peter sikkema, todd cowan - ridgetown · comparison of weed management systems in corn ii peter...

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CORN, CONVENTIONAL COMPARISON OF WEED MANAGEMENT SYSTEMS IN CORN II (CN02A1)

PETER SIKKEMA, TODD COWAN Experiment ID: CN02A1

CROP: ZEAMX, CORN, FIELD (PIONEER 37H26). Planted: May-22-02, 74000 SEEDS/HA, 5.5 CM Deep, 75 CM Row Width. Planting Method: PRECISION PLANTER.Emerged On: May-31-02.FIELD Site. Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 44 M. Expt. Location: HRS - Range S10.

Site Description: %OM: 3.8 %Sand: 32 %Silt: 38 %Clay: 30 pH: 8 CEC: 26.

APPLICATION DESCRIPTION STAGE AT APPLICATIONApplication: A B C D Application: A B C DDate : May-21-02 May-27-02 Jun-04-02 Jun-18-02 Crop 1 ZEAMX . . 2 LEAF 5 LEAFTime of Day: 9:30 PM 7:08 AM 9:40 PM 8:30 AM Height : 0. . 0. . 8 CM 23.4 CMMethod : CO2 SPRAY CO2 SPRAY CO2 SPRAY C02 SPRAYTiming : PPI PRE POST POST 2 Weed 1 CHEAL . . 3 LEAF 6 LEAFPlacement : SOIL SOIL FOLIAR FOLIAR Stg.Scale: . . 1 CM 2.5 CMAir Temp. : 7.7 C 12 C 14.9 C 24.7 C Density : . . . . 9 M2 13 M2% Humidity : 52 56 83 52 Weed 2 SINAR . . 2 LEAF 5 LEAFWind Speed : 0 KM/H 3.0 KM/H 0 KM/H 0 KM/H Stg.Scale: . . 0.5 CM 5 CMDew Present: N N Y Y Density : . . . . 1 M2 2 M2Soil Moist.: SF-D SB-M SF-D SB-M SF-W SB-W SB-M SF-D Weed 3 AMARE . . 2 LEAF 5 LEAFCloud Cover: 0% 0% 40% 10% Stg.Scale: . . 0.5 CM 2.6 CMEquipment : CO2 SPRAY CO2 SPRAY CO2 SPRAY CO2 SPRAY Density : . . . . 6 M2 8 M2Pressure : 241 KPA 241 KPA 241 KPA 241 KPA Weed 4 POLLA . . . 4 LEAFNozzle Type: FLAT FAN FLAT FAN FLAT FAN FLAT FAN Stg.Scale: . . . 3.4 CMNozzle Size: 8002 VS 8002 VS 8002 VS 8002 VS Density : . . . . . . 13 M2Noz.Spacing: 50 CM 50 CM 50 CM 50 CM Weed 5 AMBEL . . 3 LEAF 4 LEAFBoom Length: 2 M 2 M 2 M 2 M Stg.Scale: . . 1 CM 2.3 CMBoom Height: 50 CM 50 CM 50 CM 50 CM Density : . . . . 2 M2 4 M2Carrier : WATER WATER WATER WATER Weed 6 POLCO . . 2 LEAF 5 LEAFAppl.Volume: 200 L/HA 200 L/HA 200 L/HA 200 L/HA Stg.Scale: . . 1.2 CM 6.4 CMPropellant : CO2 CO2 CO2 CO2 Density : . . . . 4 M2 5 M2 Weed 7 CAPBP . . . . Stg.Scale: . . . . Density : . . . . . . . . Weed 8 SETVI . . . 4 LEAF Stg.Scale: . . . 3.2 CM Density : . . . . . . 8 M2

Weed Code CHEAL SINAR AMARECrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type VIS. INJURY VIS. INJURY VIS. INJURY CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Jun-12-02 Jun-17-02 Jul-08-02 Jul-04-02 Jul-04-02 Jul-04-02Crop Stage 4 LEAF 6 LEAF 10 LEAF 11 LEAF 11 LEAF 11 LEAFCrop Stage Scale 18 CM 25.3 CM 123.8 CM 105.8 CM 105.8 CM 105.8 CMWeed Stage 14 LEAF 11 LEAF 14 LEAFWeed Density, Unit 19 SQ. M 2 SQ. M 9 SQ. MTrt-Eval Interval 7 DAT 14 DAT 21 DAT 14 DAT 14 DAT 14 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 6

1 Untreated Check 0 e 0 a 0 a 0 c 0 b 0 c2 isoxaflutole 480 SC 79 G A/HA pre B 0 e 0 a 0 a 94 a 100 a 100 a

atrazine 480 SC 800 G A/HA pre B3 isoxaflutole 480 SC 105 G A/HA pre B 0 e 0 a 0 a 100 a 100 a 100 a

atrazine 480 SC 1063 G A/HA pre B4 s-metolachlor/benoxacor 915 EC 1600 G A/HA ppi A 0 e 0 a 0 a 100 a 100 a 100 a

prosulfuron 75 DF 10 G A/HA post 2 Ddicamba 480 SL 140 G A/HA post 2 DAgral 90 SO 0.200 % V/V post 2 D

5 dimethenamid 900 EC 1125 G A/HA post 1 C 0 e 0 a 0 a 100 a 100 a 100 adicamba/atrazine 401 SC 1600 G A/HA post 1 C

6 glufosinate 200 SL 400 G A/HA post 2 D 0 e 0 a 0 a 85 b 100 a 83 bammonium sulfate SO 6.00 L/HA post 2 D

7 glufosinate 200 SL 400 G A/HA post 2 D 0 e 0 a 0 a 100 a 100 a 100 aatrazine 480 SC 840 G A/HA post 2 D

8 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post 2 D 3 b 0 a 0 a 99 a 100 a 100 abromoxynil 280 EC 140 G A/HA post 2 Datrazine 480 SC 500 G A/HA post 2 DAgral 90 SO 0.200 % V/V post 2 D

9 nicosulfuron 75 DF 25 G A/HA post 2 D 5 a 0 a 0 a 100 a 100 a 100 abromoxynil 280 EC 280 G A/HA post 2 DAgral 90 SO 0.200 % V/V post 2 D

10 AE F130360 70 WG 70 G A/HA post 2 D 2 b 0 a 0 a 96 a 100 a 96 aMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

11 AE F130360 70 WG 70 G A/HA post 2 D 2 bc 0 a 0 a 99 a 100 a 100 adicamba 480 SL 140 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

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COMPARISON OF WEED MANAGEMENT SYSTEMS IN CORN II


Weed Code CHEAL SINAR AMARECrop Code ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type VIS. INJURY VIS. INJURY VIS. INJURY CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Jun-12-02 Jun-17-02 Jul-08-02 Jul-04-02 Jul-04-02 Jul-04-02Crop Stage 4 LEAF 6 LEAF 10 LEAF 11 LEAFCrop Stage Scale 18 CM 25.3 CM 123.8 CM 105.8 CMWeed Stage 14 LEAF 11 LEAF 14 LEAFWeed Density, Unit 19 SQ. M 2 SQ. M 9 SQ. MTrt-Eval Interval 7 DAT 14 DAT 21 DAT 14 DAT 14 DAT 14 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 6

12 AE F130360 70 WG 70 G A/HA post 2 D 5 a 0 a 0 a 100 a 100 a 100 abromoxynil 280 EC 140 G A/HA post 2 Datrazine 480 SC 500 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

13 AE F130360 70 WG 70 G A/HA post 2 D 3 b 0 a 0 a 100 a 100 a 100 aprosulfuron 75 DF 10 G A/HA post 2 Ddicamba 480 SL 140 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

14 AE F130360 70 WG 70 G A/HA post 2 D 2 b 0 a 0 a 100 a 100 a 100 adicamba/atrazine 401 SC 1000 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

15 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post 2 D 0 e 0 a 0 a 95 a 100 a 99 aAgral 90 SO 0.200 % V/V post 2 D

16 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post 2 D 1 cd 0 a 0 a 96 a 100 a 99 aflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA post 2 DAgral 90 SO 0.250 % V/V post 2 D

17 nicosulfuron 75 DF 25 G A/HA post 2 D 1 de 0 a 0 a 100 a 100 a 100 aprosulfuron 75 DF 10 G A/HA post 2 Ddicamba 480 SL 140 G A/HA post 2 DAgral 90 SO 0.200 % V/V post 2 D

LSD (P=.05) 0.9 0.0 0.0 6.8 0.0 5.6Standard Deviation 0.6 0.0 0.0 4.8 0.0 3.9CV 50.34 0.0 0.0 5.18 0.0 4.24

Means followed by same letter do not significantly differ (P=.05, LSD)

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Weed Code POLLA AMBEL POLCO CAPBP SETVI CHEALCrop Code ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Jul-04-02 Jul-04-02 Jul-04-02 Jul-04-02 Jul-04-02 Aug-12-02Crop Stage 15 LEAFCrop Stage Scale 210.8 CMWeed Stage 11 LEAF 12 LEAF 17 LEAF 9 LEAF 13 LEAF 20 LEAFWeed Density, Unit 11 SQ. M 5 SQ. M 4 SQ. M 12 SQ. M 7 SQ. M 36 SQ.MTrt-Eval Interval 14 DAT 14 DAT 14 DAT 14 DAT 14 DAT 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 7 8 9 10 11 12

1 Untreated Check 0 e 0 d 0 c 0 b 0 c 0 d2 isoxaflutole 480 SC 79 G A/HA pre B 100 a 100 a 98 a 100 a 100 a 100 a

atrazine 480 SC 800 G A/HA pre B3 isoxaflutole 480 SC 105 G A/HA pre B 100 a 100 a 99 a 100 a 100 a 100 a

atrazine 480 SC 1063 G A/HA pre B4 s-metolachlor/benoxacor 915 EC 1600 G A/HA ppi A 100 a 100 a 99 a 100 a 100 a 100 a


5 dimethenamid 900 EC 1125 G A/HA post 1 C 100 a 100 a 100 a 100 a 100 a 100 adicamba/atrazine 401 SC 1600 G A/HA post 1 C

6 glufosinate 200 SL 400 G A/HA post 2 D 86 cd 100 a 98 a 100 a 100 a 93 bammonium sulfate SO 6.00 L/HA post 2 D

7 glufosinate 200 SL 400 G A/HA post 2 D 100 a 100 a 100 a 100 a 100 a 100 aatrazine 480 SC 840 G A/HA post 2 D

8 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post 2 D 100 a 100 a 100 a 100 a 100 a 100 abromoxynil 280 EC 140 G A/HA post 2 Datrazine 480 SC 500 G A/HA post 2 DAgral 90 SO 0.200 % V/V post 2 D

9 nicosulfuron 75 DF 25 G A/HA post 2 D 98 ab 100 a 99 a 100 a 100 ab 98 abromoxynil 280 EC 280 G A/HA post 2 DAgral 90 SO 0.200 % V/V post 2 D

10 AE F130360 70 WG 70 G A/HA post 2 D 79 d 75 b 0 c 100 a 100 a 97 aMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

11 AE F130360 70 WG 70 G A/HA post 2 D 94 abc 100 a 100 a 100 a 100 a 100 adicamba 480 SL 140 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

12 AE F130360 70 WG 70 G A/HA post 2 D 100 a 100 a 100 a 100 a 100 ab 100 abromoxynil 280 EC 140 G A/HA post 2 Datrazine 480 SC 500 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

13 AE F130360 70 WG 70 G A/HA post 2 D 100 a 100 a 100 a 100 a 99 b 100 aprosulfuron 75 DF 10 G A/HA post 2 Ddicamba 480 SL 140 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

14 AE F130360 70 WG 70 G A/HA post 2 D 100 a 98 a 100 a 100 a 100 a 100 adicamba/atrazine 401 SC 1000 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

15 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post 2 D 85 cd 59 c 93 b 100 a 100 a 78 cAgral 90 SO 0.200 % V/V post 2 D

16 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post 2 D 88 bcd 96 a 97 a 100 a 100 a 100 aflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA post 2 DAgral 90 SO 0.250 % V/V post 2 D

17 nicosulfuron 75 DF 25 G A/HA post 2 D 95 abc 100 a 100 a 100 a 99 b 100 aprosulfuron 75 DF 10 G A/HA post 2 Ddicamba 480 SL 140 G A/HA post 2 DAgral 90 SO 0.200 % V/V post 2 D



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COMPARISON OF WEED MANAGEMENT SYSTEMS IN CORN IIPETER SIKKEMA, TODD COWAN Experiment ID: CN02A1

Weed Code AMARE POLLA AMBEL POLCO CAPBP SETVIRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Aug-12-02 Aug-12-02 Aug-12-02 Aug-12-02 Aug-12-02 Aug-12-02Weed Stage 20 LEAF 13 LEAF 15 LEAF 20 LEAF 11 LEAF 15 LEAFWeed Density, Unit 14 SQ.M 6 SQ.M 7 SQ.M 5 SQ.M 3 SQ.M 5 SQ.MTrt-Eval Interval 56 DAT 56 DAT 56 DAT 56 DAT 56 DAT 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 13 14 15 16 17 18

1 Untreated Check 0 c 0 e 0 e 0 c 0 b 0 d2 isoxaflutole 480 SC 79 G A/HA pre B 100 a 100 a 100 a 93 a 100 a 100 ab

atrazine 480 SC 800 G A/HA pre B3 isoxaflutole 480 SC 105 G A/HA pre B 100 a 100 a 100 a 95 a 100 a 100 a

atrazine 480 SC 1063 G A/HA pre B4 s-metolachlor/benoxacor 915 EC 1600 G A/HA ppi A 100 a 100 a 100 a 100 a 100 a 100 a


5 dimethenamid 900 EC 1125 G A/HA post 1 C 100 a 100 a 100 a 100 a 100 a 100 adicamba/atrazine 401 SC 1600 G A/HA post 1 C

6 glufosinate 200 SL 400 G A/HA post 2 D 78 b 70 d 95 ab 84 ab 100 a 98 abcammonium sulfate SO 6.00 L/HA post 2 D

7 glufosinate 200 SL 400 G A/HA post 2 D 100 a 99 a 100 a 100 a 100 a 100 abatrazine 480 SC 840 G A/HA post 2 D

8 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post 2 D 100 a 100 a 100 a 100 a 100 a 98 abcbromoxynil 280 EC 140 G A/HA post 2 Datrazine 480 SC 500 G A/HA post 2 DAgral 90 SO 0.200 % V/V post 2 D

9 nicosulfuron 75 DF 25 G A/HA post 2 D 100 a 93 abc 100 a 95 a 100 a 97 abcbromoxynil 280 EC 280 G A/HA post 2 DAgral 90 SO 0.200 % V/V post 2 D

10 AE F130360 70 WG 70 G A/HA post 2 D 99 a 81 bcd 88 c 0 c 100 a 99 abMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

11 AE F130360 70 WG 70 G A/HA post 2 D 99 a 91 abc 100 a 95 a 100 a 99 abcdicamba 480 SL 140 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

12 AE F130360 70 WG 70 G A/HA post 2 D 100 a 100 a 100 a 99 a 100 a 96 cbromoxynil 280 EC 140 G A/HA post 2 Datrazine 480 SC 500 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

13 AE F130360 70 WG 70 G A/HA post 2 D 100 a 97 a 100 a 97 a 100 a 98 abcprosulfuron 75 DF 10 G A/HA post 2 Ddicamba 480 SL 140 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

14 AE F130360 70 WG 70 G A/HA post 2 D 100 a 100 a 100 a 100 a 100 a 98 abcdicamba/atrazine 401 SC 1000 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

15 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post 2 D 100 a 79 cd 69 d 70 b 100 a 99 abAgral 90 SO 0.200 % V/V post 2 D

16 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post 2 D 100 a 92 abc 93 bc 96 a 100 a 99 abcflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA post 2 DAgral 90 SO 0.250 % V/V post 2 D

17 nicosulfuron 75 DF 25 G A/HA post 2 D 100 a 94 ab 99 ab 95 a 100 a 96 bcprosulfuron 75 DF 10 G A/HA post 2 Ddicamba 480 SL 140 G A/HA post 2 DAgral 90 SO 0.200 % V/V post 2 D



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Weed CodeCrop Code ZEAMX ZEAMX ZEAMXRating Data Type MOISTURE YIELD YIELDRating Unit % H20 T/HA BU/ACRating Date Oct-09-02 Oct-09-02 Oct-09-02Trt-Eval Interval 131 DAE 131 DAE 131 DAETrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 19 21 22

1 Untreated Check 20.8 ab 5.9 d 93.9 d2 isoxaflutole 480 SC 79 G A/HA pre B 20.9 ab 7.1 c 112.9 c

atrazine 480 SC 800 G A/HA pre B3 isoxaflutole 480 SC 105 G A/HA pre B 22.1 a 8.0 bc 126.8 bc

atrazine 480 SC 1063 G A/HA pre B4 s-metolachlor/benoxacor 915 EC 1600 G A/HA ppi A 22.3 a 8.2 ab 130.2 ab


5 dimethenamid 900 EC 1125 G A/HA post 1 C 21.7 ab 8.3 ab 132.6 abdicamba/atrazine 401 SC 1600 G A/HA post 1 C

6 glufosinate 200 SL 400 G A/HA post 2 D 21.3 ab 8.2 ab 130.7 abammonium sulfate SO 6.00 L/HA post 2 D

7 glufosinate 200 SL 400 G A/HA post 2 D 21.8 ab 9.0 a 143.3 aatrazine 480 SC 840 G A/HA post 2 D

8 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post 2 D 21.9 ab 8.6 ab 136.7 abbromoxynil 280 EC 140 G A/HA post 2 Datrazine 480 SC 500 G A/HA post 2 DAgral 90 SO 0.200 % V/V post 2 D

9 nicosulfuron 75 DF 25 G A/HA post 2 D 21.4 ab 8.2 ab 130.2 abbromoxynil 280 EC 280 G A/HA post 2 DAgral 90 SO 0.200 % V/V post 2 D

10 AE F130360 70 WG 70 G A/HA post 2 D 21.6 ab 8.3 ab 132.1 abMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

11 AE F130360 70 WG 70 G A/HA post 2 D 21.0 ab 7.9 bc 126.3 bcdicamba 480 SL 140 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

12 AE F130360 70 WG 70 G A/HA post 2 D 21.1 ab 9.0 a 143.2 abromoxynil 280 EC 140 G A/HA post 2 Datrazine 480 SC 500 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

13 AE F130360 70 WG 70 G A/HA post 2 D 21.1 ab 8.1 ab 129.8 abprosulfuron 75 DF 10 G A/HA post 2 Ddicamba 480 SL 140 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

14 AE F130360 70 WG 70 G A/HA post 2 D 21.4 ab 7.9 bc 125.1 bcdicamba/atrazine 401 SC 1000 G A/HA post 2 DMSO SO 1.75 L/HA post 2 DUAN 28 % SO 2.50 L/HA post 2 D

15 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post 2 D 20.5 b 7.7 bc 122.6 bcAgral 90 SO 0.200 % V/V post 2 D

16 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post 2 D 20.9 ab 8.2 ab 130.6 abflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA post 2 DAgral 90 SO 0.250 % V/V post 2 D

17 nicosulfuron 75 DF 25 G A/HA post 2 D 22.2 a 8.1 ab 129.0 abprosulfuron 75 DF 10 G A/HA post 2 Ddicamba 480 SL 140 G A/HA post 2 DAgral 90 SO 0.200 % V/V post 2 D

LSD (P=.05) 1.48 0.94 15.01Standard Deviation 1.04 0.66 10.50CV 4.85 8.21 8.21Means followed by same letter do not significantly differ (P=.05, LSD)

Trial Comments

There was no visual injury of commercial significance in corn with the preplant incorporated, preemergence and postemergence herbicide treatments evaluated. The preplant incorporated treatment of s-metolachlor/benoxacor followed by prosulfuron plus dicamba applied postemergence provided excellent full season control of lamb's-quarters (CHEAL), redroot pigweed (AMARE), green smartweed (POLLA), common ragweed (AMBEL), wild buckwheat (POLCO), shepherd's purse (CAPBP) and green foxtail(SETVI). The preemergence application of isoxaflutole plus atrazine (both rates) provided excellent full season control of all the weeds evaluated. The early postemergenceapplication of dimethenamid plus dicamba/atrazine provided 100 % control of all the species present in this experiment. Glufosinate alone provided excellent control of lamb's-quarters, common ragweed, shepherd's purse and green foxtail, good control of wild buckwheat and fair control of redroot pigweed and green smartweed. The tankmix of glufosinateplus atrazine provided excellent full season broadleaf and grass weed control. The tankmix of nicosulfuron/rimsulfuron plus bromoxynil plus atrazine and the tankmix of nicosulfuronplus bromoxynil provided excellent control of all the species present in this trial. AE F130360 provided excellent full season control of lamb's-quarters, redroot pigweed, shepherd'spurse and green foxtail, good control of green smartweed and common ragweed but had no activity on wild buckwheat. The tankmixes of AE F130360 plus either dicamba, bromoxynilplus atrazine, prosulfuron plus dicamba or dicamba/atrazine all provided excellent control of all the weed species in this trial. Nicosulfuron/rimsulfuron provided excellent full seasoncontrol of redroot pigweed, shepherd's purse and green foxtail, and fair control of lamb's-quarters, green smartweed, common ragweed and wild buckwheat. The tankmixes ofnicosulfuron/rimsulfuron plus flumetsulam/clopyralid/2,4-D and nicosulfuron plus prosulfuron plus dicamba both provided excellent full season control of all the weed species evaluatedin this trial. Corn yields were closely correlated with the level of weed control.

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BIOLOGICALLY EFFECTIVE DOSE OF FORAMSULFURON FOR WEED CONTROL IN CORN III (CN02C1)

PETER SIKKEMA, TODD COWAN Experiment ID: CN02C1

CROP: ZEAMX, CORN, FIELD (PIONEER 37H26). Planted: May-22-02, 74000 SEEDS/HA, 5.5 CM Deep, 75 CM Row Width. Planting Method: PRECISION PLANTER.Emerged On: May-31-02.FIELD Site. Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 44 M. Expt. Location: HRS - Range SS10.Site Description: %OM: 3.8 %Sand: 32 %Silt: 38 %Clay: 30 pH: 8 CEC: 26.

APPLICATION DESCRIPTION STAGE AT APPLICATIONApplication: A Application: ADate : Jun-13-02 Crop 1 ZEAMX 4 LEAFTime of Day: 8:20 AM Height : 17.3 CMMethod : CO2 SPRAYTiming : POST Weed 1 CHEAL 4 LEAFPlacement : FOLIAR Stg.Scale: 2 CMAir Temp. : 18.2 C Density : 18 M2% Humidity : 84 Weed 2 SINAR 4 LEAFWind Speed : 3.5 KM/H Stg.Scale: 1.5 CMDew Present: N Density : 1 M2Soil Moist.: SB-M SF-D Weed 3 AMARE 3 LEAFCloud Cover: 100% Stg.Scale: 1 CMEquipment : C02 SPRAY Density : 5 M2Pressure : 241 KPA Weed 4 POLLA 3 LEAFNozzle Type: FLAT FAN Stg.Scale: 2.9 CMNozzle Size: 8002 VS Density : 7 M2Noz.Spacing: 50 CM Weed 5 AMBEL 2 LEAFBoom Length: 2 M Stg.Scale: 1 CMBoom Height: 50 CM Density : 3 M2Carrier : WATER Weed 6 POLCO 3 LEAFAppl.Volume: 200 L/HA Stg.Scale: 4 CMPropellant : C02 Density : 2 M2 Weed 7 CAPBP Stg.Scale: Density : Weed 8 SETVI 2 LEAF Stg.Scale: 1.5 CM Density : 2 M2

Weed Code CHEAL SINAR AMARECrop Code ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type VIS. INJURY VIS. INJURY VIS. INJURY CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Jun-19-02 Jun-24-02 Jul-11-02 Jul-11-02 Jul-11-02 Jul-11-02Crop Stage 6 LEAF 7 LEAF 13 LEAF 13 LEAFCrop Stage Scale 27 CM 49.5 CM 137.8 CM 137.8 CMWeed Stage 15 LEAF 10 LEAF 13 LEAFWeed Density, Unit 21 SQ.M 1 SQ.M 10 SQ.MTrt-Eval Interval 7 DAT 14 DAT 28 DAT 28 DAT 28 DAT 28 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 6

1 Weedy check 0 a 0 c 0 a 0 d 0 c 0 d2 Weed free check 0 a 0 c 0 a 100 a 100 a 100 a3 AE F130360 70 WG 8.75 G A/HA post A 0 a 0 c 0 a 66 c 99 b 89 c

MSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

4 AE F130360 70 WG 17.5 G A/HA post A 0 a 0 c 0 a 85 b 100 a 96 bMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

5 AE F130360 70 WG 35 G A/HA post A 0 a 0 c 0 a 89 b 100 a 100 aMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

6 AE F130360 70 WG 70 G A/HA post A 0 a 0 c 0 a 97 a 100 a 100 aMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

7 AE F130360 70 WG 105 G A/HA post A 0 a 1 b 0 a 96 a 100 a 100 aMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

8 AE F130360 70 WG 140 G A/HA post A 0 a 2 a 0 a 98 a 100 a 100 aMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

9 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 0 a 0 c 0 a 100 a 100 a 100 aAgral 90 SO 0.200 % V/V post A

10 AE F130360 70 WG 70 G A/HA post A 0 a 2 a 0 a 100 a 100 a 100 aprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

11 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 0 a 0 c 0 a 100 a 100 a 100 aprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AAgral 90 SO 0.200 % V/V post A



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BIOLOGICALLY EFFECTIVE DOSE OF FORAMSULFURON FOR WEED CONTROL IN CORN III


Weed Code POLLA AMBEL POLCO CAPBP SETVI CHEAL AMARECrop Code ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % % %Rating Date Jul-11-02 Jul-11-02 Jul-11-02 Jul-11-02 Jul-11-02 Aug-21-02 Aug-21-02Crop Stage 14 LEAFCrop Stage Scale 206 CMWeed Stage 13 LEAF 9 LEAF 20 LEAF 10 LEAF 15 LEAF 18 LEAF 19 LEAFWeed Density, Unit 13 SQ.M 6 SQ.M 3 SQ.M 4 SQ.M 7 SQ.M 11 SQ.M 9 SQ.MTrt-Eval Interval 28 DAT 28 DAT 28 DAT 28 DAT 28 DAT 70 DAT 70 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 7 8 9 10 11 12 13

1 Weedy check 0 e 0 d 0 d 0 b 0 d 0 e 0 d2 Weed free check 100 a 100 a 100 a 100 a 100 a 100 a 100 a3 AE F130360 70 WG 8.75 G A/HA post A 65 d 68 c 25 cd 100 a 81 c 75 d 91 c


4 AE F130360 70 WG 17.5 G A/HA post A 74 cd 80 bc 50 bc 100 a 81 c 91 bc 94 bcMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

5 AE F130360 70 WG 35 G A/HA post A 83 bc 92 ab 25 cd 100 a 93 b 90 c 97 abMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

6 AE F130360 70 WG 70 G A/HA post A 89 ab 98 a 51 bc 100 a 99 ab 95 abc 100 aMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

7 AE F130360 70 WG 105 G A/HA post A 95 ab 99 a 63 abc 100 a 97 ab 98 a 100 aMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

8 AE F130360 70 WG 140 G A/HA post A 93 ab 100 a 40 bcd 100 a 100 a 96 ab 100 aMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

9 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 97 a 78 bc 70 ab 100 a 100 a 99 a 100 aAgral 90 SO 0.200 % V/V post A

10 AE F130360 70 WG 70 G A/HA post A 100 a 100 a 100 a 100 a 99 ab 100 a 100 aprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

11 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 98 a 100 a 100 a 100 a 100 a 100 a 100 aprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AAgral 90 SO 0.200 % V/V post A

LSD (P=.05) 12.2 17.7 42.8 0.0 6.6 6.2 4.3Standard Deviation 8.4 12.3 29.6 0.0 4.6 4.3 3.0CV 10.39 14.75 52.28 0.0 5.34 4.97 3.36Means followed by same letter do not significantly differ (P=.05, LSD)

Weed Code POLLA AMBEL POLCO CAPBP SETVI CHEALRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL #/SQ.MRating Unit % % % % %Rating Date Aug-21-02 Aug-21-02 Aug-21-02 Aug-21-02 Aug-21-02 Aug-28-02Weed Stage 19 LEAF 16 LEAF 20 LEAF 12 LEAF 16 LEAFWeed Density, Unit 15 SQ.M 4 SQ.M 2 SQ.M 3 SQ.M 5 SQ.MTrt-Eval Interval 70 DAT 70 DAT 70 DAT 70 DAT 70 DAT 76 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 14 15 16 17 18 19

1 Weedy check 0 e 0 e 0 d 0 b 0 c 23 a2 Weed free check 100 a 100 a 100 a 100 a 100 a 0 d3 AE F130360 70 WG 8.75 G A/HA post A 58 d 45 d 70 bc 100 a 78 b 20 ab


4 AE F130360 70 WG 17.5 G A/HA post A 74 cd 70 c 88 abc 100 a 88 ab 7 cdMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

5 AE F130360 70 WG 35 G A/HA post A 75 bcd 83 bc 80 abc 100 a 100 a 11 bcMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

6 AE F130360 70 WG 70 G A/HA post A 83 abc 91 ab 79 abc 100 a 96 a 2 cdMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

7 AE F130360 70 WG 105 G A/HA post A 83 abc 98 ab 90 ab 100 a 93 ab 1 dMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

8 AE F130360 70 WG 140 G A/HA post A 88 abc 98 ab 66 c 100 a 99 a 2 cdMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

9 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 90 abc 84 abc 98 a 100 a 99 a 1 dAgral 90 SO 0.200 % V/V post A

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Weed Code POLLA AMBEL POLCO CAPBP SETVI CHEALRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL #/SQ.MRating Unit % % % % %Rating Date Aug-21-02 Aug-21-02 Aug-21-02 Aug-21-02 Aug-21-02 Aug-28-02Weed Stage 19 LEAF 16 LEAF 20 LEAF 12 LEAF 16 LEAFWeed Density, Unit 15 SQ.M 4 SQ.M 2 SQ.M 3 SQ.M 5 SQ.MTrt-Eval Interval 70 DAT 70 DAT 70 DAT 70 DAT 70 DAT 76 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 14 15 16 17 18 19

10 AE F130360 70 WG 70 G A/HA post A 98 a 100 a 100 a 100 a 97 a 0 dprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

11 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 95 ab 100 a 100 a 100 a 98 a 0 dprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AAgral 90 SO 0.200 % V/V post A

LSD (P=.05) 21.0 16.9 23.5 0.0 17.3 9.8Standard Deviation 14.5 11.7 16.3 0.0 12.0 6.8CV 18.96 14.86 20.58 0.0 13.89 113.59Means followed by same letter do not significantly differ (P=.05, LSD)

Weed Code CHEAL CHEAL AMARE AMARE AMARE POLLARating Data Type FRESH WGT. DRY WGT. #/SQ.M FRESH WGT. DRY WGT. #/SQ.MRating Unit G G G GRating Date Aug-28-02 Sep-04-02 Aug-28-02 Aug-28-02 Sep-04-02 Aug-28-02Trt-Eval Interval 76 DAT 76 DAT 76 DAT 76 DAT 76 DAT 76 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 20 21 22 23 24 25

1 Weedy check 155.12 a 44.47 a 12 a 250.98 a 63.18 a 18 a2 Weed free check 0.00 c 0.00 c 0 b 0.00 b 0.00 b 0 b3 AE F130360 70 WG 8.75 G A/HA post A 39.44 b 10.19 b 5 b 7.54 b 2.20 b 3 b


4 AE F130360 70 WG 17.5 G A/HA post A 7.36 c 1.39 bc 0 b 0.47 b 0.34 b 4 bMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

5 AE F130360 70 WG 35 G A/HA post A 8.05 bc 2.24 bc 0 b 0.60 b 0.14 b 3 bMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

6 AE F130360 70 WG 70 G A/HA post A 1.83 c 0.50 c 0 b 0.53 b 0.24 b 8 bMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A



9 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 2.13 c 0.56 c 0 b 0.00 b 0.00 b 2 bAgral 90 SO 0.200 % V/V post A

10 AE F130360 70 WG 70 G A/HA post A 0.00 c 0.00 c 0 b 0.00 b 0.00 b 2 bprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

11 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 0.00 c 0.00 c 0 b 0.00 b 0.00 b 7 bprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AAgral 90 SO 0.200 % V/V post A


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Weed Code POLLA POLLA AMBEL AMBEL AMBEL POLCORating Data Type FRESH WGT. DRY WGT. #/SQ.M FRESH WGT. DRY WGT. #/SQ.MRating Unit G G G GRating Date Aug-28-02 Sep-04-02 Aug-28-02 Aug-28-02 Sep-04-02 Aug-28-02Trt-Eval Interval 76 DAT 76 DAT 76 DAT 76 DAT 76 DAT 76 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 26 27 28 29 30 311 Weedy check 177.77 a 43.26 a 3 ab 51.62 a 15.54 a 1 ab2 Weed free check 0.00 b 0.00 b 0 c 0.00 b 0.00 b 0 b3 AE F130360 70 WG 8.75 G A/HA post A 30.52 b 7.29 b 3 ab 22.26 ab 6.91 ab 1 ab


4 AE F130360 70 WG 17.5 G A/HA post A 29.18 b 7.29 b 5 a 12.53 b 3.53 b 0 bMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

5 AE F130360 70 WG 35 G A/HA post A 11.21 b 3.18 b 3 abc 4.01 b 1.31 b 0 bMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

6 AE F130360 70 WG 70 G A/HA post A 9.86 b 2.65 b 2 bc 2.37 b 0.69 b 2 aMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

7 AE F130360 70 WG 105 G A/HA post A 13.56 b 3.57 b 2 bc 2.24 b 0.72 b 0 bMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

8 AE F130360 70 WG 140 G A/HA post A 7.39 b 2.19 b 1 bc 1.11 b 0.30 b 1 abMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

9 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 3.66 b 1.00 b 2 bc 15.52 b 4.82 ab 0 bAgral 90 SO 0.200 % V/V post A

10 AE F130360 70 WG 70 G A/HA post A 2.23 b 0.61 b 0 c 0.00 b 0.00 b 0 bprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

11 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 5.84 b 2.23 b 0 c 0.00 b 0.00 b 0 bprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AAgral 90 SO 0.200 % V/V post A


Weed Code POLCO POLCO CAPBP CAPBP CAPBP SETVIRating Data Type FRESH WGT. DRY WGT. #/SQ.M FRESH WGT. DRY WGT. #/SQ.MRating Unit G G G GRating Date Aug-28-02 Sep-04-02 Aug-28-02 Aug-28-02 Sep-04-02 Aug-28-02Trt-Eval Interval 76 DAT 76 DAT 76 DAT 76 DAT 76 DAT 76 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 32 33 34 35 36 371 Weedy check 26.31 a 8.00 ab 1 a 1.49 a 0.42 a 7 a2 Weed free check 0.00 a 0.00 b 0 b 0.00 b 0.00 b 0 c3 AE F130360 70 WG 8.75 G A/HA post A 22.80 a 5.85 ab 0 b 0.00 b 0.00 b 2 bc


4 AE F130360 70 WG 17.5 G A/HA post A 1.05 a 0.35 b 0 b 0.00 b 0.00 b 6 abMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

5 AE F130360 70 WG 35 G A/HA post A 0.00 a 0.00 b 0 b 0.00 b 0.00 b 1 cMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

6 AE F130360 70 WG 70 G A/HA post A 26.20 a 9.14 a 0 b 0.00 b 0.00 b 0 cMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

7 AE F130360 70 WG 105 G A/HA post A 13.99 a 3.68 ab 0 b 0.00 b 0.00 b 1 bcMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

8 AE F130360 70 WG 140 G A/HA post A 5.15 a 1.41 ab 0 b 0.00 b 0.00 b 1 bcMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

9 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 2.86 a 1.07 ab 0 b 0.00 b 0.00 b 1 cAgral 90 SO 0.200 % V/V post A

10 AE F130360 70 WG 70 G A/HA post A 0.00 a 0.00 b 0 b 0.00 b 0.00 b 2 bcprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

11 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 0.00 a 0.00 b 0 b 0.00 b 0.00 b 1 cprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AAgral 90 SO 0.200 % V/V post A


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Weed Code SETVI SETVICrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type FRESH WGT. DRY WGT. MOISTURE YIELD YIELDRating Unit G G % H20 T/HA BU/ACRating Date Aug-28-02 Sep-04-02 Oct-09-02 Oct-09-02 Oct-09-02Trt-Eval Interval 76 DAT 76 DAT 118 DAT 118 DAT 118 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 38 39 40 42 43

1 Weedy check 93.76 a 29.28 a 23.0 a 6.5 b 103.1 b2 Weed free check 0.00 b 0.00 b 21.9 ab 8.5 a 135.9 a3 AE F130360 70 WG 8.75 G A/HA post A 3.03 b 0.88 b 22.0 ab 8.2 a 130.0 a


4 AE F130360 70 WG 17.5 G A/HA post A 4.78 b 1.36 b 22.0 ab 8.3 a 132.1 aMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

5 AE F130360 70 WG 35 G A/HA post A 2.44 b 0.69 b 21.5 ab 8.3 a 132.6 aMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

6 AE F130360 70 WG 70 G A/HA post A 0.00 b 0.00 b 22.5 a 8.7 a 138.8 aMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

7 AE F130360 70 WG 105 G A/HA post A 1.79 b 0.58 b 20.8 b 7.8 a 124.8 aMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

8 AE F130360 70 WG 140 G A/HA post A 1.37 b 0.43 b 21.6 ab 8.2 a 130.7 aMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

9 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 1.03 b 0.31 b 22.1 ab 8.7 a 137.9 aAgral 90 SO 0.200 % V/V post A

10 AE F130360 70 WG 70 G A/HA post A 1.91 b 0.51 b 21.8 ab 8.2 a 131.2 aprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

11 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 0.86 b 0.18 b 22.3 ab 7.9 a 126.0 aprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AAgral 90 SO 0.200 % V/V post A

LSD (P=.05) 41.207 12.775 1.63 0.98 15.57Standard Deviation 28.539 8.847 1.13 0.68 10.78CV 282.88 284.48 5.14 8.34 8.34


Trial Comments

There was no commercially significant visual injury in corn (ZEAMX) with the postemergence herbicide treatments evaluated.

AE F130360 was applied at 8.75, 17.5, 35, 70, 105 and 140 g/ha to determine the rate which provided commercially acceptable control of lamb's-quarters (CHEAL), wild mustard(SINAR), redroot pigweed (AMARE), green smartweed (POLLA), common ragweed (AMBEL), wild buckwheat (POLCO), shepherd's purse (CAPBP) and green foxtail (SETVI). Therate required to consistently provide greater than 90 % full season control was 17.5 g/ha for lamb's-quarters, 8.75 g/ha for redroot pigweed, greater than 140 g/ha for green smartweed,70 g/ha for common ragweed, greater than 140 g/ha for wild buckwheat, 8.75 g/ha for shepherd's purse and 35 g/ha for green foxtail.

AE F130360 (70 g/ha) and nicosulfuron/rimsulfuron (25 g/ha) provided statistically equivalent full season control of lamb's-quarters, redroot pigweed, green smartweed, commonragweed, wild buckwheat, shepherd's purse and green foxtail.

The tankmixes of either AE F130360 (70 g/ha) or nicosulfuron/rimsulfuron (25 g/ha) plus prosulfuron (10 g/ha) plus dicamba (140 g/ha) provided excellent full season control of allthe weed species evaluated.

There was no effect of the herbicide treatments evaluated on corn maturity as measure by moisture content at harvest. Corn yield with all of the herbicide treatments evaluated wasstatistically equivalent to the weed free check. There was no difference in yield among the herbicide treatments evaluated.

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COMPARISON OF BROMOXYNIL FORMULATIONS FOR BROADLEAF WEED CONTROL IN CORN III (CN02C2)


CROP: ZEAMX, CORN, FIELD (PIONEER 37H26). Planted: May-22-02, 74000 SEEDS/HA, 5.5 CM Deep, 75 CM Row Width. Planting Method: PRECISION PLANTER.Emerged On: May-31-02.FIELD Site. Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 44 M. Expt. Location: HRS - Range SS10.Site Description: %OM: 3.8 %Sand: 32 %Silt: 38 %Clay: 30 pH: 8 CEC: 26.

APPLICATION DESCRIPTION STAGE AT APPLICATIONApplication: A Application: ADate : Jun-13-02 Crop 1 ZEAMX 4 LEAFTime of Day: 9:10 AM Height : 19 CMMethod : CO2 SPRAYTiming : POST Weed 1 CHEAL 5 LEAFPlacement : FOLIAR Stg.Scale: 2.1 CMAir Temp. : 21.5 C Density : 17 M2% Humidity : 65 Weed 2 SINAR 4 LEAFWind Speed : 8.3 KM/H Stg.Scale: 1.5 CMDew Present: N Density : 4 M2Soil Moist.: SB-M SF-D Weed 3 AMARE 3 LEAFCloud Cover: 90% Stg.Scale: 1 CMEquipment : C02 SPRAY Density : 5 M2Pressure : 241 KPA Weed 4 POLLA 3 LEAFNozzle Type: FLAT FAN Stg.Scale: 3.7 CMNozzle Size: 8002 VS Density : 8 M2Noz.Spacing: 50 CM Weed 5 AMBEL 3 LEAFBoom Length: 2 M Stg.Scale: 1.8 CMBoom Height: 50 CM Density : 3 M2Carrier : WATER Weed 6 CAPBPAppl.Volume: 200 L/HA Stg.Scale:Propellant : C02 Density : Weed 7 SETVI 3 LEAF Stg.Scale: 2 CM Density : 18 M2

Weed Code CHEAL SINAR AMARE POLLA AMBELCrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type INJURY INJURY CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % % %Rating Date Jun-19-02 Jul-11-02 Jul-11-02 Jul-11-02 Jul-11-02 Jul-11-02 Jul-11-02Crop Stage 6 LEAF 14 LEAF 14 LEAF 14 LEAF 14 LEAF 14 LEAF 14 LEAFCrop Stage Scale 26 CM 142.8 CM 142.8 CM 142.8 CM 142.8 CM 142.8 CM 142.8 CMWeed Stage 11 LEAF 19 LEAF 17 LEAF 13 LEAF 13 LEAFWeed Density, Unit 23 SQ.M 1 SQ.M 6 SQ.M 15 SQ.M 4 SQ.MTrt-Eval Interval 7 DAT 28 DAT 28 DAT 28 DAT 28 DAT 28 DAT 28 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 6 7

1 Weedy check 0 d 0 a 0 c 0 b 0 b 0 c 0 b2 NAI 029 235 EC 280 G A/HA post A 0 d 0 a 100 a 100 a 100 a 100 a 100 a

dicamba 480 SL 140 G A/HA post A3 bromoxynil 280 EC 280 G A/HA post A 1 cd 0 a 98 b 100 a 100 a 100 a 100 a

dicamba 480 SL 140 G A/HA post A4 NAI 029 235 EC 280 G A/HA post A 2 ab 0 a 100 a 100 a 100 a 100 a 100 a

nicosulfuron/rimsulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

5 bromoxynil 280 EC 280 G A/HA post A 1 bc 0 a 100 a 100 a 100 a 100 a 100 anicosulfuron/rimsulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

6 NAI 029 235 EC 280 G A/HA post A 1 b 0 a 100 a 100 a 100 a 100 a 100 anicosulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

7 bromoxynil 280 EC 280 G A/HA post A 2 a 0 a 100 a 100 a 100 a 100 b 100 anicosulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

8 NAI 029 235 EC 140 G A/HA post A 1 cd 0 a 100 a 100 a 100 a 100 a 100 anicosulfuron/rimsulfuron 75 DF 25 G A/HA post Aatrazine 90 WG 500 G A/HA post AAgral 90 SO 0.200 % V/V post A

9 bromoxynil 280 EC 140 G A/HA post A 0 d 0 a 100 a 100 a 100 a 100 a 100 anicosulfuron/rimsulfuron 75 DF 25 G A/HA post Aatrazine 90 WG 500 G A/HA post AAgral 90 SO 0.200 % V/V post A

LSD (P=.05) 0.7 0.0 1.2 0.0 0.0 0.5 0.0Standard Deviation 0.5 0.0 0.9 0.0 0.0 0.3 0.0CV 60.02 0.0 0.96 0.0 0.0 0.38 0.0


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COMPARISON OF BROMOXYNIL FORMULATIONS FOR BROADLEAF WEED CONTROL IN CORN III


Weed Code CAPBP CHEAL AMARE POLLA AMBEL CAPBPCrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL MOISTURERating Unit % % % % % % % H20Rating Date Jul-11-02 Aug-06-02 Aug-06-02 Aug-06-02 Aug-06-02 Aug-06-02 Oct-09-02Crop Stage 14 LEAF 13 LEAF 13 LEAF 13 LEAF 13 LEAF 13 LEAFCrop Stage Scale 142.8 CM 197.3 CM 197.3 CM 197.3 CM 197.3 CM 197.3 CMWeed Stage 15 LEAF 18 LEAF 17 LEAF 13 LEAF 19 LEAF 12 LEAFWeed Density, Unit 4 SQ.M 20 SQ.M 12 SQ.M 22 SQ.M 3 SQ.M 2 SQ.MTrt-Eval Interval 28 DAT 56 DAT 56 DAT 56 DAT 56 DAT 56 DAT 118 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 8 9 10 11 12 13 14

1 Weedy check 0 b 0 c 0 c 0 c 0 b 0 b 23.0 a2 NAI 029 235 EC 280 G A/HA post A 100 a 99 b 100 a 100 a 100 a 100 a 22.7 ab

dicamba 480 SL 140 G A/HA post A3 bromoxynil 280 EC 280 G A/HA post A 100 a 99 ab 100 b 100 ab 100 a 100 a 21.8 b

dicamba 480 SL 140 G A/HA post A4 NAI 029 235 EC 280 G A/HA post A 100 a 100 a 100 a 100 a 100 a 100 a 22.1 ab


5 bromoxynil 280 EC 280 G A/HA post A 100 a 100 a 100 a 100 a 100 a 100 a 22.4 abnicosulfuron/rimsulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

6 NAI 029 235 EC 280 G A/HA post A 100 a 100 ab 100 a 99 b 100 a 100 a 22.3 abnicosulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

7 bromoxynil 280 EC 280 G A/HA post A 100 a 99 b 100 a 100 a 100 a 100 a 21.6 bnicosulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

8 NAI 029 235 EC 140 G A/HA post A 100 a 100 a 100 a 100 a 100 a 100 a 22.7 abnicosulfuron/rimsulfuron 75 DF 25 G A/HA post Aatrazine 90 WG 500 G A/HA post AAgral 90 SO 0.200 % V/V post A

9 bromoxynil 280 EC 140 G A/HA post A 100 a 100 a 100 a 100 a 100 a 100 a 22.1 abnicosulfuron/rimsulfuron 75 DF 25 G A/HA post Aatrazine 90 WG 500 G A/HA post AAgral 90 SO 0.200 % V/V post A



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COMPARISON OF BROMOXYNIL FORMULATIONS FOR BROADLEAF WEED CONTROL IN CORN III


Weed CodeCrop Code ZEAMX ZEAMXRating Data Type YIELD YIELDRating Unit T/HA BU/ACRating Date Oct-09-02 Oct-09-02Trt-Eval Interval 118 DAT 118 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 16 17

1 Weedy check 5.8 d 93.0 d2 NAI 029 235 EC 280 G A/HA post A 9.0 a 144.1 a

dicamba 480 SL 140 G A/HA post A3 bromoxynil 280 EC 280 G A/HA post A 7.4 c 118.2 c

dicamba 480 SL 140 G A/HA post A4 NAI 029 235 EC 280 G A/HA post A 8.6 ab 137.3 ab


5 bromoxynil 280 EC 280 G A/HA post A 8.0 bc 126.8 bcnicosulfuron/rimsulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

6 NAI 029 235 EC 280 G A/HA post A 7.9 bc 126.6 bcnicosulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

7 bromoxynil 280 EC 280 G A/HA post A 8.3 abc 132.2 abcnicosulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

8 NAI 029 235 EC 140 G A/HA post A 8.2 abc 130.1 abcnicosulfuron/rimsulfuron 75 DF 25 G A/HA post Aatrazine 90 WG 500 G A/HA post AAgral 90 SO 0.200 % V/V post A

9 bromoxynil 280 EC 140 G A/HA post A 7.7 c 122.1 cnicosulfuron/rimsulfuron 75 DF 25 G A/HA post Aatrazine 90 WG 500 G A/HA post AAgral 90 SO 0.200 % V/V post A

LSD (P=.05) 0.88 14.07Standard Deviation 0.60 9.60CV 7.64 7.64


Trial Comments

There was no commercially significant visual injury in corn (ZEAMX) with the postemergence herbicide tankmixes evaluated.

The two formulations of bromoxynil (NAI 029 and Pardner) applied postemergence at 280 g/ha provided equivalent broadleaf weed control [lamb's-quarters (CHEAL), wild mustard(SINAR), redroot pigweed (AMARE), green smartweed (POLLA), common ragweed (AMBEL) and shepherd's purse (CAPBP)] when tankmixed with either dicamba (140 g/ha),nicosulfuron/rimsulfuron (25 g/ha), nicosulfuron (25 g/ha) or nicosulfuron/rimsulfuron (25 g/ha) plus atrazine (500 g/ha).

There was no effect of the herbicide treatments evaluated on maturity as measured by moisture content at harvest. The use of the two formulations of bromoxynil for weedmanagement in corn resulted in equivalent corn yield. (There was a statistically significant difference with the one tankmix evaluated, but this is considered to be due to experimentalvariation and not a true treatment effect)

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THE EFFECT OF FOLIAR FERTILIZERS ON HERBICIDE PERFORMANCE IN CORN II (CN02C3)


CROP: ZEAMX, CORN, FIELD (DRC 42-71 RR). Planted: May-22-02, 74000 S/H, 5.5 CM Deep, 75 CM Row Width. Planting Method: PRECISION PLANTER.Emerged On: May-31-02.FIELD Site. Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 44 M. Expt. Location: HRS - Range SS11.

Site Description: %OM: 4 %Sand: 38 %Silt: 31 %Clay: 31 pH: 8.1 CEC: 28.

APPLICATION DESCRIPTION STAGE AT APPLICATIONApplication: A Application: ADate : Jun-17-02 Crop 1 ZEAMX 6 LEAFTime of Day: 8:15 PM Height : 24.5 CMMethod : CO2 SPRAYTiming : POST Weed 1 CHEAL 6 LEAFPlacement : FOLIAR Stg.Scale: 3 CMAir Temp. : 19.2 C Density : 57 M2% Humidity : 63 Weed 2 SINAR 5 LEAFWind Speed : 0 KM/H Stg.Scale: 11 CMDew Present: N Density : 82 M2Soil Moist.: SB-M SF-W Weed 3 AMARE 3 LEAFCloud Cover: 65% Stg.Scale: 2 CMEquipment : CO2 SPRAY Density : 26 M2Pressure : 241 KPA Weed 4 POLLA 3 LEAFNozzle Type: FLAT FAN Stg.Scale: 5 CMNozzle Size: 8002 VS Density : 4 M2Noz.Spacing: 50 CM Weed 5 AMBEL 7 LEAFBoom Length: 2 M Stg.Scale: 5 CMBoom Height: 50 CM Density : 1 M2Carrier : WATER Weed 6 POLCOAppl.Volume: 200 L/HA Stg.Scale:Propellant : CO2 Density : Weed 7 CAPBP Stg.Scale: Density : Weed 8 SETVI 4 LEAF Stg.Scale: 7 CM Density : 14 M2

Weed Code CHEAL SINAR AMARE AMBELCrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type VIS. INJURY VIS. INJURY CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Jun-24-02 Jul-18-02 Jul-18-02 Jul-18-02 Jul-18-02 Jul-18-02Crop Stage 7 LEAF 9 LEAF 9 LEAF 9 LEAF 9 LEAF 9 LEAFCrop Stage Scale 46.3 CM 126 CM 126 CM 126 CM 126 CM 126 CMWeed Stage 17 LEAF 9 LEAF 12 LEAF 15 LEAFWeed Density, Unit 69 SQ. M 58 SQ. M 37 SQ. M 1 SQ. MTrt-Eval Interval 7 DAT 28 DAT 28 DAT 28 DAT 28 DAT 28 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 6

1 Untreated Check 0 b 0 a 0 c 0 b 0 c 0 c2 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 0 a 0 a 100 a 100 a 100 a 100 a

flumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA post AAgral 90 SO 0.250 % V/V post A

3 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 0 b 0 a 99 ab 100 a 100 a 100 aflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA post ACrop Booster SO 2.000 L/HA post AAgral 90 SO 0.250 % V/V post A

4 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 0 b 0 a 100 ab 100 a 100 a 100 aflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA post A0S01 - C SO 2.000 L/HA post AAgral 90 SO 0.250 % V/V post A

5 nicosulfuron 75 DF 25 G A/HA post A 0 b 0 a 100 ab 100 a 100 b 99 bprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AAgral 90 SO 0.200 % V/V post A

6 nicosulfuron 75 DF 25 G A/HA post A 0 b 0 a 99 ab 100 a 100 a 100 aprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post ACrop Booster SO 2.000 L/HA post AAgral 90 SO 0.200 % V/V post A

7 nicosulfuron 75 DF 25 G A/HA post A 0 b 0 a 100 a 100 a 100 a 100 aprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post A0S01 - C SO 2.000 L/HA post AAgral 90 SO 0.250 % V/V post A

8 nicosulfuron 75 DF 25 G A/HA post A 0 b 0 a 97 b 100 a 100 a 100 adicamba/diflufenzopyr 70 WG 200 G A/HA post AAgral 90 SO 0.250 % V/V post AUAN 28 % SO 1.25 % V/V post A

-131-

THE EFFECT OF FOLIAR FERTILIZERS ON HERBICIDE PERFORMANCE IN CORN II


Weed Code CHEAL SINAR AMARE AMBELCrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type VIS. INJURY VIS. INJURY CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Jun-24-02 Jul-18-02 Jul-18-02 Jul-18-02 Jul-18-02 Jul-18-02Crop Stage 7 LEAF 9 LEAF 9 LEAF 9 LEAF 9 LEAF 9 LEAFCrop Stage Scale 46.3 CM 126 CM 126 CM 126 CM 126 CM 126 CMWeed Stage 17 LEAF 9 LEAF 12 LEAF 15 LEAFWeed Density, Unit 69 SQ. M 58 SQ. M 37 SQ. M 1 SQ. MTrt-Eval Interval 7 DAT 28 DAT 28 DAT 28 DAT 28 DAT 28 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 6

9 nicosulfuron 75 DF 25 G A/HA post A 0 b 0 a 100 ab 100 a 100 a 100 adicamba/diflufenzopyr 70 WG 200 G A/HA post ACrop Booster SO 2.000 L/HA post AAgral 90 SO 0.250 % V/V post A

10 nicosulfuron 75 DF 25 G A/HA post A 0 b 0 a 99 ab 100 a 100 ab 100 adicamba/diflufenzopyr 70 WG 200 G A/HA post A0S01 - C SO 2.000 L/HA post AAgral 90 SO 0.250 % V/V post A


Weed Code CAPBP SETVI CHEAL SINAR AMARE POLCOCrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Jul-18-02 Jul-18-02 Aug-12-02 Aug-12-02 Aug-12-02 Aug-12-02Crop Stage 9 LEAF 9 LEAF 13 LEAF 13 LEAF 13 LEAF 13 LEAFCrop Stage Scale 126 CM 126 CM 203.5 CM 203.5 CM 203.5 CM 203.5 CMWeed Stage 7 LEAF 7 LEAF 19 LEAF 8 LEAF 19 LEAF 20 LEAFWeed Density, Unit 4 SQ. M 58 SQ. M 30 SQ.M 19 SQ.M 27 SQ.M 2 SQ.MTrt-Eval Interval 28 DAT 28 DAT 56 DAT 56 DAT 56 DAT 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 7 8 9 10 11 12

1 Untreated Check 0 b 0 e 0 c 0 b 0 b 0 c2 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 100 a 94 bcd 100 a 100 a 100 a 100 a


3 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 100 a 93 bcd 100 a 100 a 100 a 100 aflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA post ACrop Booster SO 2.000 L/HA post AAgral 90 SO 0.250 % V/V post A

4 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 100 a 95 abc 99 b 100 a 100 a 98 bflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA post A0S01 - C SO 2.000 L/HA post AAgral 90 SO 0.250 % V/V post A

5 nicosulfuron 75 DF 25 G A/HA post A 100 a 92 d 100 ab 100 a 100 a 100 aprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AAgral 90 SO 0.200 % V/V post A

6 nicosulfuron 75 DF 25 G A/HA post A 100 a 93 cd 100 ab 100 a 100 a 100 aprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post ACrop Booster SO 2.000 L/HA post AAgral 90 SO 0.200 % V/V post A

7 nicosulfuron 75 DF 25 G A/HA post A 100 a 97 a 100 a 100 a 100 a 100 aprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post A0S01 - C SO 2.000 L/HA post AAgral 90 SO 0.250 % V/V post A

8 nicosulfuron 75 DF 25 G A/HA post A 100 a 95 a-d 99 ab 100 a 100 a 100 adicamba/diflufenzopyr 70 WG 200 G A/HA post AAgral 90 SO 0.250 % V/V post AUAN 28 % SO 1.25 % V/V post A

9 nicosulfuron 75 DF 25 G A/HA post A 100 a 94 a-d 100 a 100 a 100 a 100 adicamba/diflufenzopyr 70 WG 200 G A/HA post ACrop Booster SO 2.000 L/HA post AAgral 90 SO 0.250 % V/V post A

10 nicosulfuron 75 DF 25 G A/HA post A 100 a 96 ab 100 a 100 a 100 a 100 adicamba/diflufenzopyr 70 WG 200 G A/HA post A0S01 - C SO 2.000 L/HA post AAgral 90 SO 0.250 % V/V post A


-132-

THE EFFECT OF FOLIAR FERTILIZERS ON HERBICIDE PERFORMANCE IN CORN II


Weed Code CAPBP SETVICrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type CONTROL CONTROL MOISTURE YIELD YIELDRating Unit % % % T/HA BU/ACRating Date Aug-12-02 Aug-12-02 Oct-01-02 Oct-01-02 Oct-01-02Crop Stage 13 LEAF 13 LEAFCrop Stage Scale 203.5 CM 203.5 CMWeed Stage 13 LEAF 7 LEAFWeed Density, Unit 1 SQ.M 92 SQ.MTrt-Eval Interval 56 DAT 56 DAT 106 DAT 106 DAT 106 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 13 14 15 17 18

1 Untreated Check 0 b 0 c 25.2 a 4.2 c 66.4 c2 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 100 a 90 ab 23.3 b 7.7 ab 122.2 ab


3 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 100 a 89 ab 23.6 b 7.6 ab 120.4 abflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA post ACrop Booster SO 2.000 L/HA post AAgral 90 SO 0.250 % V/V post A

4 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 100 a 94 a 23.8 b 7.3 b 116.3 bflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA post A0S01 - C SO 2.000 L/HA post AAgral 90 SO 0.250 % V/V post A

5 nicosulfuron 75 DF 25 G A/HA post A 100 a 88 b 23.4 b 7.6 ab 121.6 abprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post AAgral 90 SO 0.200 % V/V post A

6 nicosulfuron 75 DF 25 G A/HA post A 100 a 90 ab 24.0 b 7.5 ab 120.0 abprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post ACrop Booster SO 2.000 L/HA post AAgral 90 SO 0.200 % V/V post A

7 nicosulfuron 75 DF 25 G A/HA post A 100 a 92 ab 23.5 b 7.8 ab 125.0 abprosulfuron 75 DF 10 G A/HA post Adicamba 480 SL 140 G A/HA post A0S01 - C SO 2.000 L/HA post AAgral 90 SO 0.250 % V/V post A

8 nicosulfuron 75 DF 25 G A/HA post A 100 a 88 b 23.4 b 8.1 ab 128.3 abdicamba/diflufenzopyr 70 WG 200 G A/HA post AAgral 90 SO 0.250 % V/V post AUAN 28 % SO 1.25 % V/V post A

9 nicosulfuron 75 DF 25 G A/HA post A 100 a 88 b 24.3 ab 8.5 a 136.0 adicamba/diflufenzopyr 70 WG 200 G A/HA post ACrop Booster SO 2.000 L/HA post AAgral 90 SO 0.250 % V/V post A

10 nicosulfuron 75 DF 25 G A/HA post A 100 a 92 ab 23.8 b 8.5 a 135.7 adicamba/diflufenzopyr 70 WG 200 G A/HA post A0S01 - C SO 2.000 L/HA post AAgral 90 SO 0.250 % V/V post A

LSD (P=.05) 0.0 5.4 0.96 1.07 17.11Standard Deviation 0.0 3.7 0.66 0.74 11.79CV 0.0 4.63 2.79 9.89 9.89


Trial Comments

There was no visual injury in corn (ZEAMX) with the postemergence herbicide tankmixes evaluated.

There was no appreciable difference (less than 5% difference) in the control of lamb's-quarters (CHEAL), wild mustard (SINAR), redroot pigweed (AMARE), wild buckwheat (POLCO),shepherd's purse (CAPBP) and green foxtail (SETVI) among the adjuvants evaluated (Agral 90, Crop Booster plus Agral 90 and OS01-C plus Agral 90).

All of the herbicide tankmixes evaluated provided excellent full season control of all the weed species evaluated.

The adjuvants evaluated did not have an effect on the maturity of the corn as indicated by the moisture content at harvest.

The adjuvants evaluated did not have any effect on corn yield.

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EVALUATION OF MESOTRIONE APPLIED POSTEMERGENCE IN CORN II (CN02C4)


CROP: ZEAMX, CORN, FIELD (PIONEER 37H26). Planted: May-22-02, 74000 SEEDS/HA, 5.5 CM Deep, 75 CM Row Width. Planting Method: PRECISION PLANTER. Emerged On: May-31-02.FIELD Site. Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 44 M. Expt. Location: HRS - Range SS10.

Site Description: %OM: 3.8 %Sand: 32 %Silt: 38 %Clay: 30 pH: 8 CEC: 26.

APPLICATION DESCRIPTION STAGE AT APPLICATIONApplication: A B Application: A BDate : Jun-18-02 Jun-24-02 Crop 1 ZEAMX 6 LEAF 8 LEAFTime of Day: 9:55 AM 9:15 PM Height : 24.8 CM 51.5 CMMethod : CO2 SPRAY CO2 SPRAYTiming : POST 1 POST 2 Weed 1 CHEAL 6 LEAF 8 LEAFPlacement : FOLIAR FOLIAR Stg.Scale: 4.4 CM 6 CMAir Temp. : 27 C 22.5 C Density : 12 M2 23 M2% Humidity : 33 89 Weed 2 SINAR 5 LEAFWind Speed : 3.2 KPH Stg.Scale: 4.5 CMDew Present: Y N Density : 1 M2Soil Moist.: SB-M SF-M SB-M SF-D Weed 3 AMARE 4 LEAF 8 LEAFCloud Cover: 50% 50% Stg.Scale: 1 CM 6.5 CMEquipment : C02 SPRAY C02 SPRAY Density : 5 M2 7 M2Pressure : 241 KPA 241 KPA Weed 4 POLLA 5 LEAF 7 LEAFNozzle Type: FLAT FAN FLAT FAN Stg.Scale: 4.3 CM 10 CMNozzle Size: 8002 VS 8002 VS Density : 12 M2 11 M2Noz.Spacing: 50 CM 50 CM Weed 5 AMBEL 5 LEAF 7 LEAFBoom Length: 2 M 2 M Stg.Scale: 3.5 CM 5.5 CMBoom Height: 50 CM 50 CM Density : 3 M2 7 M2Carrier : WATER WATER Weed 6 POLCO 3 LEAFAppl.Volume: 200 L/HA 200 L/HA Stg.Scale: 4 CMPropellant : CO2 CO2 Density : 4 M2 Weed 7 CAPBP 4 LEAF 6 LEAF Stg.Scale: 1 CM 2 CM Density : 11 M2 6 M2 Weed 8 SETVI 3 LEAF 7 LEAF Stg.Scale: 3.5 CM 6 CM Density : 19 M2 28 M2

Weed Code CHEAL SINAR AMARECrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type VIS. INJURY VIS. INJURY INJURY CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Jul-03-02 Jul-18-02 Aug-13-02 Jul-18-02 Jul-18-02 Jul-18-02Crop Stage 11 LEAF 12 LEAF 13 LEAF 12 LEAF 12 LEAF 12 LEAFCrop Stage Scale 106 CM 161 CM 223.8 CM 161 CM 161 CM 161 CMWeed Stage 19 LEAF 12 LEAF 20 LEAFWeed Density, Unit 24 SQ. M 1 SQ. M 7 SQ. MTrt-Eval Interval 7 DAT 28 DAT 49 DAT 28 DAT 28 DAT 28 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 6

1 Untreated Check 0 a 0 a 0 a 0 c 0 b 0 c2 mesotrione 480 SC 100 G A/HA Post 1 A 0 a 0 a 0 a 99 a 100 a 100 a

nicosulfuron/rimsulfuron 75 DF 25 G A/HA Post 1 AAgral 90 SO 0.200 % V/V Post 1 A

3 mesotrione 480 SC 100 G A/HA Post 1 A 0 a 0 a 0 a 100 a 100 a 100 anicosulfuron/rimsulfuron 75 DF 25 G A/HA Post 1 Aatrazine 90 WG 280 G A/HA post 1 AAgral 90 SO 0.200 % V/V Post 1 A

4 nicosulfuron/rimsulfuron 75 DF 25 G A/HA Post 1 A 0 a 0 a 0 a 100 a 100 a 100 aflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA Post 1 AAgral 90 SO 0.250 % V/V Post 1 A

5 mesotrione 480 SC 100 G A/HA Post 2 B 0 a 0 a 0 a 100 a 98 a 90 bnicosulfuron 75 DF 25 G A/HA Post 2 BAgral 90 SO 0.200 % V/V Post 2 B

6 mesotrione 480 SC 140 G A/HA Post 2 B 0 a 0 a 0 a 100 a 100 a 100 anicosulfuron 75 DF 25 G A/HA Post 2 Batrazine 90 WG 280 G A/HA Post 2 BAgral 90 SO 0.200 % V/V Post 2 B

7 nicosulfuron 75 DF 25 G A/HA Post 2 B 0 a 0 a 0 a 93 b 99 a 96 abprosulfuron 75 WG 10 G A/HA Post 2 Bdicamba 480 SL 140 G A/HA Post 2 BAgral 90 SO 0.200 % V/V Post 2 B



-134-

EVALUATION OF MESOTRIONE APPLIED POSTEMERGENCE IN CORN II


Weed Code POLLA AMBEL CAPBP SETVI CHEAL AMARECrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Jul-18-02 Jul-18-02 Jul-18-02 Jul-18-02 Aug-13-02 Aug-13-02Crop Stage 12 LEAF 12 LEAF 12 LEAF 12 LEAF 13 LEAF 13 LEAFCrop Stage Scale 161 CM 161 CM 161 CM 161 CM 223.8 CM 223.8 CMWeed Stage 11 LEAF 14 LEAF 10 LEAF 11 LEAF 18 LEAF 18 LEAFWeed Density, Unit 9 SQ. M 5 SQ. M 3 SQ. M 21 SQ. M 31 SQ.M 7 SQ.MTrt-Eval Interval 28 DAT 28 DAT 28 DAT 28 DAT 49 DAT 49 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 7 8 9 10 11 12

1 Untreated Check 0 d 0 c 0 b 0 e 0 b 0 c2 mesotrione 480 SC 100 G A/HA Post 1 A 100 a 96 a 100 a 95 a 100 a 97 ab


3 mesotrione 480 SC 100 G A/HA Post 1 A 100 a 100 a 100 a 87 bc 100 a 100 anicosulfuron/rimsulfuron 75 DF 25 G A/HA Post 1 Aatrazine 90 WG 280 G A/HA post 1 AAgral 90 SO 0.200 % V/V Post 1 A

4 nicosulfuron/rimsulfuron 75 DF 25 G A/HA Post 1 A 93 bc 100 a 100 a 91 ab 100 a 100 aflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA Post 1 AAgral 90 SO 0.250 % V/V Post 1 A

5 mesotrione 480 SC 100 G A/HA Post 2 B 89 c 86 b 100 a 80 cd 100 a 94 bnicosulfuron 75 DF 25 G A/HA Post 2 BAgral 90 SO 0.200 % V/V Post 2 B

6 mesotrione 480 SC 140 G A/HA Post 2 B 100 a 100 a 100 a 80 cd 100 a 100 anicosulfuron 75 DF 25 G A/HA Post 2 Batrazine 90 WG 280 G A/HA Post 2 BAgral 90 SO 0.200 % V/V Post 2 B

7 nicosulfuron 75 DF 25 G A/HA Post 2 B 99 ab 99 a 100 a 76 d 99 a 97 abprosulfuron 75 WG 10 G A/HA Post 2 Bdicamba 480 SL 140 G A/HA Post 2 BAgral 90 SO 0.200 % V/V Post 2 B



Weed Code POLLA AMBEL POLCO SETVI CHEAL AMARECrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Aug-13-02 Aug-13-02 Aug-13-02 Aug-13-02 Sep-03-02 Sep-03-02Crop Stage 13 LEAF 13 LEAF 13 LEAF 13 LEAF 15 LEAF 15 LEAFCrop Stage Scale 223.8 CM 223.8 CM 223.8 CM 223.8 CM 223.5 CM 223.5 CMWeed Stage 13 LEAF 19 LEAF 20 LEAF 15 LEAF 20 LEAF 20 LEAFWeed Density, Unit 7 SQ.M 4 SQ.M 2 SQ.M 20 SQ.M 20 SQ.M 6 SQ.MTrt-Eval Interval 49 DAT 49 DAT 49 DAT 49 DAT 70 DAT 70 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 13 14 15 16 17 18

1 Untreated Check 0 c 0 c 0 c 0 d 0 b 0 c2 mesotrione 480 SC 100 G A/HA Post 1 A 95 ab 90 b 88 ab 90 a 100 a 100 a


3 mesotrione 480 SC 100 G A/HA Post 1 A 100 a 100 a 100 a 86 abc 100 a 100 anicosulfuron/rimsulfuron 75 DF 25 G A/HA Post 1 Aatrazine 90 WG 280 G A/HA post 1 AAgral 90 SO 0.200 % V/V Post 1 A

4 nicosulfuron/rimsulfuron 75 DF 25 G A/HA Post 1 A 84 b 100 a 93 ab 88 ab 100 a 100 aflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA Post 1 AAgral 90 SO 0.250 % V/V Post 1 A

5 mesotrione 480 SC 100 G A/HA Post 2 B 86 b 96 a 64 b 77 c 100 a 98 bnicosulfuron 75 DF 25 G A/HA Post 2 BAgral 90 SO 0.200 % V/V Post 2 B

6 mesotrione 480 SC 140 G A/HA Post 2 B 100 a 100 a 98 a 81 abc 100 a 100 anicosulfuron 75 DF 25 G A/HA Post 2 Batrazine 90 WG 280 G A/HA Post 2 BAgral 90 SO 0.200 % V/V Post 2 B

7 nicosulfuron 75 DF 25 G A/HA Post 2 B 100 a 100 a 93 ab 81 bc 100 a 100 aprosulfuron 75 WG 10 G A/HA Post 2 Bdicamba 480 SL 140 G A/HA Post 2 BAgral 90 SO 0.200 % V/V Post 2 B



-135-

EVALUATION OF MESOTRIONE APPLIED POSTEMERGENCE IN CORN II


Weed Code POLLA AMBEL SETVICrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type CONTROL CONTROL CONTROL MOISTURE YIELD YIELDRating Unit % % % % H20 T/HA BU/ACRating Date Sep-03-02 Sep-03-02 Sep-03-02 Oct-09-02 Oct-09-02 Oct-09-02Crop Stage 15 LEAF 15 LEAF 15 LEAFCrop Stage Scale 223.5 CM 223.5 CM 223.5 CMWeed Stage 18 LEAF 17 LEAF 18 LEAFWeed Density, Unit 5 SQ.M 4 SQ.M 12 SQ.MTrt-Eval Interval 70 DAT 70 DAT DAT 70 131 DAE 131 DAE 131 DAETrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 19 20 21 22 24 25

1 Untreated Check 0 c 0 c 0 c 22.3 a 5.8 b 92.2 b2 mesotrione 480 SC 100 G A/HA Post 1 A 100 a 95 b 93 a 23.2 a 8.6 a 137.3 a


3 mesotrione 480 SC 100 G A/HA Post 1 A 100 a 100 a 89 ab 22.3 a 7.7 a 122.6 anicosulfuron/rimsulfuron 75 DF 25 G A/HA Post 1 Aatrazine 90 WG 280 G A/HA post 1 AAgral 90 SO 0.200 % V/V Post 1 A

4 nicosulfuron/rimsulfuron 75 DF 25 G A/HA Post 1 A 98 ab 100 a 92 ab 22.4 a 7.7 a 122.6 aflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA Post 1 AAgral 90 SO 0.250 % V/V Post 1 A

5 mesotrione 480 SC 100 G A/HA Post 2 B 95 b 100 a 86 b 23.0 a 7.7 a 122.3 anicosulfuron 75 DF 25 G A/HA Post 2 BAgral 90 SO 0.200 % V/V Post 2 B

6 mesotrione 480 SC 140 G A/HA Post 2 B 100 a 100 a 87 ab 23.6 a 8.2 a 130.5 anicosulfuron 75 DF 25 G A/HA Post 2 Batrazine 90 WG 280 G A/HA Post 2 BAgral 90 SO 0.200 % V/V Post 2 B

7 nicosulfuron 75 DF 25 G A/HA Post 2 B 100 a 100 a 87 b 22.8 a 7.5 a 119.1 aprosulfuron 75 WG 10 G A/HA Post 2 Bdicamba 480 SL 140 G A/HA Post 2 BAgral 90 SO 0.200 % V/V Post 2 B



Trial Comments

There was no visual injury in corn (ZEAMX) with the postemergence herbicide treatments evaluated.

The early postemergence applications of either mesotrione (100 g/ha) plus nicosulfuron/rimsulfuron (25 g/ha), mesotrione (100 g/ha) plus nicosulfuron/rimsulfuron (25 g/ha) plusatrazine (280 g/ha) or nicosulfuron/rimsulfuron (25 g/ha) plus flumetsulam/clopyralid/2,4-D (236 g/ha) all provided excellent full season control of lamb's-quarters (CHEAL), redrootpigweed (AMARE), green smartweed (POLLA), common ragweed (AMBEL) and green foxtail (SETVI).

The late postemergence application of either mesotrione (100 g/ha) plus nicosulfuron (25 g/ha), mesotrione (140 g/ha) plus nicosulfuron (25 g/ha) plus atrazine (280 g/ha) ornicosulfuron (25 g/ha) plus prosulfuron (10 g/ha) plus dicamba (140 g/ha) all provided excellent full season control of lamb's-quarters (CHEAL), redroot pigweed (AMARE), greensmartweed (POLLA), common ragweed (AMBEL) and good control of green foxtail (SETVI).

There was no effect of the herbicide treatments evaluated on corn maturity as measured by moisture content at harvest.

There was an increase in corn yield with all of the herbicide treatments evaluated relative to the weedy check. There was no difference in yield among the herbicide treatmentsevaluated.

-136-

BROAD SPECTRUM WEED CONTROL IN CORN WITH ATRAZINE/2,4-D TANKMIXES III (CN02C6)


CROP: ZEAMX, CORN, FIELD (PIONEER 37H26). Planted: May-22-02, 74000 S/H, 5.5 CM Deep, 75 CM Row Width. Planting Method: PRECISION PLANTER. Emerged On: May-31-02.FIELD Site. Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 44 M. Expt. Location: HRS - Range SS11.Site Description: %OM: 3.8 %Sand: 32 %Silt: 38 %Clay: 30 pH: 8 CEC: 26.

APPLICATION DESCRIPTION STAGE AT APPLICATIONApplication: A Application: ADate : Jun-13-02 Crop 1 ZEAMX 4 LEAFTime of Day: 7:55 AM Height : 18.2 CMMethod : CO2 SPRAYTiming : POST Weed 1 CHEAL 5 LEAFPlacement : FOLIAR Stg.Scale: 3 CMAir Temp. : 18.2 C Density : 15 M2% Humidity : 84 Weed 2 SINAR 4 LEAFWind Speed : 3.5 KM/H Stg.Scale: 2 CMDew Present: N Density : 1 M2Soil Moist.: SB-M SF-D Weed 3 AMARE 3 LEAFCloud Cover: 100% Stg.Scale: 1.6 CMEquipment : C02 SPRAY Density : 3 M2Pressure : 241 KPA Weed 4 POLLA 4 LEAFNozzle Type: FLAT FAN Stg.Scale: 3.5 CMNozzle Size: 8002 VS Density : 10 M2Noz.Spacing: 50 CM Weed 5 AMBEL 3 LEAFBoom Length: 2 M Stg.Scale: 1.5 CMBoom Height: 50 CM Density : 9 M2Carrier : WATER Weed 6 POLCO 3 LEAFAppl.Volume: 200 L/HA Stg.Scale: 2 CMPropellant : C02 Density : 1 M2 Weed 7 CAPBP Stg.Scale: Density : Weed 8 THLAR Stg.Scale: Density : Weed 9 ERYCH Stg.Scale: Density : Weed 10 ECHCG Stg.Scale: Density : Weed 11 SETVI 3 LEAF Stg.Scale: 3.3 CM Density : 16 M2 Weed 12 SETFA Stg.Scale: Density :

Weed Code CHEAL AMARE POLLA AMBEL POLCOCrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type VIS. INJURY VIS.INJURY CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % % %Rating Date Jun-19-02 Jul-09-02 Jul-09-02 Jul-09-02 Jul-09-02 Jul-09-02 Jul-09-02Crop Stage 6 LEAF 12 LEAF 12 LEAF 12 LEAF 12 LEAF 12 LEAF 12 LEAFCrop Stage Scale 24.3 CM 126 CM 126 CM 126 CM 126 CM 126 CM 126 CMWeed Stage 17 LEAF 13 LEAF 12 LEAF 16 LEAF 16 LEAFWeed Density, Unit 5 SQ. M 6 SQ. M 5 SQ. M 1 SQ. M 1 SQ. MTrt-Eval Interval 7 DAT 28 DAT 28 DAT 28 DAT 28 DAT 28 DAT 28 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 6 7

1 Untreated Check 0 b 0 a 0 d 0 b 0 c 0 c 0 c2 pendimethalin 400 EC 1680 G A/HA post A 0 b 0 a 100 a 95 a 88 a 69 ab 95 ab3 AE F130360 70 WG 70 G A/HA post A 1 ab 0 a 99 a 100 a 91 a 95 a 80 b


4 atrazine/2,4-D 390 SU 936 G A/HA post A 0 b 0 a 100 a 100 a 100 a 100 a 100 a5 pendimethalin 400 EC 1680 G A/HA post A 1 ab 0 a 100 a 100 a 100 a 100 a 100 a

atrazine/2,4-D 390 SU 936 G A/HA post A6 AE F130360 70 WG 70 G A/HA post A 2 ab 0 a 100 a 100 a 100 a 100 a 100 a

atrazine/2,4-D 390 SU 936 G A/HA post AMSO SO 1.75 L/HA post AUAN 28 % SO 2.50 L/HA post A

7 rimsulfuron 25 DF 15 G A/HA post A 2 ab 0 a 94 ab 100 a 92 a 65 ab 92 abSuper Spreader Sticker SO 0.200 % V/V post A

8 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 2 a 0 a 95 ab 100 a 98 a 63 ab 93 abSuper Spreader Sticker SO 0.200 % V/V post A

9 nicosulfuron 75 DF 25 G A/HA post A 0 ab 0 a 73 c 95 a 95 a 50 b 80 bSuper Spreader Sticker SO 0.200 % V/V post A

10 AE F130360 70 WG 70 G A/HA post A 1 ab 0 a 90 b 95 a 54 b 90 ab 95 abSuper Spreader Sticker SO 0.200 % V/V post A



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BROAD SPECTRUM WEED CONTROL IN CORN WITH ATRAZINE/2,4-D TANKMIXES III


Weed Code CAPBP ERYCH ECHCG SETVI SETFA CHEAL SINARCrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % % %Rating Date Jul-09-02 Jul-09-02 Jul-09-02 Jul-09-02 Jul-09-02 Aug-06-02 Aug-06-02Crop Stage 12 LEAF 12 LEAF 12 LEAF 12 LEAF 12 LEAF 13 LEAF 13 LEAFCrop Stage Scale 126 CM 126 CM 126 CM 126 CM 126 CM 196.8 CM 196.8 CMWeed Stage 13 LEAF 17 LEAF 9 LEAF 11 LEAF 16 LEAF 19 LEAF 8 LEAFWeed Density, Unit 20 SQ. M 1 SQ. M 7 SQ. M 2 SQ. M 20 SQ.M 4 SQ. M 2 SQ. MTrt-Eval Interval 28 DAT 28 DAT 28 DAT 28 DAT 28 DAT 56 DAT 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 8 9 10 11 12 13 14

1 Untreated Check 0 c 0 b 0 b 0 c 0 b 0 d 0 c2 pendimethalin 400 EC 1680 G A/HA post A 100 a 100 a 100 a 74 b 100 a 100 a 100 a3 AE F130360 70 WG 70 G A/HA post A 100 a 100 a 100 a 98 a 100 a 100 a 100 a


4 atrazine/2,4-D 390 SU 936 G A/HA post A 100 a 100 a 100 a 66 b 100 a 100 a 99 b5 pendimethalin 400 EC 1680 G A/HA post A 100 a 100 a 100 a 97 a 100 a 100 a 100 ab

atrazine/2,4-D 390 SU 936 G A/HA post A6 AE F130360 70 WG 70 G A/HA post A 100 a 100 a 100 a 98 a 100 a 100 a 100 a


7 rimsulfuron 25 DF 15 G A/HA post A 100 a 100 a 100 a 100 a 100 a 95 ab 100 aSuper Spreader Sticker SO 0.200 % V/V post A

8 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 100 a 100 a 100 a 100 a 100 a 96 ab 100 aSuper Spreader Sticker SO 0.200 % V/V post A

9 nicosulfuron 75 DF 25 G A/HA post A 100 b 100 a 100 a 96 a 100 a 90 bc 100 aSuper Spreader Sticker SO 0.200 % V/V post A

10 AE F130360 70 WG 70 G A/HA post A 100 a 100 a 100 a 96 a 100 a 86 c 100 aSuper Spreader Sticker SO 0.200 % V/V post A



Weed Code AMARE POLLA AMBEL POLCO THLAR CAPBP SETVICrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % % %Rating Date Aug-06-02 Aug-06-02 Aug-06-02 Aug-06-02 Aug-06-02 Aug-06-02 Aug-06-02Crop Stage 13 LEAF 13 LEAF 13 LEAF 13 LEAF 13 LEAF 13 LEAF 13 LEAFCrop Stage Scale 196.8 CM 196.8 CM 196.8 CM 196.8 CM 196.8 CM 196.8 CM 196.8 CMWeed Stage 19 LEAF 18 LEAF 15 LEAF 17 LEAF 11 LEAF 12 LEAF 13 LEAFWeed Density, Unit 6 SQ. M 5 SQ. M 2 SQ. M 2 SQ. M 4 SQ. M 25 SQ. M 34 SQ. MTrt-Eval Interval 56 DAT 56 DAT 56 DAT 56 DAT 56 DAT 56 DAT 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 15 16 17 18 19 20 21

1 Untreated Check 0 c 0 d 0 c 0 c 0 b 0 b 0 d2 pendimethalin 400 EC 1680 G A/HA post A 97 b 98 ab 88 ab 99 a 100 a 100 a 69 c3 AE F130360 70 WG 70 G A/HA post A 100 a 90 bc 100 a 50 b 100 a 100 a 90 ab


4 atrazine/2,4-D 390 SU 936 G A/HA post A 99 ab 99 ab 100 a 100 a 100 a 100 a 66 c5 pendimethalin 400 EC 1680 G A/HA post A 100 ab 100 a 100 a 100 a 100 a 100 a 97 a

atrazine/2,4-D 390 SU 936 G A/HA post A6 AE F130360 70 WG 70 G A/HA post A 100 a 100 a 100 a 100 a 100 a 100 a 89 ab


7 rimsulfuron 25 DF 15 G A/HA post A 100 a 94 abc 93 ab 95 a 100 a 100 a 94 abSuper Spreader Sticker SO 0.200 % V/V post A

8 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 100 a 96 ab 88 ab 50 b 100 a 100 a 94 abSuper Spreader Sticker SO 0.200 % V/V post A

9 nicosulfuron 75 DF 25 G A/HA post A 100 a 91 abc 63 b 68 ab 100 a 100 a 92 abSuper Spreader Sticker SO 0.200 % V/V post A

10 AE F130360 70 WG 70 G A/HA post A 100 a 85 c 69 ab 95 a 100 a 100 a 88 bSuper Spreader Sticker SO 0.200 % V/V post A



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BROAD SPECTRUM WEED CONTROL IN CORN WITH ATRAZINE/2,4-D TANKMIXES III


Weed CodeCrop Code ZEAMX ZEAMX ZEAMXRating Data Type MOISTURE YIELD YIELDRating Unit % H20 T/HA BU/ACRating Date Oct-09-02 Oct-09-02 Oct-09-02Trt-Eval Interval 118 DAT 118 DAT 118 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 22 24 25

1 Untreated Check 24.2 ab 4.1 b 66.1 b2 pendimethalin 400 EC 1680 G A/HA post A 23.1 bc 6.7 a 106.5 a3 AE F130360 70 WG 70 G A/HA post A 22.7 c 6.8 a 108.7 a


4 atrazine/2,4-D 390 SU 936 G A/HA post A 22.8 c 6.6 a 105.7 a5 pendimethalin 400 EC 1680 G A/HA post A 23.3 abc 6.7 a 106.7 a

atrazine/2,4-D 390 SU 936 G A/HA post A6 AE F130360 70 WG 70 G A/HA post A 24.5 a 7.1 a 113.4 a


7 rimsulfuron 25 DF 15 G A/HA post A 23.3 abc 6.1 a 97.0 aSuper Spreader Sticker SO 0.200 % V/V post A

8 nicosulfuron/rimsulfuron 75 DF 25 G A/HA post A 24.4 a 6.6 a 105.0 aSuper Spreader Sticker SO 0.200 % V/V post A

9 nicosulfuron 75 DF 25 G A/HA post A 23.7 abc 7.5 a 119.7 aSuper Spreader Sticker SO 0.200 % V/V post A

10 AE F130360 70 WG 70 G A/HA post A 23.8 abc 6.4 a 101.8 aSuper Spreader Sticker SO 0.200 % V/V post A

LSD (P=.05) 1.27 1.58 25.15Standard Deviation 0.88 1.09 17.33CV 3.72 16.82 16.82


Trial Comments

There was no commercially significant visual injury in corn (ZEAMX) with the postemergence herbicide treatments evaluated.

The postemergence application of pendimethalin (1680 g/ha) provided excellent full season control of lamb's-quarters (CHEAL), wild mustard (SINAR), redroot pigweed(AMARE), green smartweed (POLLA), wild buckwheat (POLCO), field pennycress (THLAR) and shepherd's purse (CAPBP), good control of common ragweed (AMBEL) and faircontrol of green foxtail (SETVI).

The postemergence application of AE F130360 (70 g/ha) plus MSO and UAN provided excellent full season control of lamb's-quarters, wild mustard, redroot pigweed, greensmartweed, common ragweed, field pennycress, shepherd's purse and green foxtail and poor control of wild buckwheat.

The postemergence application of atrazine/2,4-D (936 g/ha) provided excellent full season control of lamb's-quarters, wild mustard, redroot pigweed, green smartweed, commonragweed, wild buckwheat, field pennycress and shepherd's purse and fair control of green foxtail.

The postemergence tankmix of either pendimethalin (1680 g/ha) or AE F130360 (70 g/ha) plus atrazine/2,4-D (936 g/ha) provided excellent full season control of all the weedspecies evaluated.

The postemergence application of rimsulfuron (15 g/ha) plus the adjuvant super spreader sticker provided excellent full season control of all the species evaluated.

The postemergence application of nicosulfuron/rimsulfuron (25 g/ha) plus the adjuvant super sticker spreader provided excellent full season control of all the species evaluatedwith the exception of wild buckwheat.

The postemergence application of nicosulfuron (25 g/ha) plus the adjuvant super spreader sticker provided excellent full season control of all the species evaluated with theexception of common ragweed and wild buckwheat.

The postemergence application of AE F130360 (70 g/ha) plus the adjuvant super spreader sticker provided numerically poorer control of lamb's-quarters, green smartweed andcommon ragweed compared to the adjuvant system of MSO plus UAN.

There was no effect of the herbicide treatments evaluated on corn maturity as measured by moisture content at harvest.

There was an increase in corn yield with all of the herbicide treatments evaluated relative to the weedy check. There was no difference in yield among the herbicide treatmentsevaluated.

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TOLERANCE OF ROUNDUP READY CORN TO GLYPHOSATE (CN02C7)


CROP: ZEAMX, CORN, FIELD (DKC 42-71 RR). Planted: May-22-02, 74000 S/H, 5.5 CM Deep, 75 CM Row Width. Planting Method: PRECISION PLANTER.Emerged On: May-31-02.FIELD Site. Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 44 M. Expt. Location: HRS - Range SS11.Site Description: %OM: 4 %Sand: 38 %Silt: 31 %Clay: 31 pH: 8.1 CEC: 28.

APPLICATION DESCRIPTION STAGE AT APPLICATIONApplication: A B C Application: A B CDate : Jun-13-02 Jun-18-02 Jun-24-02 Crop 1 ZEAMX 4 LEAF 6 LEAF 7 LEAFTime of Day: 9:25 AM 9:20 AM 9:10 PM Height : 17.6 CM 23.5 CM 46 CMMethod : CO2 SPRAY CO2 SPRAY CO2 SPRAYTiming : POST 1 POST 2 POST 3 Weed 1Placement : FOLIAR FOLIAR FOLIAR Stg.Scale:Air Temp. : 21.5 C 31.9 C 23 C Density :% Humidity : 65 28 87Wind Speed : 8.3 KPH 4.2 KPH 2.5 KPHDew Present: N Y NSoil Moist.: SB-M SF-D SB-M SF-M SB-M SF-DCloud Cover: 90% 10% 50%Equipment : CO2 SPRAY CO2 SPRAY CO2 SPRAYPressure : 241 KPA 241 KPA 241 KPANozzle Type: FLAT FAN FLAT FAN FLAT FANNozzle Size: 8002 VS 8002 VS 8002 VSNoz.Spacing: 50 CM 50 CM 50 CMBoom Length: 2 M 2 M 2 MBoom Height: 50 CM 50 CM 50 CMCarrier : WATER WATER WATERAppl.Volume: 200 L/HA 200 L/HA 200 L/HAPropellant : CO2 CO2 CO2

Crop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type GROWTH RED PHYTO GROWTH RED PHYTO MOISTURE YIELDRating Unit % % % % % T/HARating Date Oct-01-02 Oct-01-02Crop Stage SEE SEE SEE SEECrop Stage Scale COMMENTS COMMENTS COMMENTS COMMENTSTrt-Eval Interval 7 DAT 7 DAT 14 DAT 14 DAT 123 DAE 123 DAETrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 71 Untreated Check 0 a 0 b 0 a 0 a 23.4 ab 8.4 a2 glyphosate - RT 360 SL 1800 G A/HA post 1 A 0 a 0 b 0 a 0 a 23.1 b 8.6 a3 glyphosate - RT 360 SL 3600 G A/HA post 1 A 0 a 1 a 0 a 0 a 24.0 ab 8.8 a4 glyphosate - RT 360 SL 1800 G A/HA post 2 B 0 a 0 b 0 a 0 a 23.6 ab 9.0 a5 glyphosate - RT 360 SL 3600 G A/HA post 2 B 0 a 0 b 0 a 0 a 23.6 ab 9.1 a6 glyphosate - RT 360 SL 1800 G A/HA post 3 C 0 a 0 b 0 a 0 a 23.8 ab 9.0 a7 glyphosate - RT 360 SL 3600 G A/HA post 3 C 0 a 0 b 0 a 0 a 24.4 a 9.1 aLSD (P=.05) 0.0 0.5 0.0 0.0 1.05 0.87Standard Deviation 0.0 0.4 0.0 0.0 0.71 0.59CV 0.0 337.75 0.0 0.0 2.98 6.65Means followed by same letter do not significantly differ (P=.05, LSD)

Crop Code ZEAMXRating Data Type YIELDRating Unit BU/ACRating Date Oct-01-02Trt-Eval Interval 123 DAETrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 81 Untreated Check 134.3 a2 glyphosate - RT 360 SL 1800 G A/HA post 1 A 136.5 a3 glyphosate - RT 360 SL 3600 G A/HA post 1 A 139.8 a4 glyphosate - RT 360 SL 1800 G A/HA post 2 B 143.3 a5 glyphosate - RT 360 SL 3600 G A/HA post 2 B 145.2 a6 glyphosate - RT 360 SL 1800 G A/HA post 3 C 142.9 a7 glyphosate - RT 360 SL 3600 G A/HA post 3 C 145.0 aLSD (P=.05) 13.93Standard Deviation 9.38CV 6.65Means followed by same letter do not significantly differ (P=.05, LSD)

Trial Comments

This experiment was maintained weed free to determine the tolerance of glyphosate-tolerant corn (DKC 42-71 RR) to glyphosate applications at the 4, 6 and 7 leaf stage. Therewas no effect of glyphosate applied at 1800 and 3600 g/ha on growth reduction and visual crop injury in glyphosate-tolerant corn evaluated 7 and 14 days after application. Inaddition, there was no effect on maturity and yield.

June 19/02 - trt. 1-3 - 7 DATJune 24/02 - trt. 1-3 - 14 DAT trt. 4-5 - 7 DATJuly 3/02 - trt. 4-5 - 14 DAT trt. 6-7 - 7 DATJuly 9/02 - trt. 6-7 - 7 DAT

Rating Counts: June 19/02 - 6 LEAF June 25/02 - 8 LEAF 23.5 CM (height) 51.8 CM (height)

-140-

COMPARISON OF WEED MANAGEMENT SYSTEMS IN CORN I (FC02A1)

Christy Shropshire, Peter Sikkema Experiment ID: FC02A1

CROP: ZEAMX: CORN, FIELD (LIBERTY LINK) (37H26). Planted: May-21-02, 75600 SEEDS/HA, 5 CM Deep, 76 CM Row Width. Emerged On: May-31-02.Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: RC - Range C6.Site Description: Soil Texture: LOAM. %OM: 5.73 %Sand: 40.9 %Silt: 37.2 %Clay: 21.9 pH: 7.6APPLICATION DESCRIPTION STAGE AT APPLICATIONApplication: A B C D Application: A B C DDate : May-21-02 May-24-02 Jun-3-02 Jun-18-02 Crop 1 ZEAMX NOT PLANT NOT EMERG 2 LF 6 LFTime of Day: 10:45 11:30 17:45 10:45 Height : 8 CM 30 CMMethod :Timing : PPI PRE 1-2 LF 6-7 LF Weed 1 ABUTH C-1 LF C-5 LFPlacement : Stg.Scale: 0.5-1 CM 1-7 CMAir Temp. : 13.8 C 10.5 C 13 C 26.4 C Density : 0 /M2 0 /M2 5 /M2 10 /M2% Humidity : 41 87 70 61 Weed 2 AMARE COTY 2-4 LFWind Speed : 7 KM/H 8 KM/H 8 KM/H 7 KM/H Stg.Scale: 0.5-1 CM 1-4 CMDew Present: N N N N Density : 0 /M2 0 /M2 5 /M2 5 /M2Soil Moist.: MOIST MOIST MOIST MOIST Weed 3 AMBEL C-4 LF 4-10 LFCloud Cover: 50% 100% 100% 0% Stg.Scale: 0.5-3 CM 3-10 CMEquipment : CO2 Backp CO2 Backp CO2 Backp CO2 Backp Density : 0 /M2 0 /M2 4.5 /M2 4.5 /M2Pressure : 207 kPa 207 kPa 207 kPa 207 kPa Weed 4 CHEAL C-4 LF C-20+ LFNozzle Type: FLAT FAN FLAT FAN FLAT FAN FLAT FAN Stg.Scale: 1-2 CM 1-7 CMNozzle Size: XR8002 XR8002 XR8002 XR8002 Density : 0 /M2 0 /M2 13 /M2 22 /M2Noz.Spacing: 50 CM 50 CM 50 CM 50 CM Weed 5 POLPE C-2 LF 1-8 LFBoom Length: 2 M 2 M 2 M 2 M Stg.Scale: 0.5-2 CM 1-7 CMBoom Height: 48 CM 48 CM 48 CM 48 CM Density : 0 /M2 0 /M2 5.5 /M2 19 /M2Carrier : WATER WATER WATER WATER Weed 6 SETVI SPK-3 LFAppl.Volume: 200 L/ha 200 L/ha 200 L/ha 200 L/ha Stg.Scale: 1-4 CMPropellant : CO2 CO2 CO2 CO2 Density : 0 /M2 0 /M2 0 /M2 6 /M2

TRT. 4 - MAY-21: PPI INCORPORATED WITH 2 PASSES (IN OPPOSITE DIRECTIONS) OF AN S-TINE CULTIVATOR WITH ROLLING BASKET HARROWS.TRT. 4 - JUN-18: CHEAL:C-20+ LF, 1-7 CM, 7/M2; AMARE: 1-5 LF, 1-4 CM, 2/M2; ABUTH:C-4 LF, 1-7 CM, 14/M2; AMBEL: 4-6 LF, 2-6 CM, 3/M2; POLPE:4-8 LF, 3-6 CM, 4/M2

Weed Code ABUTHCrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXPart Rated TRT1-4 TRT1-4 TRT1-4 ALL ALL ALLRating Data Type INJURY INJURY INJURY INJURY INJURY INJURY CONTROLRating Unit % % % % % % %Rating Date Jun-11-02 Jun-19-02 Jun-25-02 Jun-19-02 Jun-25-02 Jul-8-02 Jul-2-02Crop Stage 4 LF 6-7 LF 7-8 LF 6-7 LF 7-8 LF 11-13 LF 9-10 LFCrop Stage Scale 21 CM 32 CM 50 CM 32 CM 50 CM 90 CM 65 CMWeed Stage 2-7 LFWeed Density, Unit 15 /M2Footnote Number 1 1Trt-Eval Interval 7 DAE 14 DAE 21 DAE 1 DAT 7 DAT 21 DAT 14 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 6 71 Untreated Check 0 a 0 a 0 a 0 d 0 d 0 a 0 d2 isoxaflutole 480 SC 79 G A/HA PRE B 0 a 0 a 0 a 0 d 0 d 0 a 97 a

atrazine 480 SC 800 G A/HA PRE B3 isoxaflutole 480 SC 105 G A/HA PRE B 0 a 0 a 0 a 0 d 0 d 0 a 98 a

atrazine 480 SC 1063 G A/HA PRE B4 s-metolachlor/benoxacor 915 EC 1600 G A/HA PPI A 0 a 0 a 0 a 0 d 0 d 0 a 92 a

prosulfuron 75 DF 10 G A/HA POST 2 Ddicamba 480 SL 140 G A/HA POST 2 DAgral 90 SO 0.200 % V/V POST 2 D

5 dimethenamid 900 EC 1125 G A/HA POST 1 C 0 d 0 d 0 a 94 adicamba/atrazine 401 SC 1600 G A/HA POST 1 C

6 glufosinate 200 SL 400 G A/HA POST 2 D 0 d 0 d 0 a 90 aammonium sulfate SO 6.00 L/HA POST 2 D

7 glufosinate 200 SL 400 G A/HA POST 2 D 0 d 0 d 0 a 92 aatrazine 480 SC 840 G A/HA POST 2 D

8 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST 2 D 4 c 3 c 0 a 79 bbromoxynil 280 EC 140 G A/HA POST 2 Datrazine 480 SC 500 G A/HA POST 2 DAgral 90 SO 0.200 % V/V POST 2 D

9 nicosulfuron 75 DF 25 G A/HA POST 2 D 9 a 8 a 0 a 68 cbromoxynil 280 EC 280 G A/HA POST 2 DAgral 90 SO 0.200 % V/V POST 2 D

10 AE F130360 70 WG 70 G A/HA POST 2 D 0 d 0 d 0 a 92 aMSO SO 1.75 L/HA POST 2 DUAN 28 % SO 2.50 L/HA POST 2 D

11 AE F130360 70 WG 70 G A/HA POST 2 D 0 d 0 d 0 a 93 adicamba 480 SL 140 G A/HA POST 2 DMSO SO 1.75 L/HA POST 2 DUAN 28 % SO 2.50 L/HA POST 2 D

12 AE F130360 70 WG 70 G A/HA POST 2 D 7 b 5 b 0 a 96 abromoxynil 280 EC 140 G A/HA POST 2 Datrazine 480 SC 500 G A/HA POST 2 DMSO SO 1.75 L/HA POST 2 DUAN 28 % SO 2.50 L/HA POST 2 D

13 AE F130360 70 WG 70 G A/HA POST 2 D 0 d 0 d 0 a 98 aprosulfuron 75 DF 10 G A/HA POST 2 Ddicamba 480 SL 140 G A/HA POST 2 DMSO SO 1.75 L/HA POST 2 DUAN 28 % SO 2.50 L/HA POST 2 D

-141-

COMPARISON OF WEED MANAGEMENT SYSTEMS IN CORN I


Weed Code ABUTHCrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXPart Rated TRT1-4 TRT1-4 TRT1-4 ALL ALL ALLRating Data Type INJURY INJURY INJURY INJURY INJURY INJURY CONTROLRating Unit % % % % % % %Rating Date Jun-11-02 Jun-19-02 Jun-25-02 Jun-19-02 Jun-25-02 Jul-8-02 Jul-2-02Crop Stage 4 LF 6-7 LF 7-8 LF 6-7 LF 7-8 LF 11-13 LF 9-10 LFCrop Stage Scale 21 CM 32 CM 50 CM 32 CM 50 CM 90 CM 65 CMWeed Stage 2-7 LFWeed Density, Unit 15 /M2Footnote Number 1 1Trt-Eval Interval 7 DAE 14 DAE 21 DAE 1 DAT 7 DAT 21 DAT 14 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 6 714 AE F130360 70 WG 70 G A/HA POST 2 D 0 d 0 d 0 a 98 a

dicamba/atrazine 401 SC 1000 G A/HA POST 1 CMSO SO 1.75 L/HA POST 2 DUAN 28 % SO 2.50 L/HA POST 2 D

15 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST 2 D 0 d 0 d 0 a 68 cAgral 90 SO 0.200 % V/V POST 2 D

16 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST 2 D 0 d 0 d 0 a 91 aflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA POST 2 DAgral 90 SO 0.250 % V/V POST 2 D

17 nicosulfuron 75 DF 25 G A/HA POST 2 D 0 d 0 d 0 a 91 aprosulfuron 75 DF 10 G A/HA POST 2 Ddicamba 480 SL 140 G A/HA POST 2 DAgral 90 SO 0.200 % V/V POST 2 D

LSD (P=.05) 0.0 0.0 0.0 1.1 0.8 0.0 10.0Standard Deviation 0.0 0.0 0.0 0.8 0.6 0.0 7.0CV 0.0 0.0 0.0 68.08 63.18 0.0 8.27Column 4 and 5 Footnote: NECROTIC STRIPS - EDGES AND INTERVEINAL

Weed Code AMARE AMBEL CHEAL POLPE SETVI ABUTHCrop Code ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Jul-2-02 Jul-2-02 Jul-2-02 Jul-2-02 Jul-2-02 Aug-15-02Crop Stage TASL/SLKCrop Stage Scale 1-2 MWeed Stage 5-20+ LF 4-20+ LF 4-20+ LF 2-20+ LF 6-8 LFWeed Density, Unit 7 M2 5 /M2 20 /M2 37 /M2 5 /M2Trt-Eval Interval 14 DAT 14 DAT 14 DAT 14 DAT 14 DAT 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 8 9 10 11 12 131 Untreated Check 0 d 0 f 0 f 0 f 0 d 0 g2 isoxaflutole 480 SC 79 G A/HA PRE B 99 a 99 a 99 a 97 a 97 ab 96 a

atrazine 480 SC 800 G A/HA PRE B3 isoxaflutole 480 SC 105 G A/HA PRE B 99 a 99 a 99 a 98 a 98 ab 97 a

atrazine 480 SC 1063 G A/HA PRE B4 s-metolachlor/benoxacor 915 EC 1600 G A/HA PPI A 98 a 96 a 95 abc 91 abc 96 ab 86 abc


5 dimethenamid 900 EC 1125 G A/HA POST 1 C 99 a 99 a 99 a 99 a 95 b 91 abdicamba/atrazine 401 SC 1600 G A/HA POST 1 C

6 glufosinate 200 SL 400 G A/HA POST 2 D 83 c 94 ab 99 a 64 de 98 ab 45 dammonium sulfate SO 6.00 L/HA POST 2 D

7 glufosinate 200 SL 400 G A/HA POST 2 D 98 a 98 a 99 a 94 ab 99 a 88 abcatrazine 480 SC 840 G A/HA POST 2 D

8 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST 2 D 95 ab 86 bcd 99 a 93 ab 97 ab 35 debromoxynil 280 EC 140 G A/HA POST 2 Datrazine 480 SC 500 G A/HA POST 2 DAgral 90 SO 0.200 % V/V POST 2 D

9 nicosulfuron 75 DF 25 G A/HA POST 2 D 97 a 82 d 98 ab 93 ab 91 c 5 fgbromoxynil 280 EC 280 G A/HA POST 2 DAgral 90 SO 0.200 % V/V POST 2 D

10 AE F130360 70 WG 70 G A/HA POST 2 D 96 a 85 bcd 84 d 70 d 96 ab 51 dMSO SO 1.75 L/HA POST 2 DUAN 28 % SO 2.50 L/HA POST 2 D

11 AE F130360 70 WG 70 G A/HA POST 2 D 96 ab 83 cd 84 d 78 bcd 97 ab 84 abcdicamba 480 SL 140 G A/HA POST 2 DMSO SO 1.75 L/HA POST 2 DUAN 28 % SO 2.50 L/HA POST 2 D

12 AE F130360 70 WG 70 G A/HA POST 2 D 99 a 99 a 99 a 96 a 97 ab 71 cbromoxynil 280 EC 140 G A/HA POST 2 Datrazine 480 SC 500 G A/HA POST 2 DMSO SO 1.75 L/HA POST 2 DUAN 28 % SO 2.50 L/HA POST 2 D

13 AE F130360 70 WG 70 G A/HA POST 2 D 97 a 91 abc 93 bc 96 a 99 ab 92 abprosulfuron 75 DF 10 G A/HA POST 2 Ddicamba 480 SL 140 G A/HA POST 2 DMSO SO 1.75 L/HA POST 2 DUAN 28 % SO 2.50 L/HA POST 2 D

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Weed Code AMARE AMBEL CHEAL POLPE SETVI ABUTHCrop Code ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Jul-2-02 Jul-2-02 Jul-2-02 Jul-2-02 Jul-2-02 Aug-15-02Crop Stage TASL/SLKCrop Stage Scale 1-2 MWeed Stage 5-20+ LF 4-20+ LF 4-20+ LF 2-20+ LF 6-8 LFWeed Density, Unit 7 M2 5 /M2 20 /M2 37 /M2 5 /M2Trt-Eval Interval 14 DAT 14 DAT 14 DAT 14 DAT 14 DAT 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 8 9 10 11 12 1314 AE F130360 70 WG 70 G A/HA POST 2 D 99 a 99 a 99 a 99 a 99 a 96 a

dicamba/atrazine 401 SC 1000 G A/HA POST 1 CMSO SO 1.75 L/HA POST 2 DUAN 28 % SO 2.50 L/HA POST 2 D

15 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST 2 D 99 a 60 e 56 e 51 e 97 ab 20 efAgral 90 SO 0.200 % V/V POST 2 D

16 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST 2 D 91 b 93 ab 91 c 74 cd 95 b 86 abcflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA POST 2 DAgral 90 SO 0.250 % V/V POST 2 D

17 nicosulfuron 75 DF 25 G A/HA POST 2 D 94 ab 90 a-d 94 bc 89 abc 97 ab 76 bcprosulfuron 75 DF 10 G A/HA POST 2 Ddicamba 480 SL 140 G A/HA POST 2 DAgral 90 SO 0.200 % V/V POST 2 D


Weed Code AMARE AMBEL CHEAL POLPE SETVICrop Code ZEAMX ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL YIELD YIELDRating Unit % % % % % T/HA BU/ACRating Date Aug-15-02 Aug-15-02 Aug-15-02 Aug-15-02 Aug-15-02 Oct-9-02 Oct-9-02Weed Stage 5-20+ LF 6-20+ LF 6-20+ LF 6-20+ LF 6-8 LFWeed Density, Unit 7 M2 10 /M2 25 /M2 4 /M2 1 /M2Trt-Eval Interval 56 DAT 56 DAT 56 DAT 56 DAT 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 14 15 16 17 18 21 221 Untreated Check 0 e 0 f 0 f 0 f 0 d 0.71 e 11.3 e2 isoxaflutole 480 SC 79 G A/HA PRE B 98 a 98 a 99 ab 94 ab 96 a 2.88 abc 45.9 abc

atrazine 480 SC 800 G A/HA PRE B3 isoxaflutole 480 SC 105 G A/HA PRE B 99 a 99 a 99 ab 97 a 96 a 2.69 abc 42.8 abc

atrazine 480 SC 1063 G A/HA PRE B4 s-metolachlor/benoxacor 915 EC 1600 G A/HA PPI A 99 a 93 ab 99 ab 93 ab 91 ab 2.85 abc 45.3 abc


5 dimethenamid 900 EC 1125 G A/HA POST 1 C 99 a 99 a 99 a 99 a 98 a 3.38 a 53.8 adicamba/atrazine 401 SC 1600 G A/HA POST 1 C

6 glufosinate 200 SL 400 G A/HA POST 2 D 11 d 91 abc 85 d 48 d 98 a 2.38 bcd 38.0 bcdammonium sulfate SO 6.00 L/HA POST 2 D

7 glufosinate 200 SL 400 G A/HA POST 2 D 98 a 98 a 99 ab 93 ab 98 a 2.37 bcd 37.7 bcdatrazine 480 SC 840 G A/HA POST 2 D

8 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST 2 D 98 a 81 d 99 ab 79 bc 95 a 2.55 bc 40.7 bcbromoxynil 280 EC 140 G A/HA POST 2 Datrazine 480 SC 500 G A/HA POST 2 DAgral 90 SO 0.200 % V/V POST 2 D

9 nicosulfuron 75 DF 25 G A/HA POST 2 D 78 c 84 cd 96 c 53 d 80 b 2.37 bcd 37.8 bcdbromoxynil 280 EC 280 G A/HA POST 2 DAgral 90 SO 0.200 % V/V POST 2 D

10 AE F130360 70 WG 70 G A/HA POST 2 D 95 ab 88 bcd 85 d 53 d 97 a 2.42 bc 38.5 bcMSO SO 1.75 L/HA POST 2 DUAN 28 % SO 2.50 L/HA POST 2 D

11 AE F130360 70 WG 70 G A/HA POST 2 D 98 a 94 ab 98 abc 85 abc 91 ab 2.74 abc 43.7 abcdicamba 480 SL 140 G A/HA POST 2 DMSO SO 1.75 L/HA POST 2 DUAN 28 % SO 2.50 L/HA POST 2 D

12 AE F130360 70 WG 70 G A/HA POST 2 D 99 a 94 ab 99 ab 96 ab 80 b 3.00 ab 47.8 abbromoxynil 280 EC 140 G A/HA POST 2 Datrazine 480 SC 500 G A/HA POST 2 DMSO SO 1.75 L/HA POST 2 DUAN 28 % SO 2.50 L/HA POST 2 D

13 AE F130360 70 WG 70 G A/HA POST 2 D 98 a 97 a 98 abc 94 ab 96 a 3.07 ab 49.0 abprosulfuron 75 DF 10 G A/HA POST 2 Ddicamba 480 SL 140 G A/HA POST 2 DMSO SO 1.75 L/HA POST 2 DUAN 28 % SO 2.50 L/HA POST 2 D

14 AE F130360 70 WG 70 G A/HA POST 2 D 99 a 99 a 99 a 99 a 98 a 3.10 ab 49.5 abdicamba/atrazine 401 SC 1000 G A/HA POST 1 CMSO SO 1.75 L/HA POST 2 DUAN 28 % SO 2.50 L/HA POST 2 D

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Weed Code AMARE AMBEL CHEAL POLPE SETVICrop Code ZEAMX ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL YIELD YIELDRating Unit % % % % % T/HA BU/ACRating Date Aug-15-02 Aug-15-02 Aug-15-02 Aug-15-02 Aug-15-02 Oct-9-02 Oct-9-02Weed Stage 5-20+ LF 6-20+ LF 6-20+ LF 6-20+ LF 6-8 LFWeed Density, Unit 7 M2 10 /M2 25 /M2 4 /M2 1 /M2Trt-Eval Interval 56 DAT 56 DAT 56 DAT 56 DAT 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 14 15 16 17 18 21 22

15 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST 2 D 96 ab 25 e 29 e 23 e 98 a 1.58 d 25.2 dAgral 90 SO 0.200 % V/V POST 2 D

16 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST 2 D 91 b 95 ab 97 bc 28 e 66 c 2.10 cd 33.5 cdflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA POST 2 DAgral 90 SO 0.250 % V/V POST 2 D

17 nicosulfuron 75 DF 25 G A/HA POST 2 D 97 a 93 ab 98 abc 71 c 98 a 2.86 abc 45.6 abcprosulfuron 75 DF 10 G A/HA POST 2 Ddicamba 480 SL 140 G A/HA POST 2 DAgral 90 SO 0.200 % V/V POST 2 D



Trial Comments

There was no visual injury of commercial significance in corn with the preplant incorporated, preemergence and postemergence herbicide treatments evaluated. The treatmentscontaining bromoxynil resulted in some visual crop injury shortly after application, but the crop recover quickly with no injury observed 21 DAT.

The preplant incorporated treatment of s-metolachlor/benoxacor followed by prosulfuron plus dicamba applied postemergence provided excellent full season control of redrootpigweed (AMARE), common ragweed (AMBEL), lamb's-quarters (CHEAL), lady's thumb (POLPE) and green foxtail (SETVI) and good control of velvetleaf (ABUTH).

The preemergence application of isoxaflutole plus atrazine (both rates) provided excellent full season control of all the weeds evaluated.

The early postemergence application of dimethenamid plus dicamba/atrazine provided excellent full season control of all the weeds evaluated.

Glufosinate alone provided excellent control of common ragweed and green foxtail, good control of lamb's-quarters, and poor control of velvetleaf, redroot pigweed and lady'sthumb.

The tankmix of glufosinate plus atrazine provided good to excellent full season broadleaf and grass weed control.

The tankmix of nicosulfuron/rimsulfuron plus bromoxynil plus atrazine was weak on velvetleaf.

The tankmix of nicosulfuron plus bromoxynil was weak on velvetleaf, redroot pigweed and lady's thumb.

AE F130360 provided excellent full season control of redroot pigweed and green foxtail, good control of common ragweed and lamb's-quarters and poor control of velvetleaf andlady's thumb.

The tankmixes of AE F130360 plus either dicamba or bromoxynil plus atrazine both provided good to excellent full season control with the exception of velvetleaf.

The tankmixes of AE F130360 plus either prosulfuron plus dicamba or dicamba/atrazine both provided excellent control of all the weed species in this trial.

Nicosulfuron/rimsulfuron provided excellent full season control of redroot pigweed and green foxtail.

The tankmix of nicosulfuron/rimsulfuron plus flumetsulam/clopyralid/2,4-D was weak on lady's thumb and green foxtail.

The tankmix of nicosulfuron plus prosulfuron plus dicamba was weak on velvetleaf and lady's thumb.

Corn yields were extremely low and variable at Ridgetown in 2002 due to dry conditions. Corn yields closely correlated with the level of weed control.

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BIOLOGICALLY EFFECTIVE DOSE OF FORAMSULFURON FOR WEED CONTROL IN CORN (FC02C2)

Christy Shropshire, Peter Sikkema Experiment ID: FC02C2

CROP: ZEAMX, CORN, FIELD (ROUNDUP READY) (DKC 53-33). Planted: May-21-02, 75600 SEEDS/HA, 5 CM Deep, 76 CM Row Width. Emerged On: May-31-02.Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: RC - Range B7.Site Description: Soil Texture: LOAM. %OM: 7.3 %Sand: 43.2 %Silt: 33.5 %Clay: 23.3 pH: 7

WEED FREE MAINTENTANCE: GLYPHOSATE APPLIED (900 G AI/HA) TO TRT.2 ON JUN-18-02

APPLICATION DESCRIPTION STAGE AT APPLICATIONApplication: A Application: ADate : Jun-12-02 Crop 1 ZEAMX 4-5 LFTime of Day: 16:30 Height : 20 CMMethod :Timing : POST Weed 1 ABUTH C-4 LFPlacement : Stg.Scale: 1-5 CMAir Temp. : 25.1 C Density : 12 /M2% Humidity : 62 Weed 2 AMBEL 2-8 LFWind Speed : 10 KM/H Stg.Scale: 0.5-15 CMDew Present: N Density : 26 /M2Soil Moist.: AT DEPTH Weed 3 CHEAL 2-20+ LFCloud Cover: 50% Stg.Scale: 0.5-10 CMEquipment : CO2 Backp Density : 43 /M2Pressure : 207 kPa Weed 4 POLPE 2-6 LFNozzle Type: FLAT FAN Stg.Scale: 1-3 CMNozzle Size: XR8002 Density : 7 /M2Noz.Spacing: 50 CM Weed 5 SOLPT C-4 LFBoom Length: 2 M Stg.Scale: 0.5-1 CMBoom Height: 48 CM Density : 9 /M2Carrier : WATER Weed 6 SETVI 2-3 LFAppl.Volume: 200 L/ha Stg.Scale: 3-4 CMPropellant : CO2 Density : 3.5 /M2

Weed Code ABUTH AMBELCrop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMXRating Data Type INJURY INJURY INJURY INJURY INJURY CONTROL CONTROLRating Unit % % % % % % %Rating Date Jun-18-02 Jun-18-02 Jun-18-02 Jun-25-02 Jul-8-02 Jul-8-02 Jul-8-02Crop Stage 5-6 LF 5-6 LF 5-6 LF 7-8 LF 10-12 LFCrop Stage Scale 30 CM 30 CM 30 CM 65 CM 100 CMWeed Stage 2-7 LF 8-20+ LFWeed Density, Unit 13.5M2 23 M2Footnote Number 1 2 3 4Trt-Eval Interval 7 DAT 7 DAT 7 DAT 14 DAT 28 DAT 28 DAT 28 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 6 71 Weedy check 0 c 2 ef 0 d 0 bc 0 a 0 d 0 e2 Weed free check 0 c 1 f 0 d 0 c 0 a 100 a 100 a3 AE F130360 70 WG 8.75 G A/HA POST A 3 c 3 c-f 3 c 0 c 0 a 94 bc 64 d

MSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

4 AE F130360 70 WG 17.5 G A/HA POST A 1 c 3 c-f 4 c 0 c 0 a 95 b 75 cMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

5 AE F130360 70 WG 35 G A/HA POST A 6 b 6 bcd 7 b 1 abc 0 a 92 c 90 bMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

6 AE F130360 70 WG 70 G A/HA POST A 10 a 6 abc 7 b 1 abc 0 a 94 bc 95 abMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

7 AE F130360 70 WG 105 G A/HA POST A 8 ab 5 b-e 7 b 1 abc 0 a 94 bc 97 abMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

8 AE F130360 70 WG 140 G A/HA POST A 9 ab 8 ab 9 a 1 abc 0 a 95 b 97 abMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

9 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 1 c 6 abc 11 a 1 ab 0 a 96 b 55 dAgral 90 SO 0.200 % V/V POST A

10 AE F130360 70 WG 70 G A/HA POST A 3 c 9 a 11 a 1 a 0 a 96 b 98 abprosulfuron 75 DF 10 G A/HA POST Adicamba 480 SL 140 G A/HA POST AMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

11 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 0 c 2 def 7 b 1 abc 0 a 95 bc 97 abprosulfuron 75 DF 10 G A/HA POST Adicamba 480 SL 140 G A/HA POST AAgral 90 SO 0.200 % V/V POST A



Column 1 Footnote: GROWTH REDUCTIONColumn 2 Footnote: PURPLING OF LEAVES - VEINS AND MARGINS FIRSTColumn 3 Footnote: YELLOW FLASH IN WHORL AND PATCHY CHLOROSIS OF LEAVES 4-6Column 4 Footnote: PURPLING OF LOWER LEAVES

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BIOLOGICALLY EFFECTIVE DOSE OF FORAMSULFURON FOR WEED CONTROL IN CORN


Weed Code CHEAL POLPE SOLPT SETVI ABUTH AMBELCrop Code ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Jul-8-02 Jul-8-02 Jul-8-02 Jul-8-02 Aug-19-02 Aug-19-02Crop Stage COB FILLCrop Stage Scale 1-2.5 MWeed Stage 14-20+LF 6-20+ LF 2-4 LF 3-8 LF 6-8 LF 20+ LFWeed Density, Unit 51 /M2 13 /M2 6.5 /M2 1.5 /M2 5.5 /M2 46 /M2Trt-Eval Interval 28 DAT 28 DAT 26 DA-A 28 DAT 70 DAT 70 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 8 9 10 11 12 13

1 Weedy check 0 e 0 d 0 c 0 e 0 f 0 e2 Weed free check 100 a 100 a 100 a 100 a 100 a 100 a3 AE F130360 70 WG 8.75 G A/HA POST A 50 d 33 c 98 a 84 d 53 e 24 d


4 AE F130360 70 WG 17.5 G A/HA POST A 63 c 43 c 99 a 88 d 83 bc 50 cMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

5 AE F130360 70 WG 35 G A/HA POST A 86 b 71 b 99 a 94 c 86 b 89 bMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

6 AE F130360 70 WG 70 G A/HA POST A 96 a 86 ab 99 a 94 bc 65 d 92 abMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

7 AE F130360 70 WG 105 G A/HA POST A 97 a 93 a 99 a 96 abc 75 cd 95 abMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

8 AE F130360 70 WG 140 G A/HA POST A 98 a 96 a 99 a 99 ab 79 bc 97 abMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

9 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 71 c 91 a 0 c 98 abc 97 a 16 dAgral 90 SO 0.200 % V/V POST A

10 AE F130360 70 WG 70 G A/HA POST A 99 a 98 a 99 a 98 abc 83 bc 99 aprosulfuron 75 DF 10 G A/HA POST Adicamba 480 SL 140 G A/HA POST AMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

11 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 99 a 97 a 85 b 98 abc 79 bc 96 abprosulfuron 75 DF 10 G A/HA POST Adicamba 480 SL 140 G A/HA POST AAgral 90 SO 0.200 % V/V POST A



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BIOLOGICALLY EFFECTIVE DOSE OF FORAMSULFURON FOR WEED CONTROL IN CORN


Weed Code CHEAL POLPE SOLPT SETVICrop Code ZEAMX ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL YIELD YIELDRating Unit % % % % T/HA BU/ACRating Date Aug-19-02 Aug-19-02 Aug-19-02 Aug-19-02 Oct-8-02 Oct-8-02Weed Stage 20+ LF 20+ LF 4-6 LFWeed Density, Unit 41 /M2 6 /M2 1.5 /M2Trt-Eval Interval 70 DAT 70 DAT 70 DAT 70 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 14 15 16 17 50 51

1 Weedy check 0 g 0 f 0 d 0 d 0.60 e 9.5 e2 Weed free check 100 a 100 a 100 a 100 a 4.91 abc 78.2 abc3 AE F130360 70 WG 8.75 G A/HA POST A 10 fg 0 f 50 c 96 b 3.39 bcd 54.0 bcd


4 AE F130360 70 WG 17.5 G A/HA POST A 13 f 0 f 99 a 84 c 3.95 bcd 62.9 bcdMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

5 AE F130360 70 WG 35 G A/HA POST A 25 e 50 d 99 a 99 ab 5.32 ab 84.8 abMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

6 AE F130360 70 WG 70 G A/HA POST A 69 c 70 c 99 a 99 ab 3.22 cd 51.4 cdMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

7 AE F130360 70 WG 105 G A/HA POST A 80 b 65 c 99 a 99 ab 3.51 bcd 56.0 bcdMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

8 AE F130360 70 WG 140 G A/HA POST A 94 a 81 b 99 a 99 ab 4.66 a-d 74.3 a-dMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

9 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 48 d 39 e 0 d 99 ab 2.80 d 44.7 dAgral 90 SO 0.200 % V/V POST A

10 AE F130360 70 WG 70 G A/HA POST A 99 a 93 a 98 a 96 b 6.15 a 98.0 aprosulfuron 75 DF 10 G A/HA POST Adicamba 480 SL 140 G A/HA POST AMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

11 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 99 a 90 ab 63 b 99 ab 4.34 a-d 69.2 a-dprosulfuron 75 DF 10 G A/HA POST Adicamba 480 SL 140 G A/HA POST AAgral 90 SO 0.200 % V/V POST A



Trial Comments

The application of AE F130360 and nicosulfuron/rimsulfuron resulted in significant visual crop injury 7 and 14 days after application, but the crop recovered with noinjury observed 28 days after application.

The minimum rate of AE F130360 required to provide 80 % or greater early season control of the following weeds is in brackets: velvetleaf (ABUTH) (8.75 g/ha),common ragweed (AMBEL) ( 35 g/ha), lamb's-quarters (CHEAL) (35 g/ha), lady's thumb (POLPE) (70 g/ha), Eastern black nightshade (SOLPT) (8.75 g/ha) andgreen foxtail (SETVI) (8.75 g/ha).

The minimum rate of AE F130360 required to provide 80 % or greater full season control of the following weeds is in brackets: velvetleaf (ABUTH) (> 140 g/ha),common ragweed (AMBEL) ( 35 g/ha), lamb's-quarters (CHEAL) (105 g/ha), lady's thumb (POLPE) (140 g/ha), Eastern black nightshade (SOLPT) (17.5 g/ha) andgreen foxtail (SETVI) (35 g/ha).

AE F130360 (70 g/ha) and nicosulfuron/rimsulfuron (25 g/ha) provided statistically equivalent full season control of green foxtail. AE F130360 (70 g/ha) providedbetter full season control of common ragweed, lamb's-quarters, lady's thumb and Eastern black nightshade than nicosulfuron/rimsulfuron (25 g/ha).Nicosulfuron/rimsulfuron (25 g/ha) provided better full season control of velvetleaf than AE F130360 (70 g/ha).

The tankmix of AE F130360 plus prosulfuron plus dicamba and the tankmix of nicosulfuron/rimsulfuron plus prosulfuron plus dicamba provided statisticallyequivalent full season control of velvetleaf, common ragweed, lamb's-quarters, lady's thumb and green foxtail. The tankmix of AE F130360 plus prosulfuron plusdicamba provided better control of Eastern black nightshade.

Corn yields were very low and variable in this experiment due to the dry conditions in 2002, therefore it is difficult to relate corn yields with the level of weed control.

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COMPARISON OF BROMOXYNIL FORMULATIONS FOR BROADLEAF WEED CONTROL IN CORN I (FC02C3)


CROP: ZEAMX, CORN, FIELD (LIBERTY LINK) (37H26). Planted: May-21-02, 75600 SEEDS/HA, 5 CM Deep, 76 CM Row Width. Emerged On: May-31-02.Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: RC - Range C5.

Site Description: Soil Texture: LOAM. %OM: 6.23 %Sand: 44.4 %Silt: 33.6 %Clay: 22 pH: 7.6

APPLICATION DESCRIPTION STAGE AT APPLICATIONApplication: A Application: ADate : Jun-12-02 Crop 1 ZEAMX 5 LFTime of Day: 16:00 Height : 22 CMMethod :Timing : POST Weed 1 ABUTH C-3 LFPlacement : Stg.Scale: 1-5 CMAir Temp. : 28.2 C Density : 20 /M2% Humidity : 56 Weed 2 AMARE 2-4 LFWind Speed : 10 KM/H Stg.Scale: 1-3 CMDew Present: N Density : 6.5 /M2Soil Moist.: AT DEPTH Weed 3 AMBEL 4-8 LFCloud Cover: 70% Stg.Scale: 2-10 CMEquipment : CO2 Backp Density : 2 /M2Pressure : 207 kPa Weed 4 CHEAL 2-20+ LFNozzle Type: FLAT FAN Stg.Scale: 0.5-10 CMNozzle Size: XR8002 Density : 73 /M2Noz.Spacing: 50 CM Weed 5 POLPE 1-9 LFBoom Length: 2 M Stg.Scale: 0.5-5 CMBoom Height: 48 CM Density : 12 /M2Carrier : WATER Weed 6 SETVI SPK-4 LFAppl.Volume: 200 L/ha Stg.Scale: 1-3 CMPropellant : CO2 Density : 21 /M2

Weed Code ABUTH AMARE AMBEL CHEALCrop Code ZEAMX ZEAMX ZEAMXRating Data Type INJURY INJURY INJURY CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % % %Rating Date Jun-19-02 Jun-19-02 Jul-10-02 Jul-10-02 Jul-10-02 Jul-10-02 Jul-10-02Crop Stage 6-7 LF 6-7 LF 12-14 LFCrop Stage Scale 60 CM 60 CM 1-1.3 MWeed Stage 2-6 LF 8-20+ LF 6-20+ LF 2-20+ LFWeed Density, Unit 14 /M2 7 /M2 2 /M2 62 /M2Footnote Number 1 2Trt-Eval Interval 7 DAT 7 DAT 28 DAT 28 DAT 28 DAT 28 DAT 28 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 6 7

1 Weedy check 0 e 0 f 0 a 0 d 0 d 0 c 0 e2 NAI 029 235 EC 280 G A/HA post A 2 c 1 e 0 a 94 c 97 c 98 b 99 ab

dicamba 480 SL 140 G A/HA post A3 bromoxynil 280 EC 280 G A/HA post A 2 c 1 e 0 a 95 bc 97 bc 99 ab 97 cd

dicamba 480 SL 140 G A/HA post A4 NAI 029 235 EC 280 G A/HA post A 5 b 2 cd 0 a 95 bc 99 a 99 a 98 bc


5 bromoxynil 280 EC 280 G A/HA post A 7 a 3 b 0 a 96 ab 99 ab 99 a 97 dnicosulfuron/rimsulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

6 NAI 029 235 EC 280 G A/HA post A 5 b 2 de 0 a 96 abc 99 ab 99 a 98 abnicosulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

7 bromoxynil 280 EC 280 G A/HA post A 8 a 2 bc 0 a 95 bc 99 ab 99 a 97 dnicosulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

8 NAI 029 235 EC 140 G A/HA post A 1 d 2 bcd 0 a 97 a 99 a 99 a 99 abnicosulfuron/rimsulfuron 75 DF 25 G A/HA post Aatrazine 90 WG 500 G A/HA post AAgral 90 SO 0.200 % V/V post A

9 bromoxynil 280 EC 140 G A/HA post A 2 c 5 a 0 a 97 ab 99 a 99 a 99 anicosulfuron/rimsulfuron 75 DF 25 G A/HA post Aatrazine 90 WG 500 G A/HA post AAgral 90 SO 0.200 % V/V post A



Column 1 Footnote: NECROTIC STRIPS ON LEAVES 3-5Column 2 Footnote: CHLROTIC PATCHES AROUND WHORL

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COMPARISON OF BROMOXYNIL FORMULATIONS FOR BROADLEAF WEED CONTROL IN CORN I


Weed Code POLPE SETVI ABUTH AMARE AMBEL CHEAL POLPECrop Code ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % % %Rating Date Jul-10-02 Jul-10-02 Jul-31-02 Jul-31-02 Jul-31-02 Jul-31-02 Jul-31-02Crop Stage TASL/SLKCrop Stage Scale 1.6-1.9MWeed Stage 6-9 LF 4-8 LF 5-6 LF 8-20+ LF 20+ LF 6-20+ LF 20+ LFWeed Density, Unit 12 /M2 14 /M2 12 /M2 4 /M2 1 /M2 61 /M2 7 /M2Trt-Eval Interval 28 DAT 28 DAT 56 DAT 56 DAT 56 DAT 56 DAT 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 8 9 10 11 12 13 141 Weedy check 0 d 0 c 0 e 0 c 0 c 0 e 0 c2 NAI 029 235 EC 280 G A/HA post A 96 c 0 c 96 ab 97 b 97 b 98 ab 97 b

dicamba 480 SL 140 G A/HA post A3 bromoxynil 280 EC 280 G A/HA post A 97 bc 0 c 96 a 97 b 98 ab 97 bc 97 b

dicamba 480 SL 140 G A/HA post A4 NAI 029 235 EC 280 G A/HA post A 99 a 97 a 92 d 98 a 98 ab 98 b 99 a


5 bromoxynil 280 EC 280 G A/HA post A 98 ab 95 ab 95 abc 98 ab 98 ab 96 d 99 anicosulfuron/rimsulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

6 NAI 029 235 EC 280 G A/HA post A 99 a 96 ab 93 cd 98 a 99 a 98 ab 99 anicosulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

7 bromoxynil 280 EC 280 G A/HA post A 99 a 97 ab 94 bcd 98 a 99 a 96 cd 99 anicosulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

8 NAI 029 235 EC 140 G A/HA post A 99 a 96 ab 95 abc 98 ab 99 a 98 ab 99 anicosulfuron/rimsulfuron 75 DF 25 G A/HA post Aatrazine 90 WG 500 G A/HA post AAgral 90 SO 0.200 % V/V post A

9 bromoxynil 280 EC 140 G A/HA post A 99 a 94 b 96 ab 99 a 99 a 99 a 99 anicosulfuron/rimsulfuron 75 DF 25 G A/HA post Aatrazine 90 WG 500 G A/HA post AAgral 90 SO 0.200 % V/V post A

LSD (P=.05) 1.7 2.9 2.2 1.3 1.1 1.0 0.9Standard Deviation 1.1 2.0 1.5 0.9 0.8 0.7 0.6CV 1.3 3.13 1.75 1.04 0.88 0.78 0.7Means followed by same letter do not significantly differ (P=.05, LSD)

Weed Code SETVICrop Code ZEAMX ZEAMXRating Data Type CONTROL YIELD YIELDRating Unit % T/HA BU/ACRating Date Jul-31-02 Oct-9-02 Oct-9-02Weed Stage 7-20+ LFWeed Density, Unit 19 /M2Trt-Eval Interval 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 15 18 191 Weedy check 0 c 0.35 b 5.6 b2 NAI 029 235 EC 280 G A/HA post A 0 c 3.43 a 54.6 a

dicamba 480 SL 140 G A/HA post A3 bromoxynil 280 EC 280 G A/HA post A 20 b 3.32 a 53.0 a

dicamba 480 SL 140 G A/HA post A4 NAI 029 235 EC 280 G A/HA post A 94 a 2.85 a 45.4 a


5 bromoxynil 280 EC 280 G A/HA post A 93 a 2.74 a 43.6 anicosulfuron/rimsulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

6 NAI 029 235 EC 280 G A/HA post A 95 a 2.96 a 47.1 anicosulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

7 bromoxynil 280 EC 280 G A/HA post A 94 a 2.98 a 47.5 anicosulfuron 75 DF 25 G A/HA post AAgral 90 SO 0.200 % V/V post A

8 NAI 029 235 EC 140 G A/HA post A 92 a 2.95 a 46.9 anicosulfuron/rimsulfuron 75 DF 25 G A/HA post Aatrazine 90 WG 500 G A/HA post AAgral 90 SO 0.200 % V/V post A

9 bromoxynil 280 EC 140 G A/HA post A 89 a 3.56 a 56.8 anicosulfuron/rimsulfuron 75 DF 25 G A/HA post Aatrazine 90 WG 500 G A/HA post AAgral 90 SO 0.200 % V/V post A

LSD (P=.05) 12.4 0.834 13.28Standard Deviation 8.5 0.571 9.10CV 13.32 20.45 20.45Means followed by same letter do not significantly differ (P=.05, LSD)

-149-

COMPARISON OF BROMOXYNIL FORMULATIONS FOR BROADLEAF WEED CONTROL IN CORN I


Trial Comments

There was no commercially significant injury in corn 7 and 28 DAT with the postemergence herbicide treatments evaluated. There was a trend to slightly morevisual crop injury 7 DAT with the 280 EC formulation than the 235 EC formulation. The crop recovered quickly with no injury observed 28 DAT.

Generally, the two formulations of bromoxynil provided equivalent weed control.

The tankmixes of bromoxynil (235 EC or 280 EC) plus dicamba provided excellent full season broadleaf (velvetleaf (ABUTH), redroot pigweed (AMARE), commonragweed (AMBEL), lamb's-quarters (CHEAL) and lady's thumb (POLPE)) weed control and poor control of green foxtail (SETVI). There were no statisticaldifferences between the two formulations of bromoxynil in respect to broadleaf weed control.

The tankmixes of bromoxynil (235 EC or 280 EC) plus nicosulfuron/rimsulfuron provided excellent full season broadleaf and grass weed control. There were noappreciable differences between the two formulations of bromoxynil in respect to weed control.

The tankmixes of bromoxynil (235 EC or 280 EC) plus nicosulfuron provided excellent full season broadleaf and grass weed control. There were no appreciabledifferences between the two formulations of bromoxynil in respect to weed control.

The tankmixes of bromoxynil (235 EC or 280 EC) plus nicosulfuron/rimsulfuron plus atrazine provided excellent full season broadleaf and grass weed control.There were no appreciable differences between the two formulations of bromoxynil in respect to weed control.

Corn yields were very low and variable in this experiment due to the dry conditions in 2002. There was no statistical difference in yield among the herbicidetreatments evaluated.

-150-

BROAD SPECTRUM WEED CONTROL IN CORN WITH ATRAZINE/2,4-D TANKMIXES I (FC02C8)


CROP: ZEAMX, CORN, FIELD (LIBERTY LINK) (37H26). Planted: May-21-02, 75600 SEEDS/HA, 5 CM Deep, 76 CM Row Width. Emerged On: May-31-02.Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: RC - Range C6.

Site Description: Soil Texture: LOAM. %OM: 5.73 %Sand: 40.9 %Silt: 37.2 %Clay: 21.9 pH: 7.6

APPLICATION DESCRIPTION STAGE AT APPLICATIONApplication: A Application: ADate : Jun-8-02 Crop 1 ZEAMX 3 LFTime of Day: 10:45 Height : 20 CMMethod :Timing : POST Weed 1 ABUTH C-2 LFPlacement : Stg.Scale: 0.5-4 CMAir Temp. : 23.8 C Density : 7 /M2% Humidity : 64 Weed 2 AMARE 2-3 LFWind Speed : 6 KM/H Stg.Scale: 1 CMDew Present: N Density : 1 /M2Soil Moist.: AT DEPTH Weed 3 AMBEL C-6 LFCloud Cover: 10% Stg.Scale: 0.5-3 CMEquipment : CO2 Backp Density : 3 /M2Pressure : 207 kPa Weed 4 CHEAL C-6 LFNozzle Type: FLAT FAN Stg.Scale: 0.5-3 CMNozzle Size: XR8002 Density : 19 /M2Noz.Spacing: 50 CM Weed 5 POLPE C-6 LFBoom Length: 2 M Stg.Scale: 0.5-7 CMBoom Height: 48 CM Density : 17 /M2Carrier : WATER Weed 6 SOLPT 1-2 LFAppl.Volume: 200 L/ha Stg.Scale: 0.5 CMPropellant : CO2 Density : 1 /M2 Weed 7 SETVI Stg.Scale: Density : 0 /M2

Weed Code ABUTH AMARE AMBEL CHEALCrop Code ZEAMX ZEAMX ZEAMXRating Data Type INJURY INJURY INJURY CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % % %Rating Date Jun-19-02 Jun-19-02 Jul-10-02 Jul-10-02 Jul-10-02 Jul-10-02 Jul-10-02Crop Stage 6 LF 6 LF 12-14 LFCrop Stage Scale 35 CM 35 CM 1-1.3 MWeed Stage 1-8 LF 20+ LF 10-20+ L 8-20+ LFWeed Density, Unit 11 /M2 5.5 /M2 2 /M2 23 /M2Footnote Number 1 2Trt-Eval Interval 7 DAT 7 DAT 28 DAT 28 DAT 28 DAT 28 DAT 28 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 6 7

1 Untreated Check 0 e 0 b 0 a 0 c 0 c 0 d 0 e2 pendimethalin 400 EC 1680 G A/HA POST A 0 de 0 b 0 a 97 a 43 b 46 c 81 b3 AE F130360 70 WG 70 G A/HA POST A 4 a 0 b 0 a 94 a 96 a 97 a 94 a


4 atrazine/2,4-D 390 SU 936 G A/HA POST A 0 e 0 b 0 a 93 a 99 a 99 a 99 a5 pendimethalin 400 EC 1680 G A/HA POST A 1 bcd 3 a 0 a 97 a 99 a 99 a 99 a

atrazine/2,4-D 390 SU 936 G A/HA POST A6 AE F130360 70 WG 70 G A/HA POST A 5 a 0 b 0 a 96 a 99 a 99 a 99 a

atrazine/2,4-D 390 SU 936 G A/HA POST AMSO SO 1.75 L/HA POST AUAN 28 % SO 2.50 L/HA POST A

7 rimsulfuron 25 DF 15 G A/HA POST A 1 bc 0 b 0 a 94 a 98 a 38 c 39 dSuper Spreader Sticker SO 0.200 % V/V POST A

8 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 1 cde 0 b 0 a 92 a 98 a 55 bc 58 cSuper Spreader Sticker SO 0.200 % V/V POST A

9 nicosulfuron 75 DF 25 G A/HA POST A 2 b 0 b 0 a 76 b 99 a 76 ab 73 bSuper Spreader Sticker SO 0.200 % V/V POST A

10 AE F130360 70 WG 70 G A/HA POST A 4 a 0 b 0 a 95 a 98 a 84 a 61 cSuper Spreader Sticker SO 0.200 % V/V POST A



Column 1 Footnote: CHLOROTIC/NECTROTIC PATCH AROUND WHORL (YELLOW FLASH)Column 2 Footnote: SECOND AND THIRD LEAVES PATCHY CELL MEMBRANE DISRUPTION (LOOKS WATER SOAKED)

-151-

BROAD SPECTRUM WEED CONTROL IN CORN WITH ATRAZINE/2,4-D TANKMIXES I


Weed Code POLPE SOLPT SETVI ABUTH AMARE AMBELCrop Code ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Jul-10-02 Jul-10-02 Jul-10-02 Jul-29-02 Jul-29-02 Jul-29-02Crop Stage TASL/SLKCrop Stage Scale 1.5-1.7MWeed Stage 7-20+ LF 2-4 LF 7 LF 8-9 LF 6-20+ LF 20+ LFWeed Density, Unit 6.5 /M2 2 /M2 0.5 /M2 8 /M2 3 /M2 1 /M2Trt-Eval Interval 28 DAT 28 DAT 28 DAT 56 DAT 56 DAT 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 8 9 10 11 12 131 Untreated Check 0 e 0 b 0 d 0 d 0 d 0 d2 pendimethalin 400 EC 1680 G A/HA POST A 8 e 99 a 63 bc 96 a 48 c 58 bc3 AE F130360 70 WG 70 G A/HA POST A 97 ab 99 a 90 a 92 a 97 a 98 a


4 atrazine/2,4-D 390 SU 936 G A/HA POST A 92 ab 99 a 43 c 92 a 99 a 99 a5 pendimethalin 400 EC 1680 G A/HA POST A 95 ab 99 a 73 ab 97 a 99 a 98 a

atrazine/2,4-D 390 SU 936 G A/HA POST A6 AE F130360 70 WG 70 G A/HA POST A 99 a 99 a 90 a 90 ab 99 a 99 a


7 rimsulfuron 25 DF 15 G A/HA POST A 55 d 0 b 85 ab 89 ab 85 b 43 cSuper Spreader Sticker SO 0.200 % V/V POST A

8 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 75 c 0 b 92 a 80 b 96 a 40 cSuper Spreader Sticker SO 0.200 % V/V POST A

9 nicosulfuron 75 DF 25 G A/HA POST A 83 bc 0 b 90 a 45 c 96 a 78 abSuper Spreader Sticker SO 0.200 % V/V POST A

10 AE F130360 70 WG 70 G A/HA POST A 55 d 99 a 85 ab 90 ab 98 a 82 abSuper Spreader Sticker SO 0.200 % V/V POST A


Weed Code CHEAL POLPE SOLPT SETVICrop Code ZEAMX ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL YIELD YIELDRating Unit % % % % T/HA BU/ACRating Date Jul-29-02 Jul-29-02 Jul-29-02 Jul-29-02 Oct-9-02 Oct-9-02Weed Stage 8-20+ LF 20+ LF 6 LF 5 LFWeed Density, Unit 28 /M2 7 /M2 2 /M2 3 /M2Trt-Eval Interval 56 DAT 56 DAT 56 DAT 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 14 15 16 17 20 211 Untreated Check 0 e 0 e 0 b 0 f 0.69 c 10.9 c2 pendimethalin 400 EC 1680 G A/HA POST A 86 b 25 d 99 a 53 e 1.92 b 30.5 b3 AE F130360 70 WG 70 G A/HA POST A 93 ab 96 a 99 a 90 ab 2.66 a 42.3 a


4 atrazine/2,4-D 390 SU 936 G A/HA POST A 99 a 90 a 99 a 74 cd 2.67 a 42.5 a5 pendimethalin 400 EC 1680 G A/HA POST A 99 a 94 a 99 a 80 bc 2.95 a 47.1 a

atrazine/2,4-D 390 SU 936 G A/HA POST A6 AE F130360 70 WG 70 G A/HA POST A 99 a 99 a 99 a 94 a 3.13 a 49.9 a


7 rimsulfuron 25 DF 15 G A/HA POST A 33 d 45 c 0 b 97 a 1.40 b 22.3 bSuper Spreader Sticker SO 0.200 % V/V POST A

8 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 40 cd 90 a 0 b 97 a 1.52 b 24.2 bSuper Spreader Sticker SO 0.200 % V/V POST A

9 nicosulfuron 75 DF 25 G A/HA POST A 40 cd 53 bc 0 b 97 a 1.85 b 29.4 bSuper Spreader Sticker SO 0.200 % V/V POST A

10 AE F130360 70 WG 70 G A/HA POST A 43 c 65 b 99 a 66 d 1.51 b 24.1 bSuper Spreader Sticker SO 0.200 % V/V POST A


Trial CommentsThere was no commercially significant injury in corn 7 and 28 DAT with the postemergence herbicide treatments evaluated. The postemergence application of pendimethalin provided excellent full season control of velvetleaf (ABUTH) and Eastern black nightshade (SOLPT), good control of lamb's-quarters (CHEAL) and poor control of redroot pigweed (AMARE), common ragweed (AMBEL), lady's thumb (POLPE) and green foxtail (SETVI). The postemergenceapplication of AE F130360 provided excellent full season control of all the weeds evaluated in this study. The postemergence application of atrazine/2,4-D provided excellentbroadleaf weed control and fair control of green foxtail. The tankmix of pendimethalin plus atrazine/2,4-D provided excellent broadleaf weed control and good control of greenfoxtail. The tankmix of AE F130260 plus atrazine/2,4-D provided excellent full season control of all the weeds evaluated in this study. The postemergence application of eitherrimsulfuron or nicosulfuron/rimsulfuron plus the adjuvant Super Spreader Sticker were weak on common ragweed, lamb's-quarters, lady's thumb and Eastern black nightshade. The postemergence application of nicosulfuron plus the adjuvant Super Spreader Sticker was weak on velvetleaf, common ragweed, lamb's-quarters, lady's thumb and Easternblack nightshade. The postemergence application of AE F130360 plus the adjuvant Super Spreader Sticker provided poorer control of lamb's-quarters, lady's thumb and greenfoxtail than when applied with MSO and UAN 28%. Corn yields were very low and variable in this experiment due to the dry conditions in 2002. The yields were closely relatedto the level of weed control provided by the herbicide treatments evaluated.

-152-

THE EFFECT OF FOLIAR FERTILIZERS ON HERBICIDE PERFORMANCE IN CORN I (FC02C9)


CROP: ZEAMX, CORN, FIELD (ROUNDUP READY) (DKC 53-33). Planted: May-21-02, 75600 SEEDS/HA, 5 CM Deep, 76 CM Row Width. EmergedOn: May-31-02.Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: RC - Range B8.Site Description: Soil Texture: LOAM. %OM: 5.64 %Sand: 43.3 %Silt: 33.6 %Clay: 23.1 pH: 6.6APPLICATION DESCRIPTION STAGE AT APPLICATIONApplication: A Application: ADate : Jun-18-02 Crop 1 ZEAMX 5-6 LFTime of Day: 09:45 Height : 35 CMMethod :Timing : POST Weed 1 ABUTH C-5 LFPlacement : Stg.Scale: 1-8 CMAir Temp. : 25.2 C Density : 7 /M2% Humidity : 83 Weed 2 AMBEL 2-8 LFWind Speed : 0.5 KM/H Stg.Scale: 1-15 CMDew Present: Y Density : 9 /M2Soil Moist.: MOIST Weed 3 CHEAL 4-20+ LFCloud Cover: 5% Stg.Scale: 1-15 CMEquipment : CO2 Backp Density : 6 /M2Pressure : 207 kPa Weed 4 POLCO 2-3 LFNozzle Type: FLAT FAN Stg.Scale: 2-4 CMNozzle Size: XR8002 Density : 1 /M2Noz.Spacing: 50 CM Weed 5 POLPE 4 LFBoom Length: 2 M Stg.Scale: 5 CMBoom Height: 48 CM Density : 0.5 /M2Carrier : WATER Weed 6 SETVI 3 LFAppl.Volume: 200 L/ha Stg.Scale: 5-6 CMPropellant : CO2 Density : 1 /M2

Weed Code ABUTH AMBEL CHEAL POLCOCrop Code ZEAMX ZEAMXRating Data Type INJURY INJURY CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Jun-25-02 Jul-16-02 Jul-16-02 Jul-16-02 Jul-16-02 Jul-16-02Crop Stage 7-8 LF 12-14 LFCrop Stage Scale 70 CM 0.7-1.5MWeed Stage 5-8 LF 8-20+ LF 8-20+ LF 12-20+ LWeed Density, Unit 5.5 /M2 11 /M2 12 /M2 4 /M2Footnote Number 1Trt-Eval Interval 7 DAT 28 DAT 28 DAT 28 DAT 28 DAT 28 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 61 Untreated Check 0 d 0 a 0 e 0 e 0 d 0 e2 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 1 c 0 a 92 abc 86 d 97 bc 35 d

flumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA POST AAgral 90 SO 0.250 % V/V POST A

3 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 3 a 0 a 96 a 90 cd 97 bc 69 bcflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA POST ACrop Booster SO 2.000 L/HA POST AAgral 90 SO 0.250 % V/V POST A

4 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 3 b 0 a 94 ab 90 cd 98 ab 70 bcflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA POST A0S01 - C SO 2.000 L/HA POST AAgral 90 SO 0.250 % V/V POST A

5 nicosulfuron 75 DF 25 G A/HA POST A 0 d 0 a 85 d 92 bc 96 bc 58 cprosulfuron 75 DF 10 G A/HA POST Adicamba 480 SL 140 G A/HA POST AAgral 90 SO 0.200 % V/V POST A

6 nicosulfuron 75 DF 25 G A/HA POST A 0 d 0 a 89 bcd 89 cd 96 c 75 bcprosulfuron 75 DF 10 G A/HA POST Adicamba 480 SL 140 G A/HA POST ACrop Booster SO 2.000 L/HA POST AAgral 90 SO 0.200 % V/V POST A

7 nicosulfuron 75 DF 25 G A/HA POST A 0 d 0 a 91 a-d 95 ab 97 bc 82 abprosulfuron 75 DF 10 G A/HA POST Adicamba 480 SL 140 G A/HA POST A0S01 - C SO 2.000 L/HA POST AAgral 90 SO 0.250 % V/V POST A

8 nicosulfuron 75 DF 25 G A/HA POST A 0 d 0 a 86 cd 96 ab 97 bc 97 adicamba/diflufenzopyr 70 WG 200 G A/HA POST AAgral 90 SO 0.250 % V/V POST AUAN 28 % SO 1.25 % V/V POST A

9 nicosulfuron 75 DF 25 G A/HA POST A 0 d 0 a 92 abc 98 a 98 ab 96 adicamba/diflufenzopyr 70 WG 200 G A/HA POST ACrop Booster SO 2.000 L/HA POST AAgral 90 SO 0.250 % V/V POST A

10 nicosulfuron 75 DF 25 G A/HA POST A 0 d 0 a 95 ab 99 a 99 a 96 adicamba/diflufenzopyr 70 WG 200 G A/HA POST A0S01 - C SO 2.000 L/HA POST AAgral 90 SO 0.250 % V/V POST A


Column 1 Footnote: CHLOROTIC SPECKLES ON LEAVES 6-7

-153-

THE EFFECT OF FOLIAR FERTILIZERS ON HERBICIDE PERFORMANCE IN CORN I


Weed Code POLPE SETVI ABUTH AMBEL CHEAL POLCORating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % %Rating Date Jul-16-02 Jul-16-02 Aug-15-02 Aug-15-02 Aug-15-02 Aug-15-02Weed Stage 20+ LF 4-14 LF 4-20+ LF 20+ LF 20+ LF 20+ LFWeed Density, Unit 0.5 /M2 3 /M2 5 /M2 9 /M2 8 /M2 1 /M2Footnote NumberTrt-Eval Interval 28 DAT 28 DAT 56 DAT 56 DAT 56 DAT 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 7 8 9 10 11 12

1 Untreated Check 0 d 0 d 0 e 0 e 0 b 0 g2 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 63 c 89 abc 76 cd 86 cd 99 a 33 f


3 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 88 ab 93 ab 88 ab 86 cd 99 a 65 deflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA POST ACrop Booster SO 2.000 L/HA POST AAgral 90 SO 0.250 % V/V POST A

4 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 74 bc 91 abc 93 a 83 d 99 a 68 cdeflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA POST A0S01 - C SO 2.000 L/HA POST AAgral 90 SO 0.250 % V/V POST A

5 nicosulfuron 75 DF 25 G A/HA POST A 88 ab 85 c 73 d 84 d 99 a 59 eprosulfuron 75 DF 10 G A/HA POST Adicamba 480 SL 140 G A/HA POST AAgral 90 SO 0.200 % V/V POST A

6 nicosulfuron 75 DF 25 G A/HA POST A 88 ab 93 ab 83 bc 90 bc 99 a 81 bcprosulfuron 75 DF 10 G A/HA POST Adicamba 480 SL 140 G A/HA POST ACrop Booster SO 2.000 L/HA POST AAgral 90 SO 0.200 % V/V POST A

7 nicosulfuron 75 DF 25 G A/HA POST A 95 a 92 ab 89 ab 92 b 99 a 74 cdprosulfuron 75 DF 10 G A/HA POST Adicamba 480 SL 140 G A/HA POST A0S01 - C SO 2.000 L/HA POST AAgral 90 SO 0.250 % V/V POST A

8 nicosulfuron 75 DF 25 G A/HA POST A 96 a 86 bc 87 ab 99 a 99 a 97 adicamba/diflufenzopyr 70 WG 200 G A/HA POST AAgral 90 SO 0.250 % V/V POST AUAN 28 % SO 1.25 % V/V POST A

9 nicosulfuron 75 DF 25 G A/HA POST A 98 a 90 abc 88 ab 98 a 99 a 94 abdicamba/diflufenzopyr 70 WG 200 G A/HA POST ACrop Booster SO 2.000 L/HA POST AAgral 90 SO 0.250 % V/V POST A

10 nicosulfuron 75 DF 25 G A/HA POST A 98 a 96 a 88 ab 99 a 99 a 96 adicamba/diflufenzopyr 70 WG 200 G A/HA POST A0S01 - C SO 2.000 L/HA POST AAgral 90 SO 0.250 % V/V POST A



-154-

THE EFFECT OF FOLIAR FERTILIZERS ON HERBICIDE PERFORMANCE IN CORN I


Weed Code POLPE SETVICrop Code ZEAMX ZEAMXRating Data Type CONTROL CONTROL YIELD YIELDRating Unit % % T/HA BU/ACRating Date Aug-15-02 Aug-15-02 Oct-8-02 Oct-8-02Weed Stage 6-12 LFWeed Density, Unit 2 /M2Trt-Eval Interval 56 DAT 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 13 14 17 18

1 Untreated Check 0 d 0 d 1.29 d 20.5 d2 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 51 c 91 bc 3.10 bc 49.3 bc


3 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 68 bc 89 c 3.20 abc 51.0 abcflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA POST ACrop Booster SO 2.000 L/HA POST AAgral 90 SO 0.250 % V/V POST A

4 nicosulfuron/rimsulfuron 75 DF 25 G A/HA POST A 48 c 91 c 3.29 abc 52.4 abcflumetsulam/clopyralid/2,4-D 84.3 WG 236 G A/HA POST A0S01 - C SO 2.000 L/HA POST AAgral 90 SO 0.250 % V/V POST A

5 nicosulfuron 75 DF 25 G A/HA POST A 78 ab 88 c 3.05 c 48.6 cprosulfuron 75 DF 10 G A/HA POST Adicamba 480 SL 140 G A/HA POST AAgral 90 SO 0.200 % V/V POST A

6 nicosulfuron 75 DF 25 G A/HA POST A 89 ab 96 a 3.89 ab 61.9 abprosulfuron 75 DF 10 G A/HA POST Adicamba 480 SL 140 G A/HA POST ACrop Booster SO 2.000 L/HA POST AAgral 90 SO 0.200 % V/V POST A

7 nicosulfuron 75 DF 25 G A/HA POST A 76 ab 95 ab 3.60 abc 57.3 abcprosulfuron 75 DF 10 G A/HA POST Adicamba 480 SL 140 G A/HA POST A0S01 - C SO 2.000 L/HA POST AAgral 90 SO 0.250 % V/V POST A

8 nicosulfuron 75 DF 25 G A/HA POST A 98 a 95 ab 3.29 abc 52.4 abcdicamba/diflufenzopyr 70 WG 200 G A/HA POST AAgral 90 SO 0.250 % V/V POST AUAN 28 % SO 1.25 % V/V POST A

9 nicosulfuron 75 DF 25 G A/HA POST A 98 a 95 ab 3.96 a 63.1 adicamba/diflufenzopyr 70 WG 200 G A/HA POST ACrop Booster SO 2.000 L/HA POST AAgral 90 SO 0.250 % V/V POST A

10 nicosulfuron 75 DF 25 G A/HA POST A 98 a 97 a 3.50 abc 55.8 abcdicamba/diflufenzopyr 70 WG 200 G A/HA POST A0S01 - C SO 2.000 L/HA POST AAgral 90 SO 0.250 % V/V POST A

LSD (P=.05) 22.8 4.1 0.811 12.92Standard Deviation 15.7 2.8 0.559 8.90CV 22.41 3.36 17.37 17.37


Trial Comments

There was no commercially significant visual injury in corn (ZEAMX) with the postemergence herbicide tankmixes evaluated. The addition of Crop Booster and 0S01 - C tonicosulfuron/rimsulfuron plus flumetsulam/clopyralid/2,4-D resulted in higher visual crop injury 7 DAT but the crop recovered quickly with no injury observed 28 DAT.

The addition of Crop Booster or 0S01 - C to nicosulfuron/rimsulfuron plus flumetsulam/clopyralid/2,4-D improved the early season control of wild buckwheat (POLCO) and lady's thumb (POLPE) and the full season control of velvetleaf (ABUTH) and wild buckwheat (POLCO).

The addition of Crop Booster or 0S01 - C to nicosulfuron plus prosulfuron plus dicamba improved the early season control of wild buckwheat (POLCO) and green foxtail (SETVI)and the full season control of velvetleaf (ABUTH), common ragweed (AMBEL), wild buckwheat (POLCO) and green foxtail (SETVI).

The addition of Crop Booster or 0S01 - C to nicosulfuron plus dicamba/diflufenzopyr improved the early season control of velvetleaf (ABUTH) and green foxtail (SETVI).

The corn yields were extremely low and variable at Ridgetown, ON in 2002 due to the dry conditions. The addition of CropBooster or 0S01 - C to nicosulfuron/rimsulfuron plusflumetsulam/clopyralid/2,4-D or nicosulfuron plus dicamba/diflufenzopyr did not affect corn yields. There was an increase in corn yield with the addition of Crop Booster tonicosulfuron plus prosulfuron plus dicamba. This research will have to be repeated over many sites to confirm this yield response.

-155-

THE EFFECT OF FOLIAR FERTILIZERS ON HERBICIDE PERFORMANCE IN CORN III (FC02C10)


CROP: ZEAMX, CORN, FIELD (ROUNDUP READY) (DKC 53-33). Planted: May-21-02, 75600 SEEDS/HA, 5 CM Deep, 76 CM Row Width. EmergedOn: May-31-02.Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 40 M. Expt. Location: RC - Range C7.

Site Description: Soil Texture: LOAM. %OM: 5.35 %Sand: 41.5 %Silt: 37 %Clay: 20.5 pH: 7.3

APPLICATION DESCRIPTION STAGE AT APPLICATIONApplication: A Application: ADate : Jun-18-02 Crop 1 ZEAMX 5-6 LFTime of Day: 10:00 Height : 25 CMMethod :Timing : POST Weed 1 ABUTH C-4 LFPlacement : Stg.Scale: 1-6 CMAir Temp. : 25.2 C Density : 10 /M2% Humidity : 63 Weed 2 AMARE 1-8 LFWind Speed : 0.5 KM/H Stg.Scale: 1-4 CMDew Present: Y Density : 13 /M2Soil Moist.: MOIST Weed 3 AMBEL C-20+ LFCloud Cover: 5% Stg.Scale: 1-15 CMEquipment : CO2 Backp Density : 58 /M2Pressure : 207 kPa Weed 4 CHEAL 2-20+ LFNozzle Type: FLAT FAN Stg.Scale: 1-13 CMNozzle Size: XR8002 Density : 42 /M2Noz.Spacing: 50 CM Weed 5 POLPE 2-14 LFBoom Length: 2 M Stg.Scale: 1-12 CMBoom Height: 48 CM Density : 25 /M2Carrier : WATER Weed 6 ECHCG 2-6 LFAppl.Volume: 200 L/ha Stg.Scale: 2-16 CMPropellant : CO2 Density : 22 /M2

Weed Code ABUTH AMARE AMBEL CHEAL POLPECrop Code ZEAMX ZEAMXRating Data Type INJURY INJURY CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % % %Rating Date Jun-25-02 Jul-16-02 Jul-16-02 Jul-16-02 Jul-16-02 Jul-16-02 Jul-16-02Crop Stage 7-8 LF 12-15 LFCrop Stage Scale 55 CM 0.5-1.5MWeed Stage 3-4 LF 2-4 LF 6-20+ LF 4-20+ LF 8-20+ LFWeed Density, Unit 9 /M2 12 /M2 52 /M2 44 /M2 13 /M2Trt-Eval Interval 7 DAT 28 DAT 28 DAT 28 DAT 28 DAT 28 DAT 28 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 1 2 3 4 5 6 71 Untreated Check 0 a 0 a 0 b 0 b 0 c 0 b 0 c2 glyphosate (RT) 360 SL 900 G A/HA POST A 0 a 0 a 96 a 99 a 89 ab 99 a 94 ab3 glyphosate (RT) 360 SL 900 G A/HA POST A 0 a 0 a 94 a 99 a 90 ab 98 a 96 a

Crop Booster SO 2.000 L/HA POST A4 glyphosate (RT) 360 SL 900 G A/HA POST A 0 a 0 a 94 a 99 a 91 ab 99 a 90 b

Crop Booster SO 4.000 L/HA POST A5 glyphosate (RT) 360 SL 900 G A/HA POST A 0 a 0 a 95 a 99 a 94 a 99 a 96 a

0S01 - C SO 2.000 L/HA POST A6 glyphosate (RT) 360 SL 900 G A/HA POST A 0 a 0 a 95 a 99 a 88 b 98 a 91 b

0S01 - C SO 4.000 L/HA POST ALSD (P=.05) 0.0 0.0 2.9 0.9 4.9 1.0 4.0Standard Deviation 0.0 0.0 1.9 0.6 3.3 0.7 2.6CV 0.0 0.0 2.4 0.74 4.34 0.82 3.41Means followed by same letter do not significantly differ (P=.05, LSD)

Weed Code ECHCG ABUTH AMARE AMBEL CHEAL POLPE ECHCGCrop Code ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % % %Rating Date Jul-16-02 Aug-13-02 Aug-13-02 Aug-13-02 Aug-13-02 Aug-13-02 Aug-13-02Crop Stage TASL/SLKCrop Stage Scale 0.5-2 MWeed Stage 8-9 LF 2-3 LF 4 LF 16-20+ L 20+ LF 8-20+ LF 6-10 LFWeed Density, Unit 6 /M2 7 /M2 5 /M2 52 /M2 33 /M2 10 /M2 5 /M2Trt-Eval Interval 28 DAT 56 DAT 56 DAT 56 DAT 56 DAT 56 DAT 56 DATTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 8 9 10 11 12 13 141 Untreated Check 0 b 0 c 0 c 0 b 0 c 0 e 0 b2 glyphosate (RT) 360 SL 900 G A/HA POST A 99 a 90 a 95 b 94 a 97 ab 95 ab 97 a3 glyphosate (RT) 360 SL 900 G A/HA POST A 99 a 86 a 96 ab 93 a 97 ab 90 d 97 a

Crop Booster SO 2.000 L/HA POST A4 glyphosate (RT) 360 SL 900 G A/HA POST A 99 a 90 a 97 ab 92 a 96 b 92 cd 97 a

Crop Booster SO 4.000 L/HA POST A5 glyphosate (RT) 360 SL 900 G A/HA POST A 99 a 86 a 97 a 94 a 98 a 97 a 97 a

0S01 - C SO 2.000 L/HA POST A6 glyphosate (RT) 360 SL 900 G A/HA POST A 99 a 78 b 96 ab 94 a 96 b 93 bc 97 a

0S01 - C SO 4.000 L/HA POST ALSD (P=.05) 0.4 6.8 2.5 2.3 1.0 2.9 0.9Standard Deviation 0.3 4.5 1.6 1.5 0.7 1.9 0.6CV 0.34 6.33 2.04 1.97 0.86 2.44 0.71


-156-

THE EFFECT OF FOLIAR FERTILIZERS ON HERBICIDE PERFORMANCE IN CORN III


Weed CodeCrop Code ZEAMX ZEAMXRating Data Type YIELD YIELDRating Unit T/HA BU/ACRating Date Oct-23-02 Oct-23-02Crop StageCrop Stage ScaleWeed StageWeed Density, UnitTrt-Eval IntervalTrt Treatment Form Form Rate Grow ApplNo. Name Conc Type Rate Unit Stg Code 17 18

1 Untreated Check 0.06 b 1.0 b2 glyphosate (RT) 360 SL 900 G A/HA POST A 2.93 a 46.7 a3 glyphosate (RT) 360 SL 900 G A/HA POST A 3.28 a 52.2 a

Crop Booster SO 2.000 L/HA POST A4 glyphosate (RT) 360 SL 900 G A/HA POST A 2.65 a 42.2 a

Crop Booster SO 4.000 L/HA POST A5 glyphosate (RT) 360 SL 900 G A/HA POST A 2.73 a 43.4 a

0S01 - C SO 2.000 L/HA POST A6 glyphosate (RT) 360 SL 900 G A/HA POST A 3.06 a 48.7 a

0S01 - C SO 4.000 L/HA POST ALSD (P=.05) 0.963 15.34Standard Deviation 0.639 10.18CV 26.08 26.08


Trial Comments

There was no visual injury in Roundup Ready corn (ZEAMX) with the postemergence herbicide tankmixes evaluated.

The addition of Crop Booster (2 or 4 L/ha) to glyphosate (Roundup Transorb) did not appreciably affect the level of weed control (less than 5% difference fromglyphosate alone) in Roundup Ready corn.

The addition of 0S01 - C (2 or 4 L/ha) to glyphosate (Roundup Transorb) did not appreciably affect the level of weed control (less than 5% difference fromglyphosate alone) in Roundup Ready corn with the exception of velvetleaf (ABUTH) which reduced by 12 % at the high rate.

Corn yields were very low and variable in this experiment due to the dry conditions in 2002. The addition of Crop Booster or 0S01 - C to glyphosate did not have animpact on Roundup Ready corn yield.

-157-

EFFECT OF REDDY IT ON WEED MANAGEMENT IN CORN (FC02C11)

Shane Diebold, Peter Sikkema Experiment ID: FC02C11

CROP: ZEAMX, CORN, FIELD (DKC 5333). Planted: May-22-02, 76200 S/H, 75 CM Row Width. Planting Method: SEEDED. Emerged On: Jun-01-02.Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 3. Plot Size: 2 M x 8 M. Expt. Location: RC - Range J3B.


APPLICATION DESCRIPTION STAGE AT APPLICATIONApplication: A Application: ADate : Jun-12-02 Crop 1 ZEAMX 4-5 LFTime of Day: 4:00PM Height : 22 CMMethod : SPRAYTiming : POSPOS Weed 1 ABUTH COT-2 LFPlacement : BROFOL Stg.Scale: 1-4 CMAir Temp. : 27.6 C Density : 6.66 /M2% Humidity : 54 Weed 2 AMAPO 2-3 LFWind Speed : 4 KPH Stg.Scale: 1-3 CMDew Present: N Density : 2 /M2Soil Moist.: DRY Weed 3 AMBEL 2-4 LFCloud Cover: 55% Stg.Scale: 1-4 CMEquipment : CO2 SPRAY Density : 6 /M2Pressure : 207 kPa Weed 4 CHEAL COT-10 LFNozzle Type: FLAT FAN Stg.Scale: 1-5 CMNozzle Size: XR8002VS Density : 2 /M2Noz.Spacing: 50 CMBoom Length: 2 MBoom Height: 50 CMCarrier : H20Appl.Volume: 200 L/HAPropellant : CO2

Weed Code ABUTH AMAPO AMBEL CHEAL ABUTH AMAPO AMBELCrop Code ZEAMX ZEAMXRating Data Type INJURY INJURY CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % % % % %Rating Date Jun-12-02 Jul-08-02 Jul-08-02 Jul-08-02 Jul-08-02 Jul-08-02 Aug-06-02 Aug-06-02 Aug-06-02Crop Stage 7-8 LF 6-12 LFCrop Stage Scale 30-41 CM 55-130CMWeed Stage 6-8 LF 8-20+ LF 6-20+ LF 12-20+LF 6-15 LF 20+ LF 6-20+ LFWeed Density, Unit 6 /M2 4 /M2 1.3 /M2 8.7 /M2 8 /M2 2 /M2 2.7 /M2Trt-Eval Interval 9 DAT 26 DAT 26 DAT 26 DAT 26 DAT 26 DAT 55 DAT 55 DAT 55 DATTrt Treatment Rate Grow ApplNo. Name Rate Unit Stg Code

1 Untreated Check 0 a 0 a 0 c 0 c 0 c 0 c 0 d 0 c 0 e2 dicamba 144 G A/HA POST A 0 a 0 a 78 ab 100 a 100 a 95 ab 72 abc 97 a 100 a3 dicamba 288 G A/HA POST A 0 a 0 a 92 a 99 a 100 a 97 a 90 a 95 a 100 a4 dicamba - tech 144 G A/HA POST A 0 a 0 a 86 a 96 ab 100 a 100 a 78 ab 95 a 100 a

Reddy It 0.150 % V/V POST A5 dicamba - tech 288 G A/HA POST A 0 a 0 a 96 a 96 ab 100 a 100 a 88 a 94 a 100 a

Reddy It 0.150 % V/V POST A6 2,4-D amine 140 G A/HA POST A 0 a 0 a 33 bc 80 ab 95 ab 92 b 55 abc 83 a 77 bc7 2,4-D amine 280 G A/HA POST A 0 a 0 a 78 ab 93 ab 93 b 95 ab 75 ab 83 a 70 cd8 2,4-D - tech 140 G A/HA POST A 0 a 0 a 50 ab 77 b 93 b 97 ab 35 cd 67 b 53 d

Reddy It 0.150 % V/V POST A9 2,4-D - tech 280 G A/HA POST A 0 a 0 a 55 ab 97 ab 100 a 100 a 48 bc 83 a 97 ab

Reddy It 0.150 % V/V POST A

LSD (P=.05) 0.0 0.0 46.3 21.2 5.8 5.4 38.1 15.6 20.8Standard Deviation 0.0 0.0 26.8 12.2 3.4 3.1 22.0 9.0 12.0CV 0.0 0.0 42.37 14.89 3.88 3.61 36.59 11.61 15.54


-158-

EFFECT OF REDDY IT ON WEED MANAGEMENT IN CORN


Weed Code CHEALCrop Code ZEAMX ZEAMXRating Data Type CONTROL YIELD YIELDRating Unit % T/HA BU/ACRating Date Aug-06-02 Oct-10-02 Oct-10-02Weed Stage 20+ LFWeed Density, Unit 2.7 /M2Trt-Eval Interval 55 DAT 120 DAT 120 DATTrt Treatment Rate Grow ApplNo. Name Rate Unit Stg Code

1 Untreated Check 0 d 2.32 d 36.9 d2 dicamba 144 G A/HA POST A 80 c 2.98 bcd 47.4 bcd3 dicamba 288 G A/HA POST A 93 ab 3.45 abc 55.0 abc4 dicamba - tech 144 G A/HA POST A 100 a 3.62 ab 57.7 ab

Reddy It 0.150 % V/V POST A5 dicamba - tech 288 G A/HA POST A 98 a 4.37 a 69.7 a

Reddy It 0.150 % V/V POST A6 2,4-D amine 140 G A/HA POST A 78 c 2.49 cd 39.6 cd7 2,4-D amine 280 G A/HA POST A 83 bc 2.76 bcd 44.0 bcd8 2,4-D - tech 140 G A/HA POST A 93 ab 2.82 bcd 44.9 bcd

Reddy It 0.150 % V/V POST A9 2,4-D - tech 280 G A/HA POST A 100 a 3.34 a-d 53.2 a-d

Reddy It 0.150 % V/V POST A

LSD (P=.05) 12.1 1.081 17.22Standard Deviation 7.0 0.624 9.95CV 8.65 19.97 19.97


Trial Comments

This trial was established to compare the technical acid form of dicamba and 2,4-D plus the adjuvant Reddy It to the present formulations available on the market.

There was no injury in corn with the herbicide treatments evaluated.

There was no statistical difference between the 480 SL formulation of dicamba and technical acid plus Reddy-It in respect to velvetleaf (ABUTH), green pigweed(AMAPO) and common ragweed (AMBEL) early and full season control. The technical acid form of dicamba plus Reddy It provided better full season control oflamb's-quarters (CHEAL) than the 480 SL formulation at the low rate.

There was no statistical difference between the 470 EC formulation of 2,4-D and technical acid plus Reddy-It in respect to velvetleaf (ABUTH) early and fullseason control. The 470 EC formulation of 2,4-D provided better full season control of green pigweed (AMAPO) than the 480 SL formulation at the low rate andbetter full season control of common ragweed (AMBEL) at the low rate . The technical acid form of 2,4-D plus Reddy It provided better early and full seasoncontrol of common ragweed (AMBEL) at the full rate, and better full season control of lamb's-quarters (CHEAL) at the low and high rate.

Corn yields were very low and variable in this experiment due to the dry conditions in 2002, therefore it is difficult to relate corn yields with the level of weedcontrol.

-159-

EFFECT OF REDDY IT ON WEED MANAGEMENT IN CORN II (FC02C12)

Shane Diebold, Peter Sikkema Experiment ID: FC02C12 CROP: ZEAMX, CORN, FIELD (DKC 5333). Planted: May-22-01, 76200 S/H, 75 CM Row Width. Planting Method: SEEDED. Emerged On: Jun-01-02.Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 3. Plot Size: 2 M x 8 M. Expt. Location: RC - Range J3B.


APPLICATION DESCRIPTION STAGE AT APPLICATIONApplication: A Application: ADate : Jun-12-02 Crop 1 ZEAMX 4LFTime of Day: 3:20pm Height : 20.8 CMMethod : SPRAYTiming : POSPOS Weed 1 ABUTH COT-2 LFPlacement : BROFOL Stg.Scale: 2-3 CMAir Temp. : 27.6 C Density : 3.33 /M2% Humidity : 54 Weed 2 AMAPO COT-4 LFWind Speed : 4 KPH Stg.Scale: 1-3 CMDew Present: N Density : 7.33 /M2Soil Moist.: DRY SURF Weed 3 AMBEL 2-4 LFCloud Cover: 55% Stg.Scale: 1-3 CMEquipment : CO2 SPRAY Density : 3.33 /M2Pressure : 207 kPa Weed 4 CHEAL COT-2LFNozzle Type: FLAT FAN Stg.Scale: 1-2 CMNozzle Size: XR8002VS Density : 1.33 /M2Noz.Spacing: 50 CM Weed 5 SETVI 2-3 LFBoom Length: 2 M Stg.Scale: 1-3 CMBoom Height: 50 CM Density : 11.3 /M2Carrier : H20Appl.Volume: 200 L/HAPropellant : CO2

Weed Code ABUTH AMAPO AMBEL CHEAL SETVI ABUTHCrop Code ZEAMX ZEAMXRating Data Type INJURY INJURY CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % % % %Rating Date Jun-21-02 Jul-08-02 Jul-08-02 Jul-08-02 Jul-08-02 Jul-08-02 Jul-08-02 Aug-07-02Crop Stage 7-8 LF 8-11 LFCrop Stage Scale 35-43 CM 58-123CMWeed Stage 5-7 LF 8-20+ LF 8-14LF 8-20+ LF 4-8 LF 6 LFWeed Density, Unit 4 /M2 4.7 /M2 6.7 /M2 6.7 /M2 15.3/M2 0.67/M2Trt-Eval Interval 9 DAT 26 DAT 26 DAT 26 DAT 26 DAT 26 DAT 26 DAT 56 DATTrt Treatment Rate Grow ApplNo. Name Rate Unit Stg Code1 Untreated Check 0 a 0 a 0 c 0 d 0 c 0 c 0 e 0 d2 nicosulfuron/rimsulfuron 25 G A/HA POST A 0 a 0 a 97 a 100 a 77 ab 92 a 95 ab 92 ab

Agral 90 0.200 % V/V POST A3 nicosulfuron/rimsulfuron 25 G A/HA POST A 0 a 0 a 100 a 100 a 65 b 93 a 98 a 98 a

Reddy It 0.200 % V/V POST A4 nicosulfuron 25 G A/HA POST A 0 a 0 a 79 b 100 a 82 ab 80 b 97 a 67 c

Agral 90 0.200 % V/V POST A5 nicosulfuron 25 G A/HA POST A 0 a 0 a 93 a 100 a 92 a 90 ab 93 ab 78 bc

Reddy It 0.200 % V/V POST A6 rimsulfuron 12.5 G A/HA POST A 0 a 0 a 99 a 100 a 100 a 100 a 98 a 99 a

s-metolachlor 573 G A/HA POST Adicamba 300 G A/HA POST AAgral 90 0.200 % V/V POST A

7 rimsulfuron 12.5 G A/HA POST A 0 a 0 a 100 a 100 a 100 a 100 a 98 a 100 as-metolachlor 573 G A/HA POST Adicamba 300 G A/HA POST AReddy It 0.200 % V/V POST A

8 nicosulfuron/rimsulfuron 25 G A/HA POST A 0 a 0 a 99 a 100 a 100 a 100 a 96 a 91 abflumetsulam/clopyralid/2,4-D 236 G A/HA POST AAgral 90 0.250 % V/V POST A

9 nicosulfuron/rimsulfuron 25 G A/HA POST A 0 a 0 a 98 a 100 a 100 a 99 a 99 a 96 abflumetsulam/clopyralid/2,4-D 236 G A/HA POST AReddy It 0.250 % V/V POST A

10 nicosulfuron 25 G A/HA POST A 0 a 0 a 98 a 100 a 100 a 100 a 97 a 98 adicamba/diflufenzopyr 200 G A/HA POST AAgral 90 0.250 % V/V POST AUAN 28 % 1.250 % V/V POST A

11 nicosulfuron 25 G A/HA POST A 0 a 0 a 100 a 100 a 100 a 100 a 100 a 100 adicamba/diflufenzopyr 200 G A/HA POST AReddy It 0.250 % V/V POST AUAN 28 % 1.250 % V/V POST A

12 nicosulfuron 18.75 G A/HA POST A 0 a 0 a 96 a 100 a 100 a 100 a 99 a 91 abprosulfuron 10 G A/HA POST Adicamba 140 G A/HA POST AAgral 90 0.200 % V/V POST A

13 nicosulfuron 18.75 G A/HA POST A 0 a 0 a 98 a 100 a 100 a 100 a 100 a 95 abprosulfuron 10 G A/HA POST Adicamba 140 G A/HA POST AReddy It 0.200 % V/V POST A

14 nicosulfuron 18.75 G A/HA POST A 0 a 0 a 99 a 100 a 100 a 100 a 99 a 98 aprimisulfuron/dicamba 166 G A/HA POST AAgral 90 0.200 % V/V POST A

15 nicosulfuron 18.75 G A/HA POST A 0 a 0 a 100 a 100 a 100 a 100 a 100 a 97 aprimisulfuron/dicamba 166 G A/HA POST AReddy It 0.200 % V/V POST A

-160-

EFFECT OF REDDY IT ON WEED MANAGEMENT IN CORN II


Weed Code ABUTH AMAPO AMBEL CHEAL SETVI ABUTHCrop Code ZEAMX ZEAMXRating Data Type INJURY INJURY CONTROL CONTROL CONTROL CONTROL CONTROL CONTROLRating Unit % % % % % % % %Rating Date Jun-21-02 Jul-08-02 Jul-08-02 Jul-08-02 Jul-08-02 Jul-08-02 Jul-08-02 Aug-07-02Crop Stage 7-8 LF 8-11 LFCrop Stage Scale 35-43 CM 58-123CMWeed Stage 5-7 LF 8-20+ LF 8-14LF 8-20+ LF 4-8 LF 6 LFWeed Density, Unit 4 /M2 4.7 /M2 6.7 /M2 6.7 /M2 15.3/M2 0.67/M2Trt-Eval Interval 9 DAT 26 DAT 26 DAT 26 DAT 26 DAT 26 DAT 26 DAT 56 DATTrt Treatment Rate Grow ApplNo. Name Rate Unit Stg Code16 prosulfuron 10 G A/HA POST A 0 a 0 a 99 a 100 b 100 a 100 a 47 d 93 ab

dicamba 140 G A/HA POST AAgral 90 0.200 % V/V POST A

17 prosulfuron 10 G A/HA POST A 0 a 0 a 100 a 99 c 100 a 100 a 60 cd 100 adicamba 140 G A/HA POST AReddy It 0.200 % V/V POST A

18 primisulfuron/dicamba 166 G A/HA POST A 0 a 0 a 100 a 100 a 100 a 100 a 81 abc 100 aAgral 90 0.200 % V/V POST A

19 primisulfuron/dicamba 166 G A/HA POST A 0 a 0 a 98 a 100 a 100 a 100 a 67 bcd 94 abReddy It 0.200 % V/V POST A

LSD (P=.05) 0.0 0.0 10.5 0.3 25.4 10.1 28.7 18.4Standard Deviation 0.0 0.0 6.4 0.2 15.4 6.1 17.4 11.2CV 0.0 0.0 6.89 0.2 17.03 6.66 20.38 12.56Means followed by same letter do not significantly differ (P=.05, LSD)

Weed Code AMAPO AMBEL CHEAL SETVICrop Code ZEAMX ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL YIELD YIELDRating Unit % % % % T/HA BU/ACRating Date Aug-08-02 Aug-08-02 Aug-08-02 Aug-08-02 Oct-10-02 Oct-10-02Weed Stage 5-20+ LF 13-20+LF 14-20+LF 3-7 LFWeed Density, Unit 5.33/M2 4 /M2 6.67/M2 4 /M2Trt-Eval Interval 57 DAT 57 DAT 57 DAT 57 DAT 120 DAT 120 DATTrt Treatment Rate Grow ApplNo. Name Rate Unit Stg Code1 Untreated Check 0 c 0 d 0 e 0 d 1.63 d 26.0 d2 nicosulfuron/rimsulfuron 25 G A/HA POST A 100 a 75 c 80 bc 93 ab 3.51 bc 56.0 bc

Agral 90 0.200 % V/V POST A3 nicosulfuron/rimsulfuron 25 G A/HA POST A 100 a 82 bc 90 ab 98 ab 4.23 abc 67.5 abc

Reddy It 0.200 % V/V POST A4 nicosulfuron 25 G A/HA POST A 100 a 80 c 63 d 96 ab 4.03 abc 64.3 abc

Agral 90 0.200 % V/V POST A5 nicosulfuron 25 G A/HA POST A 100 a 88 abc 75 c 93 ab 3.67 abc 58.5 abc

Reddy It 0.200 % V/V POST A6 rimsulfuron 12.5 G A/HA POST A 100 a 100 a 100 a 93 ab 4.73 ab 75.3 ab

s-metolachlor 573 G A/HA POST Adicamba 300 G A/HA POST AAgral 90 0.200 % V/V POST A

7 rimsulfuron 12.5 G A/HA POST A 100 a 100 a 100 a 98 ab 4.89 a 77.9 as-metolachlor 573 G A/HA POST Adicamba 300 G A/HA POST AReddy It 0.200 % V/V POST A

8 nicosulfuron/rimsulfuron 25 G A/HA POST A 99 a 95 ab 98 a 93 ab 3.41 bc 54.4 bcflumetsulam/clopyralid/2,4-D 236 G A/HA POST AAgral 90 0.250 % V/V POST A

9 nicosulfuron/rimsulfuron 25 G A/HA POST A 100 a 98 a 95 a 100 a 4.14 abc 66.0 abcflumetsulam/clopyralid/2,4-D 236 G A/HA POST AReddy It 0.250 % V/V POST A

10 nicosulfuron 25 G A/HA POST A 100 a 100 a 98 a 95 ab 4.23 abc 67.3 abcdicamba/diflufenzopyr 200 G A/HA POST AAgral 90 0.250 % V/V POST AUAN 28 % 1.250 % V/V POST A

11 nicosulfuron 25 G A/HA POST A 98 ab 99 a 98 a 97 ab 4.00 abc 63.8 abcdicamba/diflufenzopyr 200 G A/HA POST AReddy It 0.250 % V/V POST AUAN 28 % 1.250 % V/V POST A

12 nicosulfuron 18.75 G A/HA POST A 99 a 100 a 100 a 99 a 4.72 ab 75.2 abprosulfuron 10 G A/HA POST Adicamba 140 G A/HA POST AAgral 90 0.200 % V/V POST A

13 nicosulfuron 18.75 G A/HA POST A 100 a 100 a 100 a 99 a 3.97 abc 63.2 abcprosulfuron 10 G A/HA POST Adicamba 140 G A/HA POST AReddy It 0.200 % V/V POST A

14 nicosulfuron 18.75 G A/HA POST A 100 a 100 a 100 a 98 ab 3.97 abc 63.2 abcprimisulfuron/dicamba 166 G A/HA POST AAgral 90 0.200 % V/V POST A

15 nicosulfuron 18.75 G A/HA POST A 100 a 98 a 98 a 98 ab 4.03 abc 64.2 abcprimisulfuron/dicamba 166 G A/HA POST AReddy It 0.200 % V/V POST A

-161-

EFFECT OF REDDY IT ON WEED MANAGEMENT IN CORN II


Weed Code AMAPO AMBEL CHEAL SETVICrop Code ZEAMX ZEAMXRating Data Type CONTROL CONTROL CONTROL CONTROL YIELD YIELDRating Unit % % % % T/HA BU/ACRating Date Aug-08-02 Aug-08-02 Aug-08-02 Aug-08-02 Oct-10-02 Oct-10-02Weed Stage 5-20+ LF 13-20+LF 14-20+LF 3-7 LFWeed Density, Unit 5.33/M2 4 /M2 6.67/M2 4 /M2Trt-Eval Interval 57 DAT 57 DAT 57 DAT 57 DAT 120 DAT 120 DATTrt Treatment Rate Grow ApplNo. Name Rate Unit Stg Code

16 prosulfuron 10 G A/HA POST A 96 b 100 a 100 a 70 c 3.48 bc 55.5 bcdicamba 140 G A/HA POST AAgral 90 0.200 % V/V POST A

17 prosulfuron 10 G A/HA POST A 99 ab 100 a 100 a 70 c 3.95 abc 62.9 abcdicamba 140 G A/HA POST AReddy It 0.200 % V/V POST A

18 primisulfuron/dicamba 166 G A/HA POST A 98 ab 99 a 100 a 82 bc 3.35 c 53.4 cAgral 90 0.200 % V/V POST A

19 primisulfuron/dicamba 166 G A/HA POST A 100 a 100 a 99 a 70 c 3.53 bc 56.3 bcReddy It 0.200 % V/V POST A



Trial Comments

This trial was established to compare the adjuvants Agral 90 and Reddy It with a number of sulfonyl urea herbicides registered for use in corn.

There was no injury in corn with the postemergence herbicide treatments evaluated.

There was no statistical difference in weed control (velvetleaf (ABUTH), green pigweed (AMAPO), common ragweed (AMBEL), lamb's-quarters (CHEAL) and green foxtail(SETVI)) between adjuvants Agral 90 and Reddy It when applied with nicosulfuron/rimsulfuron (Ultim), rimsulfuron plus s-metolachlor plus dicamba (Battalion),nicosulfuron/rimsulfuron plus flumetsulam/clopyralid/2,4-D (Ultimax), nicosulfuron plus dicamba/diflufenzopyr (Accent Total), nicosulfuron plus prosulfuron plus dicamba (Accent1-Pass), nicosulfuron (Accent) plus primisulfuron/dicamba (Summit), prosulfuron plus dicamba (PeakPlus) and primisulfuron/dicamba (Summit).

The application of nicosulfuron with Reddy It provided better early season control of velvetleaf and better full season control of lamb's-quarters than when nicosulfuron wasapplied with Agral 90.

Corn yields were very low and variable in this experiment due to the dry conditions in 2002, therefore it is difficult to relate corn yields with the level of weed control. Corn yieldswere equivalent with the two adjuvants evaluated.

peter sikkema, todd cowan - ridgetown · comparison of weed management systems in corn ii peter...

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