weed control trials research report 2015 · 2020-07-28 · tolerance and weed control in corn,...

GO TO TABLE OF CONTENTS

WEED CONTROL TRIALS

RESEARCH REPORT

2015

P.H. Sikkema

TOLERANCE AND WEED CONTROL IN CORN, SOYBEAN AND WHEAT

RESEARCH RESULTS 2015

ACKNOWLEDGEMENTS

We appreciate the cooperation and assistance provided by the representatives of the various agricultural companies; their ideas, the herbicide samples they have provided for the research work, as well as their monetary assistance. Funding for the 2015 weed management research program was also provided by the following: Grain Farmers of Ontario Ontario Bean Growers Growing Forward 2 We also appreciate the cooperation of the following seed companies who provided the seed: DeKalb Canada Inc. and

Pioneer.

Additionally, thank you to the farmer co-operators whom often assist our research by working the land, applying fertilizer,

and planting the crop at our off-station sites.

Technical Assistants Research Technicians Summer Assistants Lynette Brown Meaghan Burns Laura Murray Holly Byker Heather Hendriks Britt Robinson Todd Cowan Elyse Johnston Loretta Steeper Chris Kramer Shelby Johnston Rebecca Stirling Christy Shropshire Laura Louwagie Jenna Wilson Deanna Martin We trust that the information provided by this research will further the science of weed management by assisting companies with the registrations and labeling of their products. This information will also allow research and extension personnel to provide proper herbicide recommendations, thereby enabling growers to achieve consistent, broad spectrum weed control with a minimum of crop damage.

P.H. Sikkema Ridgetown Campus, University of Guelph

N0P 2C0 (519) 674-1500 ext. 63603 [email protected]

2015 WEATHER DATA RIDGETOWN CAMPUS

RAINFALL IN MM.

DATE APRIL MAY JUNE JULY AUGUST SEPT. OCT.

1 0 0 0 0 0 0 -

2 4.4 0 0 0 - 0 -

3 1.1 0 0 0 17.9 2.9 7.7

4 0 0 0 0 0 0 0.3

5 0 - 0 0.2 - 0 0

6 0 0.2 0 0 0 0 0

7 2.3 - 1.3 7.5 0 0 0

8 2.1 0 3.7 0 0 0 3.4

9 16.7 0 5.7 9.7 0 1.7 2.5

10 1.3 0 1.7 0.2 9.6 0 0

11 0.2 4.4 0 - 0 3.1 0

12 0 0 0 0 0 0 0

13 1.5 0 0.3 0 - 0 0

14 0 0 11.8 10.8 - 0 0

15 0 0.5 0 0 0 0 0

16 4.4 0.3 1.3 0 0 0 0.2

17 0 0 0 1.9 0 0 0

18 0 0 10.6 0 2.5 0.6 0

19 22.1 0 0 0 0 30.9 0

20 2 0 2.8 0 1.5 0 0

21 1 0 0 0 0 0 0

22 0.2 0 2.1 0 0 0 -

23 0 0 2.2 0 2.8 0 0

24 0 0 0 0 0 0 15.5

25 0 0 0 30.2 0 0 0

26 0 13.6 0 0 0 0 0

27 0 4.9 48 0 0 - 2.4

28 0 0 2.5 0 0 0 53.7

29 0 0 0 1.5 0 5.6 0

30 0 11.4 3.7 0 0 0 0

31 54.8 - 0 5.6

TOTAL 59.3 90.1 97.7 62.0 34.3 44.8 91.3

30 YEAR AVG. 76.2 78.9 70.6 74.1 79.7 88.1 69.8

TEMPERATURE (C) MEAN MAX 12.6 22.7 23.3 25.9 25.1 25.0 16.2

MEAN MIN 1.7 9.7 12.9 13.6 14.2 13.0 5.4

MEAN 7.2 16.2 18.1 19.8 19.7 19.1 10.7

TEMPERATURE, 30 YEAR AVERAGE (C)

MEAN MAX 13.0 19.7 24.8 27.2 26.0 22.4 15.5

MEAN MIN 2.4 8.4 14.1 16.0 14.7 11.1 5.6

MEAN 7.7 14.1 19.2 21.6 20.4 16.8 10.6

Weather data

provided by: and

2015 WEATHER DATA HURON RESEARCH STATION

RAINFALL IN MM.

DATE APRIL MAY JUNE JULY AUGUST SEPT. OCT.

1 0 0 0 0.6 0.3 0 0

2 6.2 0 0 0 11.9 0 0

3 1.8 0 1.3 0 10.4 1.8 9.8

4 0 0.6 0 0 7.2 3.6 3.8

5 0.8 0.6 0 0 0.3 0.6 0

6 0 0 0 0 0 0 0.3

7 0 0 1.5 13.2 0 8.4 0

8 13.4 0 63.4 0 0 50.2 0.9

9 6.4 2.3 0.3 0 0 13.6 3.4

10 0 0.3 0 0 11.7 0 0

11 0 4.8 0 0 0 1.1 0

12 0 2.4 7.2 0 0 0 0

13 5.6 0 0 0 0 0 0.6

14 0 0 9 10.3 0.6 0 3.3

15 0 1.5 2.3 0 0 0 4.7

16 0.6 0 8.5 0 0 0 7.8

17 0 1.1 0 38.4 0.8 0 6.8

18 0 0 1.8 0.3 4.8 0.5 13.5

19 6.2 0 0 0 0 2.2 0.3

20 7.6 0 0 0 14.2 0 1.4

21 1.3 0 0.3 0 0 0 3.5

22 0 0 3.1 0 0 0 0

23 0 0 8.3 0.5 1.3 0 0

24 0 0 0 0 0 0 23.8

25 0 2.6 0 0 1.8 0 0

26 0 12.5 0 0.3 3.6 0 0

27 1.2 8.4 14.7 0 2.8 0 0

28 0 0 5.8 0 0.2 0 28

29 0 0 7.4 0 1.4 2.4 1.9

30 0 28.9 1.8 0 1.4 0 1.7

31 24.6 0 0 10.1

TOTAL 51.1 90.6 136.7 63.6 74.7 84.4 125.6

30 YEAR AVG. 76.4 84.7 85.7 96.9 67 110.1 97.5

TEMPERATURE (C) MEAN MAX 11.4 23.0 23.5 26.6 25.1 25.2 14.5

MEAN MIN 2.1 8.9 12.6 13.6 14.4 13.4 5.0

MEAN 6.6 16.2 18.2 20.4 19.6 18.9 9.7

TEMPERATURE, 30 YEAR AVERAGE (C)

MEAN MAX 12.3 19.5 24.3 26.4 25.5 21.9 14.5

MEAN MIN 2.1 8.0 13.1 15.1 14.5 10.9 5.4

MEAN 7.2 13.8 18.7 20.8 20.0 16.4 9.9

Weather data

provided by: and

BAYER CODE ABBREVIATIONS

Code Common Name Scientific Name ABUTH Velvetleaf Abutilon theophrasti AMAPO Green pigweed Amaranthus powellii AMARE Redroot pigweed Amaranthus retroflexus AMASS Pigweed species Amaranthus spp. AMBEL Common ragweed Ambrosia artemisiifolia AMBTR Giant ragweed Ambrosia trifida ATXPA Spreading atriplex Atriplex patula CAPBP Shepherd’s-purse Capsella bursa-pastoris CHEAL Common lamb’s-quarter Chenopodium album CIRAR Canada thistle Cirsium arvense DAUCA Wild carrot Daucus carrota EQUAR Field horsetail Equisetum arvense ERIAN Annual fleabane Erigeron annuss ERICA Canada fleabane Conyza canadensis ERYCH Wormseed mustard Erysimum cheiranthoides HIBTR Flower-of-an-hour Hibiscus trionum LACSE Prickly lettuce Lactuca serriola LAMAM Henbit Lamium amplexicaule MEDSA Alfalfa Medicago sativa OXAST Common yellow woodsorrel Oxalis stricta PHSAN Adzuki bean Phaseolus angulatus PLAMA Broad-leaved plantain Plantago major POLCO Wild buckwheat Polygonum convolvulus POLLA Green smartweed Polygonum lapathifolium POLPE Lady’s-thumb Polygonum persicaria POROL Purslane Portulaca oleracea SINAR Wild mustard Sinapis arvensis SIYAN Bur-cucumber Sicyos angulatus SOLCA Horsenettle Solanum carolinense SOLPT Eastern black nightshade Solanum ptycanthum SONAR Perennial sowthistle Sonchus arvensis SONAS Spiny annual sowthistle Sonchus asper SONOL Annual sowthistle Sonchus oleraceus SOOCA Canada goldenrod Solidago canadensis STEME Common chickweed Stellaria media TAROF Dandelion Taraxacum officinale TRFPR Red clover Trifolium pratense TRFSS Clover species Trifolum spp. VICSA Common vetch Vicia sativa XANST Common cocklebur Xanthium strumarium

AGRRE Quackgrass Agropyron repens CCHPA Longspine sandbur Cenchrus pauciflorus DIGIS Smooth crabgrass Digitaria ischaemum DIGSA Large crabgrass Digitaria sanguinalis DIGSS Crabgrass species Digitaria spp. ECHCG Barnyard grass Echinochloa crus-galli ERAME Stinkgrass Eragrostis megastachya GGGAN Annual grass species MUHFR Wirestem muhly Muhlenbergia frondosa PANCA Witch grass Panicum capillare PANDI Fall panicum Panicum dichotomiflorum PANMI Proso millet Panicum miliaceum SETLU Yellow foxtail Setaria glauca SETVI Green foxtail Setaria viridis

TABLE OF CONTENTS

CORN

EFFECT OF GLYPHOSATE PLUS FUNGICIDE APPLIED AT V4-V6 ON CROP INJURY, WEED CONTROL, DISEASE CONTROL AND CORN YIELD I (14, 15, 16) (FC15C1A) ....................................................................................... 1

EFFECT OF GLYPHOSATE PLUS FUNGICIDE APPLIED AT V4-V6 ON CROP INJURY, WEED CONTROL, DISEASE

CONTROL AND CORN YIELD II (14,15,16) (FC15C1B) ........................................................................................ 2 TOLERANCE OF CORN TO HALOSULFURON APPLIED PRE AND POST I (FC15C2A) ................................................ 5 TOLERANCE OF CORN TO HALOSULFURON APPLIED PRE AND POST II (FC15C2B) ............................................... 7 BIOLOGICALLY EFFECTIVE RATE OF HALOSULFURON APPLIED POSTEMERGENCE IN CORN I (FC15C4A) ....... 8 BIOLOGICALLY EFFECTIVE RATE OF HALOSULFURON APPLIED POSTEMERGENCE IN CORN II (FC15C4B) .... 10 BENEFIT OF ADDING AMS TO GLYPHOSATE (14, 15) (FC15C5A) ............................................................................... 12 BENEFIT OF ADDING AMS TO GLYPHOSATE (14, 15) II (FC15C5B) ............................................................................ 14 TOLERANCE OF CORN TO GLYPHOSATE + 2,4-D APPLIED POST I (DEKALB 52-61 & PIONEER P0094AM)

(FC15C6A) ............................................................................................................................................................. 17 TOLERANCE OF CORN TO GLYPHOSATE + 2,4-D APPLIED POST II (DEKALB 52-61 & PIONEER P0094AM)

(FC15C6B) ............................................................................................................................................................. 25 BROADLEAF WEED CONTROL IN CORN WITH 2,4-D APPLIED POSTEMERGENCE I (FC15C14A) .......................... 33 WEED CONTROL WITH TOPRAMEZONE PLUS ATRAZINE PLUS VARIOUS ADJUVANTS APPLIED POST IN RR

CORN I (FC15C15A) ............................................................................................................................................. 35 EFFECT OF BIOSTIMULANTS ADDED TO POSTEMERGENCE HERBICIDES IN CORN I (FC15C16A) ..................... 37 EFFECT OF BIOSTIMULANTS ADDED TO POSTEMERGENCE HERBICIDES IN CORN II (FC15C16B) .................... 39

SOYBEAN WEED MANAGEMENT IN SOYBEAN WITH SULFENTRAZONE TANKMIXES APPLIED PRE (SY15B2) ..................... 42 WHAT IS THE EFFECT OF LATE EMERGING WEEDS ON THE YIELD OF ROUNDUP READY SOYBEAN I (SY15C1A)

............................................................................................................................................................................... 45 WHAT IS THE EFFECT OF LATE EMERGING WEEDS ON THE YIELD OF ROUNDUP READY SOYBEAN II (SY15C1B)

............................................................................................................................................................................... 47 WHAT IS THE EFFECT OF LATE EMERGING WEEDS ON THE YIELD OF ROUNDUP READY SOYBEAN III

(SY15C1C) ............................................................................................................................................................. 49 BENEFIT OF ADDING AMS TO GLYPHOSATE (14, 15). (SY15C2A) .............................................................................. 51 BENEFIT OF ADDING AMS TO GLYPHOSATE (SY15C2B) ......................................................................................... 53 BENEFIT OF ADDING AMS TO GLYPHOSATE III (SY15C2C) ........................................................................................ 55 WEED MANAGEMENT IN RR SOYBEAN WITH GLYPHOSATE PLUS ADJUVANTS (SY15C3) ................................... 59 EFFECT OF BIOSTIMULANTS ADDED TO POSTEMERGENCE HERBICIDES IN SOYBEAN I (SY15C6A)................. 61 EFFECT OF BIOSTIMULANTS ADDED TO POSTEMERGENCE HERBICIDES IN SOYBEAN II (SY15C6B)................ 63

EFFECT OF BIOSTIMULANTS ADDED TO POSTEMERGENCE HERBICIDES IN SOYBEAN III (SY15C6C) .............. 65 EFFECT OF BIOSTIMULANTS ADDED TO POSTEMERGENCE HERBICIDES IN SOYBEAN IV (SY15C6D) .............. 67 WHEAT TOLERANCE OF WINTER WHEAT TO HERBICIDE PLUS FUNGICIDE (TWINLINE) PLUS FOLIAR FERTILZIER

TANKMIXES I (14, 15, 16) (WW15T1A) ................................................................................................................ 69 TOLERANCE OF WINTER WHEAT TO HERBICIDE PLUS FUNGICIDE (TWINLINE) PLUS FOLIAR FERTILZIER

TANKMIXES II (14, 15, 16) ( WW15T1B) .............................................................................................................. 75 TOLERANCE OF WINTER WHEAT TO HERBICIDE PLUS FUNGICIDE (STRATEGO) PLUS FOLIAR FERTILZIER

TANKMIXES I (14, 15, 16) (WW15T2A) ................................................................................................................ 81 TOLERANCE OF WINTER WHEAT TO HERBICIDE PLUS FUNGICIDE (STRATEGO) PLUS FOLIAR FERTILZIER

TANKMIXES II (14, 15, 16) (WW15T2B) ............................................................................................................... 84 TOLERANCE OF WINTER WHEAT TO HERBICIDE PLUS FUNGICIDE (QUILT) PLUS FOLIAR FERTILZIER

TANKMIXES I (14, 15, 16) (WW15T3A) ................................................................................................................ 90 TOLERANCE OF WINTER WHEAT TO HERBICIDE PLUS FUNGICIDE (QUILT) PLUS FOLIAR FERTILZIER

TANKMIXES II (14, 15, 16) (WW15T3B) ............................................................................................................... 93

Edible Bean Research Report ............................................................................................................................. Section 2

Problem Weed Research Report ........................................................................................................................ Section 3

1

EFFECT OF GLYPHOSATE PLUS FUNGICIDE APPLIED AT V4-V6 ON CROP INJURY, WEED CONTROL, DISEASE CONTROL AND CORN YIELD I (14, 15, 16)

HOLLY BYKER/LYNETTE BROWN, PETER SIKKEMA EXPERIMENT ID: FC15C1A

CROP: ZEAMX, Corn Planted: May-1-15, 78800 SEEDS/HA, 5 CM Deep, 75 CM Row Width. Planting Method: CONV. Emerged On: May-10-15.

Expt. Design: RACOBL. Reps: 3. Plot Size: 2 m x 10 m. Expt. Location: RC - Range J3-B.

Site Description: Soil Texture: L. %OM: 3.9 %Sand: 40.2 %Silt: 33.5 %Clay: 26.3 pH: 7.6 CEC: 18.2.

APPLICATION DESCRIPTION STAGE AT APPLICATION

Application: A Application: A

Date : Jun-4-15 Crop 1 ZEAMX V4

Time of Day: 6:35 am Height : 15-30CM

Timing : POST

Air Temp. : 14.5 C Weed 1

% Humidity : 90 Height:

Wind Speed : 2.7 kph Density :

Dew Present: N

Soil Temp.: 15 C

Soil Moist.: damp

Cloud Cover: 100%

Equipment :

Pressure : 207

Nozzle Type: LOW DRIFT

Nozzle Size: ULD120-02

Noz.Spacing: 50 CM

Boom Length: 2 M

Boom Height: 50 CM

Carrier : WATER

Appl.Volume: 200 L/ha

Propellant : CO2

Crop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX Description DISEASE DISEASE EYESPOT EYESPOT Rating Date Jun-10-15 Jun-22-15 Jul-2-15 Jun-22-15 Jun-22-15 Jul-2-15 Jul-2-15 Rating Type INJURY INJURY INJURY EYESPOT LEAF RUST INCIDENCE SEVERITY Rating Unit % % % % % % % Crop Stage Majority V5 V6 V10-11 V6 V6 V10-11 V10-11 Crop Stage Scale 19-60cm 83-95cm 83-95cm 83-95cm Trt-Eval Interval 6 DA-A 18 DA-A 28 DA-A 18 DA-A 18 DA-A 28 DA-A 28 DA-A

Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5 6 7

1 Control 0 a 0 a 0 a 1 a 0 a 17 a 3 a 2 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 a 0 a 0 a 1 ab 0 a 16 a 3 a 3 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 a 0 a 0 a 0 b 0 a 0 b 0 bc

pyraclostrobin (Headline) BASF 250 EC 100 g ai/ha POST A 4 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 a 0 a 0 a 1 ab 0 a 0 b 0 c

pyraclostrobin/fluxapyroxad (Priaxor) BASF 500 EC 150 g ai/ha POST A 5 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 a 0 a 0 a 0 b 0 a 0 b 0 c

pyraclostrobin/metconazole (Twinline) BASF 210 EC 105 g ai/ha POST A 6 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 a 0 a 0 a 0 b 0 a 1 b 1 bc

trifloxystrobin/propiconazole (Stratego) Baye 250 EC 200 g ai/ha POST A 7 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 a 0 a 0 a 0 ab 0 a 0 b 0 bc

azoxystrobin/propiconazole (Quilt) Syngenta 200 EC 200 g ai/ha POST A 8 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 a 0 a 0 a 0 b 0 a 1 b 1 b

EXP # 1 325 SC 185.7 g ai/ha POST A LSD (P=.05) 0.0 0.0 0.0 1.1 0.4 3.1 0.8 Standard Deviation 0.0 0.0 0.0 0.7 0.2 1.8 0.4 CV 0.0 0.0 0.0 156.02 489.9 41.49 43.64

2

EFFECT OF GLYPHOSATE PLUS FUNGICIDE APPLIED AT V4-V6 ON CROP INJURY, WEED CONTROL, DISEASE CONTROL AND CORN YIELD I (14, 15, 16)


Crop Code ZEAMX ZEAMX ZEAMX ZEAMX Description EYESPOT EYESPOT Rating Date Jul-30-15 Jul-30-15 Nov-3-15 Nov-3-15 Rating Type INCIDENCE SEVERITY YIELD YIELD Rating Unit % % T/HA BU/AC Crop Stage Majority R1 R1 Trt-Eval Interval 56 DA-A 56 DA-A 152 DA-A 152 DA-A

Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 8 9 12 13

1 Control 37 a 8 a 10.85 ab 172.9 ab 2 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 27 b 10 a 10.22 b 162.8 b 3 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 5 c 1 b 11.52 a 183.5 a

pyraclostrobin (Headline) BASF 250 EC 100 g ai/ha POST A 4 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 2 c 1 b 11.71 a 186.5 a

pyraclostrobin/fluxapyroxad (Priaxor) BASF 500 EC 150 g ai/ha POST A 5 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 5 c 1 b 11.57 a 184.4 a

pyraclostrobin/metconazole (Twinline) BASF 210 EC 105 g ai/ha POST A 6 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 6 c 1 b 10.84 ab 172.7 ab

trifloxystrobin/propiconazole (Stratego) Baye 250 EC 200 g ai/ha POST A 7 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 9 c 2 b 11.19 ab 178.2 ab

azoxystrobin/propiconazole (Quilt) Syngenta 200 EC 200 g ai/ha POST A 8 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 5 c 2 b 11.26 ab 179.5 ab

EXP # 1 325 SC 185.7 g ai/ha POST A LSD (P=.05) 8.5 5.7 1.172 18.68 Standard Deviation 4.9 3.2 0.669 10.67 CV 40.7 99.93 6.01 6.01

Conclusions: This experiment was established to determine the effect of adding a fungicide [pyraclostrobin (Headline), pyraclostrobin/fluxapyroxad (Priaxor), pyraclostrobin/metconazole (Twinline), trifoxystrobin/propiconazole (Stratego), azoxystrobin/propiconazole (Quilt) or EXP #1)] to glyphosate on corn injury, disease control, and corn yield. This experiment was maintained weed-free to eliminate the confounding effect of weed interference. At 7, 14 and 28 DAA, there was no injury in corn from the glyphosate + fungicide combinations evaluated. At 18 DAA, there was minimal disease present. At 28 and 56 DAA, the incidence and severity of eyespot in the control was 17 and 37%, respectively. At 28 and 56 DAA, the use of a fungicide reduced eyespot incidence to 0-1 and 2-9%, respectively. There was no appreciable difference in eyespot incidence or severity among the fungicides evaluated. There was no improvement in corn yield with the addition of a fungicide to glyphosate.

3

EFFECT OF GLYPHOSATE PLUS FUNGICIDE APPLIED AT V4-V6 ON CROP INJURY, WEED CONTROL, DISEASE CONTROL AND CORN YIELD II (14,15,16)

HOLLY BYKER/LYNETTE BROWN, PETER SIKKEMA EXPERIMENT ID: FC15C1B


Expt. Design: RACOBL. Reps: 3. Plot Size: 2 m x 10 m. Expt. Location: RC - Range J3-B.





Time of Day: 6:45 am Height : 80-96CM

Timing : POST

Air Temp. : 22.8 C Weed 1

% Humidity : 90 Height:

Wind Speed : 2.1 kph Density :

Dew Present: Y

Soil Temp.: 21 C

Soil Moist.: wet

Cloud Cover: 60%

Equipment :

Pressure : 207

Nozzle Type: LOW DRIFT

Nozzle Size: ULD120-02

Noz.Spacing: 50 CM

Boom Length: 2 M

Boom Height: 50 CM

Carrier : WATER


Propellant : CO2

Crop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX Rating Date Jun-22-15 Jun-29-15 Jul-6-15 Jul-13-15 Jun-29-15 Jun-29-15 Rating Type INJURY INJURY INJURY INJURY EYE BLOTCH LEAF BLOTCH Rating Unit % % % % % % Crop Stage Majority V7 V13-V14 V14-V15 Crop Stage Scale 100-115c 164-182C 186-220C Trt-Eval Interval 7 DA-A 14 DA-A 21 DA-A 28 DA-A 14 DA-A 14 DA-A

Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5 6

1 Weedy check 0 a 0 a 0 a 0 a 3 a 2 a 2 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 a 0 a 0 a 0 a 2 a 1 a 3 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 a 0 a 0 a 0 a 2 a 1 a

pyraclostrobin (Headline) BASF 250 EC 100 g ai/ha POST A 4 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 a 0 a 0 a 0 a 2 a 1 a

pyraclostrobin/fluxapyroxad (Priaxor) BASF 500 EC 150 g ai/ha POST A 5 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 a 0 a 0 a 0 a 2 a 1 a

pyraclostrobin/metconazole (Twinline) BASF 210 EC 105 g ai/ha POST A 6 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 a 0 a 0 a 0 a 1 a 2 a

trifloxystrobin/propiconazole (Stratego) Baye 250 EC 200 g ai/ha POST A 7 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 a 0 a 0 a 0 a 2 a 1 a

azoxystrobin/propiconazole (Quilt) Syngenta 200 EC 200 g ai/ha POST A 8 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 a 0 a 0 a 0 a 1 a 1 a

EXP # 1 325 SC 185.7 g ai/ha POST A LSD (P=.05) 0.0 0.0 0.0 0.0 2.6 1.5 Standard Deviation 0.0 0.0 0.0 0.0 1.5 0.8 CV 0.0 0.0 0.0 0.0 80.29 68.77

4

EFFECT OF GLYPHOSATE PLUS FUNGICIDE APPLIED AT V4-V6 ON CROP INJURY, WEED CONTROL, DISEASE CONTROL AND CORN YIELD II (14, 15,16)


Crop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX Description EYE SPOT EYE SPOT EYE SPOT EYE SPOT Rating Date Jul-13-15 Jul-13-15 Aug-10-15 Aug-10-15 Nov-3-15 Nov-3-15 Rating Type INCIDENCE SEVERITY INCIDENCE SEVERITY YIELD YIELD Rating Unit % % % % T/HA BU/AC Crop Stage Majority V14-V15 V14-V15 R1 R1 Crop Stage Scale 186-220C 186-220C 227-256C 227-256C Trt-Eval Interval 28 DA-A 28 DA-A 56 DA-A 56 DA-A 141 DA-A 141 DA-A


1 Weedy check 32 a 7 a 40 a 9 b 10.83 a 172.5 a 2 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 23 b 6 b 38 a 10 a 10.73 a 171.0 a 3 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 c 0 c 5 b 1 c 10.88 a 173.4 a

pyraclostrobin (Headline) BASF 250 EC 100 g ai/ha POST A 4 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 c 0 c 3 b 1 c 10.22 a 162.8 a

pyraclostrobin/fluxapyroxad (Priaxor) BASF 500 EC 150 g ai/ha POST A 5 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 c 0 c 5 b 2 c 11.31 a 180.2 a

pyraclostrobin/metconazole (Twinline) BASF 210 EC 105 g ai/ha POST A 6 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 c 0 c 4 b 2 c 10.60 a 168.9 a

trifloxystrobin/propiconazole (Stratego) Baye 250 EC 200 g ai/ha POST A 7 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 c 0 c 5 b 2 c 10.19 a 162.3 a

azoxystrobin/propiconazole (Quilt) Syngenta 200 EC 200 g ai/ha POST A 8 glyphosate (Weathermax) 540 SN 900 g ai/ha POST A 0 c 0 c 5 b 2 c 9.41 a 150.0 a

EXP # 1 325 SC 185.7 g ai/ha POST A LSD (P=.05) 2.4 0.7 2.3 1.1 2.253 35.90 Standard Deviation 1.4 0.4 1.3 0.6 1.286 20.50 CV 20.23 25.78 10.01 18.04 12.23 12.23

Conclusions: This experiment was established to determine the effect of adding a fungicide [pyraclostrobin (Headline), pyraclostrobin/fluxapyroxad (Priaxor), pyraclostrobin/metconazole (Twinline), trifoxystrobin/propiconazole (Stratego), azoxystrobin/propiconazole (Quilt) or EXP #1)] to glyphosate on corn injury, disease control, and corn yield. This experiment was maintained weed-free to eliminate the confounding effect of weed interference. At 7, 14, 21 and 28 DAA, there was no injury in corn from the glyphosate + fungicide combinations evaluated. At 14 DAA, there was minimal disease present. At 28 and 56 DAA, the incidence and severity of eyespot in the control was 32 and 40 %, respectively. At 28 and 56 DAA , the use of a fungicide reduced eyespot incidence to 0 and 3-5%, respectively. There was no difference in eyespot incidence or severity among the fungicides evaluated. There was no improvement in corn yield with the addition of a fungicide to glyphosate.

5

TOLERANCE OF CORN TO HALOSULFURON APPLIED PRE AND POST I

CHRISTY SHROPSHIRE, PETER SIKKEMA EXPERIMENT ID: FC15C2A

CROP: ZEAMX, Corn (RR & LL) (DKC53-56RIB). Planted: May-1-15, 78800 SEEDS/HA, 5 CM Deep, 75 CM Row Width. Planting Method: CONV.

Emerged On: May-9-15.

Expt. Design: RACOBL. Reps: 4. Plot Size: 1.5 m x 10 m. Expt. Location: RC - Range N8.


APPLICATION DESCRIPTION

Application: A B C D E

Date : May-5-15 May-14-15 May-28-15 Jun-2-15 Jun-11-15

Time of Day: 08:45 08:30 13:30 16:50 14:30

Timing : PRE V1 V3 V5 V7

Air Temp. : 13.1 C 13.0 C 23.4 C 19.1 C 22.0 C

% Humidity : 51 51.9 61.2 68.1 63.3

Wind Speed : 2.3 KM/H 0.8 KM/H 4.2 KM/H 3.7 KM/H 2.0 KM/H

Dew Present: N Y N N N

Soil Temp.: 12.9 C 9.6 C 26.9 C 23.2 C 23.5 C

Soil Moist.: AT DEPTH AT DEPTH MOIST WET MOIST

Cloud Cover: 100% 20% 5% 0% 100%

Equipment :

Pressure : 207 207 207 207 207

Nozzle Type: LOW DRIFT LOW DRIFT LOW DRIFT LOW DRIFT LOW DRIFT

Nozzle Size: ULD120-02 ULD120-02 ULD120-02 ULD120-02 ULD120-02

Noz.Spacing: 50 CM 50 CM 50 CM 50 CM 50 CM

Boom Length: 1.5 M 1.5 M 1.5 M 1.5 M 1.5 M

Boom Height: 50 CM 50 CM 50 CM 50 CM 50 CM

Carrier : WATER WATER WATER WATER WATER

Appl.Volume: 200 L/ha 200 L/ha 200 L/ha 200 L/ha 200 L/ha

Propellant : CO2 CO2 CO2 CO2 CO2

STAGE AT APPLICATION

Crop 1 ZEAMX NOT EM V1 V3-V4 V5 V7

Height : - 9 CM 24 CM 50 CM 75 CM

Crop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX

Part Rated 10 PLA -

Rating Date Jul-9-15 Aug-6-15 Jun-25-15 Nov-3-15 Nov-3-15

Rating Type INJURY INJURY INJURY INJURY AV HEIGHT YIELD YIELD

Rating Unit % % % % CM T/HA BU/AC

Crop Stage Majority V15-R1 R4

Crop Stage Scale 2.1-2.5M 2.5-3M

Footnote Number 1 2

Trt-Eval Interval 7 DA_ 14 DA_ 28 DA-E 56 DA-E 14 DA-E 145 DA-E 145 DA-E


1 Untreated control 0 f 0 d 0 b 0 a 180 ab 17.71 ab 282.1 ab

2 halosulfuron 75 WG 70 g AI/ha PRE A 0 f 0 d 0 b 0 a 174 cde 17.17 abc 273.5 abc

Agral 90 1000 SN 0.250 % V/V PRE A 3 halosulfuron 75 WG 140 g AI/ha PRE A 0 f 0 d 0 b 0 a 171 cde 16.69 bcd 265.9 bcd

Agral 90 1000 SN 0.250 % V/V PRE A 4 halosulfuron 75 WG 70 g AI/ha POST B 0 f 0 d 0 b 0 a 175 bcd 17.01 abc 271.0 abc

Agral 90 1000 SN 0.250 % V/V POST B 5 halosulfuron 75 WG 140 g AI/ha POST B 0 f 0 d 0 b 0 a 171 de 16.63 bcd 264.9 bcd

Agral 90 1000 SN 0.250 % V/V POST B 6 halosulfuron 75 WG 70 g AI/ha POST C 16 d 9 b 0 b 0 a 177 abc 17.13 abc 273.0 abc

Agral 90 1000 SN 0.250 % V/V POST C 7 halosulfuron 75 WG 140 g AI/ha POST C 23 c 16 a 0 b 0 a 174 cd 17.55 ab 279.6 ab

Agral 90 1000 SN 0.250 % V/V POST C 8 halosulfuron 75 WG 70 g AI/ha POST D 25 c 8 b 0 b 0 a 176 bcd 16.92 a-d 269.6 a-d

Agral 90 1000 SN 0.250 % V/V POST D 9 halosulfuron 75 WG 140 g AI/ha POST D 36 a 15 a 4 a 0 a 172 cde 16.16 cd 257.5 cd

Agral 90 1000 SN 0.250 % V/V POST D 10 halosulfuron 75 WG 70 g AI/ha POST E 10 e 6 c 0 b 0 a 168 e 16.85 a-d 268.5 a-d

Agral 90 1000 SN 0.250 % V/V POST E 11 halosulfuron 75 WG 140 g AI/ha POST E 17 d 10 b 5 a 0 a 161 f 15.87 d 252.8 d

Agral 90 1000 SN 0.250 % V/V POST E 12 glyphosate (Roundup Weathermax) 540 SL 1800 g AI/ha POST D 0 f 0 d 0 b 0 a 182 a 17.97 a 286.3 a

13 glyphosate (Roundup Weathermax) 540 SL 1800 g AI/ha POST D 25 c 8 b 0 b 0 a 174 cde 16.89 a-d 269.0 a-d

halosulfuron 75 WG 70 g AI/ha POST D Agral 90 1000 SN 0.250 % V/V POST D

14 glyphosate (Roundup Weathermax) 540 SL 1800 g AI/ha POST D 31 b 15 a 4 a 0 a 172 cde 16.65 bcd 265.3 bcd

halosulfuron 75 WG 140 g AI/ha POST D Agral 90 1000 SN 0.250 % V/V POST D

LSD (P=.05) 3.0 2.1 1.6 0.0 5.7 1.136 18.10

Standard Deviation 2.1 1.5 1.1 0.0 4.0 0.795 12.67

CV 15.91 24.15 122.58 0.0 2.3 4.69 4.69

Footnote Number 1: T.2-3, MAY-15-15 (6 DA-Em): V1, 7-10 CM; T.4-5 MAY-21-15 (7 DA-B): V2, 10-20 CM; T.6-7 JUN-5-15 (8 DA-C): V5, 45-60 CM; T.8-9&12-14, JUN-9-15 (7 DA-D): V6, 60-80 CM; T.10-11, JUN-17-15 (6 DA-E): V8-V9, 1-1.3 M. INJURY: CHLOROSIS IN WHORL, STUNTING. Footnote Number 2: T.2-3, MAY-22-15 (13 DA-Em): V2, 10-20 CM; T.4-5 MAY-29-15 (15 DA-B): V4, 30-40 CM; T.6-7 JUN-12-15 (15 DA-C): V7, 70-85 CM; T.8-9&12-14, JUN-16-15(14 DA-D): V8, 1-1.3 M; T.10-11, JUN-25-15 (14 DA-E): V11, 1.6-1.9 M. INJURY: STUNTING.

6

TOLERANCE OF CORN TO HALOSULFURON APPLIED PRE AND POST I


Conclusions: This experiment was established to determine the tolerance of corn to halosulfuron (70 and 140 g/ha) applied at PRE, V1, V3, V5 and V7. In addition, at V5 a

tankmix with glyphosate was included to determine if the adjuvant in Roundup Weathermax accentuates the injury from halosulfuron. At 7, 14, 28 and 56 DAA, halosulfuron (70 and 140 g/ha) applied PRE caused no visible injury in corn, however there was a decrease in height (1X and 2X rate). There was no delay in corn maturity (as indicated by moisture content at harvest) and no decrease in corn yield. In general, halosulfuron (70 and 140 g/ha) caused increasing injury as the POST application was delayed. Halosulfuron (140 g/ha) applied at V1, V3, V5 and V7 caused 0, 23, 36 and 17% corn injury 7 DAA, respectively. The injury decreased with time, as halosulfuron (140 g/ha) applied at V1, V3, V5 and V7 caused 0, 0, 0 and 0% visible corn injury 56 DAA, respectively. There was no increase in injury when halosulfuron was applied in a tankmix with glyphosate. The late application (V5) resulted in a decrease in the height of the corn. There was a decrease in corn yield when halosulfuron was applied at the 2X rate at V5 and V7

7

.TOLERANCE OF CORN TO HALOSULFURON APPLIED PRE AND POST II



Expt. Design: RACOBL. Reps: 3. Plot Size: 1.5 m x 10 m. Expt. Location: RC - Range J3-B.


APPLICATION DESCRIPTION

Application: A B C D E

Date : May-5-15 May-16-15 May-29-15 Jun-9-15 Jun-17-15

Time of Day: 11:15 am 1:40pm 11:00am 6:45pm 8:30am

Air Temp. : 14.9 C 20.6 C 23.0 C 22.6 C 21.2 C

% Humidity : 49 74 57 69 88

Wind Speed : 6 kph 1.9 kph 5 kph 3.9 kph 1.2 kph

Dew Present: N N N N Y

Soil Temp.: 16 C 28 C 24 C 24 C 19 C

Soil Moist.: dry dry damp depth damp wet

Cloud Cover: 100% 100% 100% 30% 100%

Pressure : 207 207 207 207 207

Nozzle Type: LOW DRIFT LOW DRIFT LOW DRIFT LOW DRIFT LOW DRIFT

Nozzle Size: ULD120-02 ULD120-02 ULD120-02 ULD120-02 ULD120-02

Noz.Spacing: 50 CM 50 CM 50 CM 50 CM 50 CM

Boom Length: 1.5 M 1.5 M 1.5 M 1.5 M 1.5 M

Boom Height: 50 CM 50 CM 50 CM 50 CM 50 CM

Carrier : WATER WATER WATER WATER WATER

Appl.Volume: 200 L/ha 200 L/ha 200 L/ha 200 L/ha 200 L/ha

Propellant : CO2 CO2 CO2 CO2 CO2

STAGE AT APPLICATION

Crop 1 ZEAMX PRE V1 V3 V5 V7

Height : 10 CM 25 CM 60 CM 80 CM

Crop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX

Rating Date Jul-16-15 Aug-13-15 Jul-2-15 Nov-3-15 Nov-3-15

Rating Type INJURY INJURY INJURY INJURY HEIGHT YIELD YIELD

Rating Unit % % % % CM T/HA BU/AC

Crop Stage Majority V11-V12 R1 V10-V11

Crop Stage Scale 195-208C 231-245C 164-182C

Footnote Number 2 3 1 1 1

Trt-Eval Interval 7 DA- 14 DA- 28 DA-E 56 DA-E 14 DA-E


1 Untreated control 0 c 0 c 0 d 0 b 139.7 a 9.58 a 152.7 a

2 halosulfuron 75 WG 70 g ai/ha PRE A 0 c 0 c 0 d 0 b 134.7 abc 8.43 ab 134.2 ab

Agral 90 1000 SN 0.250 % v/v PRE A 3 halosulfuron 75 WG 140 g ai/ha PRE A 0 c 0 c 0 d 0 b 131.9 abc 6.99 b 111.3 b

Agral 90 1000 SN 0.250 % v/v PRE A 4 halosulfuron 75 WG 70 g ai/ha POST B 0 c 0 c 0 d 0 b 125.5 bc 8.45 ab 134.7 ab

Agral 90 1000 SN 0.250 % v/v POST B 5 halosulfuron 75 WG 140 g ai/ha POST B 0 c 0 c 0 d 0 b 123.8 c 6.97 b 111.1 b

Agral 90 1000 SN 0.250 % v/v POST B 6 halosulfuron 75 WG 70 g ai/ha POST C 3 bc 0 c 0 d 0 b 128.4 abc 7.50 ab 119.5 ab

Agral 90 1000 SN 0.250 % v/v POST C 7 halosulfuron 75 WG 140 g ai/ha POST C 6 ab 0 bc 0 d 0 b 129.8 abc 8.28 ab 131.9 ab

Agral 90 1000 SN 0.250 % v/v POST C 8 halosulfuron 75 WG 70 g ai/ha POST D 4 ab 0 c 1 c 0 b 131.6 abc 8.78 ab 139.8 ab

Agral 90 1000 SN 0.250 % v/v POST D 9 halosulfuron 75 WG 140 g ai/ha POST D 6 ab 1 abc 2 b 1 b 130.7 abc 8.15 ab 129.9 ab

Agral 90 1000 SN 0.250 % v/v POST D 10 halosulfuron 75 WG 70 g ai/ha POST E 3 abc 1 ab 2 b 0 b 132.1 abc 8.77 ab 139.8 ab

Agral 90 1000 SN 0.250 % v/v POST E 11 halosulfuron 75 WG 140 g ai/ha POST E 3 bc 1 ab 2 b 1 b 133.4 abc 9.30 ab 148.1 ab

Agral 90 1000 SN 0.250 % v/v POST E 12 glyphosate (Roundup Weathermax) 540 SL 1800 g ai/ha POST D 0 c 1 abc 0 d 0 b 139.8 a 8.91 ab 141.9 ab

13 glyphosate (Roundup Weathermax) 540 SL 1800 g ai/ha POST D 7 a 1 abc 2 b 1 b 138.6 a 9.19 ab 146.5 ab

halosulfuron 75 WG 70 g ai/ha POST D Agral 90 1000 SN 0.250 % v/v POST D

14 glyphosate (Roundup Weathermax) 540 SL 1800 g ai/ha POST D 3 bc 2 a 5 a 2 a 135.4 ab 9.06 ab 144.4 ab

halosulfuron 75 WG 140 g ai/ha POST D Agral 90 1000 SN 0.250 % v/v POST D

LSD (P=.05) 3.9 1.0 0.8 1.0 11.41 2.340 37.27

Standard Deviation 2.3 0.6 0.5 0.6 6.79 1.394 22.20

CV 94.27 114.09 45.6 177.9 5.13 16.48 16.48

Footnotes: 1: INJURY SYMPTOMS: GOOSE NECKING IN STALK AND SLIGHT STUNTING; 2: 7 DA-EM - MAY 17, V1, 12-17CM; 6 DA-B - MAY 22, V2, 12-17CM; 6 DA-C - JUNE 4, V4, 19-35CM; 7 DA-D, JUNE 16, V6, 45-85CM; 8 DA-E - JUNE 26, V9-10; 3: 14 DA-EM - MAY 24, V2, 12-19CM; 13 DA-B - MAY 29, V3, 19-31CM; 14 DA-C - JUNE 12,

V6, 40-65CM; 14 DA-D, JUNE 23, V8-9, 83-95CM; 14 DA-E - JULY 16, V11-12, 195-208CM Conclusions: This experiment was established to determine the tolerance of corn to halosulfuron (70 and 140 g/ha) applied at PRE, V1, V3, V5 and V7. In addition, at V5 a tankmix with glyphosate was included to determine if the adjuvant in Roundup Weathermax accentuates the injury from halosulfuron. At 7, 14, 28 and 56 DAA, halosulfuron (70 and 140 g/ha) applied PRE caused no injury in corn. In addition, there was no decrease in height (14 DAA), but there was a decrease in corn yield at the 2X rate. In general, halosulfuron (70 and 140 g/ha) caused increasing injury as the POST application was delayed. Halosulfuron (140 g/ha) applied at V1, V3, V5 and V7 caused 0, 6, 6 and 3% corn injury 7 DAA, respectively. The injury decreased with time, as halosulfuron (140 g/ha) applied at V1, V3, V5 and V7 caused 0, 0, 1 and 1% corn injury 56 DAA, respectively. There was a trend to increased injury when halosulfuron was applied in a tankmix with glyphosate. There was no consistent effect of halosulfuron rate or timing on corn height. Halosulfuron (70 and 140 g/ha) applied at V1 caused a decrease in corn height. There was no negative effect on corn yield with the application of halosulfuron with one exception, there was a decrease in corn yield when halosulfuron was applied at the 2X rate at V1.

8

BIOLOGICALLY EFFECTIVE RATE OF HALOSULFURON APPLIED POSTEMERGENCE IN CORN I



Expt. Design: RACOBL. Reps: 4. Plot Size: 2 m x 10 m. Expt. Location: RC - Range G2.

Site Description: Soil Texture: CL. %OM: 3.8 %Sand: 33.0 %Silt: 34.0 %Clay: 33.0 pH: 6.7 CEC: 15.0.




Time of Day: 7:30 am Height : 35 CM

Timing :

Air Temp. : 14.5 C Weed 1 ABUTH 2lf

% Humidity : 90 Height: 3lf

Wind Speed : 2.7 kph Density : 26 M2

Dew Present: N Weed 2 AMBEL 6lf

Soil Temp.: 15 C Height: 10lf

Soil Moist.: wet-damp Density : 7 M2

Cloud Cover: 100% Weed 3 CHEAL 10lf

Equipment : Height: 20+lf

Pressure : 207 Density : 23 M2

Nozzle Type: LOW DRIFT Weed 4 POLPE 6LF

Nozzle Size: ULD120-02 Height: 10LF

Noz.Spacing: 50 CM Density : 32 M2

Boom Length: 2 M Weed 5 SOLPT NO EM

Boom Height: 50 CM Height:

Carrier : WATER Density : 0 /M2


Propellant : CO2

Pest Code ABUTH AMBEL CHEAL POLPE SOLPT ABUTH Crop Code ZEAMX ZEAMX ZEAMX ZEAMX Rating Date Jun-12-15 Jun-19-15 Jul-1-15 Jun-22-15 Jun-22-15 Jun-22-15 Jun-22-15 Jun-22-15 Jul-1-15 Rating Type INJURY INJURY INJURY CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % % Crop Stage Majority V5 V7 V9-10 V7-V8 V7-V8 V7-V8 V7-V8 V7-V8 V9-10 Crop Stage Scale 25-49cm 80-96CM 119-141C 80-96CM 80-96CM 80-96CM 80-96CM 80-96CM 119-141C Pest Stage Majority 1-6lf cot-10lf cot-20+ 1-20+lf 4-8LF Pest Density, Unit 23 /M2 19 /M2 45 /M2 57 M2 0 M2 13 /M2 Trt-Eval Interval 8 DA-A 15 DA-A 27 DA-A 18 DA-A 18 DA-A 18 DA-A 18 DA-A 18 DA-A 27 DA-A

Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5 6 7 8 9

1 Weedy check 0 e 0 a 0 b 0.0 c 0.0 b 0.0 f 0.0 f 0.0 d 0 c 2 Weed free check 0 e 0 a 0 b 100.0 a 100.0 a 100.0 a 100.0 a 100.0 a 100 a 3 halosulfuron 75 WG 4.375 g ai/ha POST A 1 de 0 a 0 b 68.8 b 77.8 a 7.5 ef 12.5 ef 0.0 d 12 c

Agral 90 1000 SN 0.250 % v/v POST A 4 halosulfuron 75 WG 8.75 g ai/ha POST A 0 de 1 a 0 b 92.5 a 82.0 a 15.0 de 54.5 cd 1.3 d 63 b

Agral 90 1000 SN 0.250 % v/v POST A 5 halosulfuron 75 WG 17.5 g ai/ha POST A 2 de 0 a 0 b 97.0 a 77.0 a 13.8 de 28.8 de 2.5 cd 88 a

Agral 90 1000 SN 0.250 % v/v POST A 6 halosulfuron 75 WG 35 g ai/ha POST A 2 d 1 a 0 b 100.0 a 94.5 a 22.4 d 71.3 bc 12.5 b 100 a

Agral 90 1000 SN 0.250 % v/v POST A 7 halosulfuron 75 WG 70 g ai/ha POST A 6 c 1 a 0 b 100.0 a 90.8 a 27.0 d 82.0 ab 7.5 bcd 100 a

Agral 90 1000 SN 0.250 % v/v POST A 8 halosulfuron 75 WG 140 g ai/ha POST A 7 c 0 a 1 b 100.0 a 97.5 a 46.3 c 81.7 abc 10.0 bc 100 a

Agral 90 1000 SN 0.250 % v/v POST A 9 halosulfuron 75 WG 280 g ai/ha POST A 11 b 1 a 0 b 100.0 a 81.3 a 72.8 b 94.3 ab 13.8 b 100 a

Agral 90 1000 SN 0.250 % v/v POST A 10 halosulfuron 75 WG 560 g ai/ha POST A 14 a 1 a 2 a 100.0 a 98.8 a 82.0 b 96.5 ab 13.8 b 100 a

Agral 90 1000 SN 0.250 % v/v POST A LSD (P=.05) 1.8 1.3 0.7 7.55 32.02 13.44 27.46 8.43 16.6 Standard Deviation 1.2 0.9 0.5 5.20 22.07 9.25 18.72 5.80 11.4 CV 29.22 289.74 168.18 6.06 27.6 23.91 30.13 35.96 14.92

9

BIOLOGICALLY EFFECTIVE RATE OF HALOSULFURON APPLIED POSTEMERGENCE IN CORN I


Pest Code AMBEL CHEAL POLPE SOLPT ABUTH AMBEL CHEAL POLPE SOLPT Crop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX Rating Date Jul-1-15 Jul-1-15 Jul-1-15 Jul-1-15 Jul-30-15 Jul-30-15 Jul-30-15 Jul-30-15 Jul-30-15 Rating Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % % Crop Stage Majority V9-10 V9-10 V9-10 V9-10 R1 R1 R1 R1 R1 Crop Stage Scale 119-141C 119-141C 119-141C 119-141C 260-277C 260-277C 260-277C 260-277C 260-277C Pest Stage Majority 6-20+LF 8-20+LF 4LF-FLWR 4-6LF 3LF-FLWR 20+LF-BD 4LF-BUD FLWR 4LF-FLWR Pest Density, Unit 10 /M2 17.5/M2 28.5/M2 3.5 /M2 12.5/M2 13.5/M2 18 /M2 49 /M2 3.5 /M2 Trt-Eval Interval 27 DA-A 27 DA-A 27 DA-A 27 DA-A 56 DA-A 56 DA-A 56 DA-A 56 DA-A 56 DA-A


1 Weedy check 0 d 0 e 0 e 0 c 0 c 0 e 0 e 0 c 0 d 2 Weed free check 100 a 100 a 100 a 100 a 100 a 100 a 100 a 100 a 100 a 3 halosulfuron 75 WG 4.375 g ai/ha POST A 44 c 16 de 6 de 0 c 5 c 63 d 28 d 0 c 0 d

Agral 90 1000 SN 0.250 % v/v POST A 4 halosulfuron 75 WG 8.75 g ai/ha POST A 57 bc 36 cd 16 de 3 bc 65 b 76 cd 38 cd 0 c 0 d

Agral 90 1000 SN 0.250 % v/v POST A 5 halosulfuron 75 WG 17.5 g ai/ha POST A 99 a 30 de 18 de 1 c 91 a 100 ab 44 cd 3 c 0 d

Agral 90 1000 SN 0.250 % v/v POST A 6 halosulfuron 75 WG 35 g ai/ha POST A 93 a 26 de 50 bc 4 bc 100 a 93 ab 36 cd 38 b 0 d

Agral 90 1000 SN 0.250 % v/v POST A 7 halosulfuron 75 WG 70 g ai/ha POST A 80 ab 18 de 30 cd 3 bc 100 a 85 bc 46 c 40 b 0 d

Agral 90 1000 SN 0.250 % v/v POST A 8 halosulfuron 75 WG 140 g ai/ha POST A 100 a 61 bc 98 a 4 bc 100 a 100 a 73 b 98 a 14 c

Agral 90 1000 SN 0.250 % v/v POST A 9 halosulfuron 75 WG 280 g ai/ha POST A 80 ab 73 ab 75 ab 4 bc 100 a 95 ab 83 b 74 a 14 c

Agral 90 1000 SN 0.250 % v/v POST A 10 halosulfuron 75 WG 560 g ai/ha POST A 100 a 83 ab 100 a 8 b 100 a 100 a 76 b 100 a 23 b

Agral 90 1000 SN 0.250 % v/v POST A LSD (P=.05) 32.8 30.2 29.1 5.2 14.0 14.7 17.0 27.7 7.4 Standard Deviation 22.5 20.7 19.8 3.6 9.6 10.1 11.6 18.8 5.1 CV 29.87 46.82 40.12 28.21 12.56 12.45 22.27 41.53 34.01

Crop Code ZEAMX ZEAMX Rating Date Nov-4-15 Nov-4-15 Rating Type YIELD YIELD Rating Unit T/HA BU/AC Trt-Eval Interval 153 DA-A 153 DA-A

Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 31 32

1 Weedy check 7.32 d 116.6 d 2 Weed free check 12.94 a 206.2 a 3 halosulfuron 75 WG 4.375 g ai/ha POST A 9.13 bcd 145.5 bcd

Agral 90 1000 SN 0.250 % v/v POST A 4 halosulfuron 75 WG 8.75 g ai/ha POST A 8.07 cd 128.6 cd

Agral 90 1000 SN 0.250 % v/v POST A 5 halosulfuron 75 WG 17.5 g ai/ha POST A 8.90 bcd 141.7 bcd

Agral 90 1000 SN 0.250 % v/v POST A 6 halosulfuron 75 WG 35 g ai/ha POST A 10.08 bc 160.6 bc

Agral 90 1000 SN 0.250 % v/v POST A 7 halosulfuron 75 WG 70 g ai/ha POST A 10.87 ab 173.1 ab




Agral 90 1000 SN 0.250 % v/v POST A LSD (P=.05) 2.355 37.53 Standard Deviation 1.623 25.86 CV 16.65 16.65

Conclusions: This experiment was established to determine the biologically effective rate of halosulfuron applied postemergence in corn.

At 7, 14 and 28 DAA, halosulfuron at 35 g/ha caused 2, 1 and 0% visible injury, while at 70 g/ha halosulfuron caused 6, 1 and 0% visible injury in corn, respectively. At 7, 14 and 28 DAA, halosulfuron at 560 g/ha caused 14, 1 and 2% visible injury, respectively.

At 14 DAA, the minimum rate of halosulfuron required for 90% control of the following weeds is in brackets: velvetleaf (8.75 g/ha), common ragweed (35 g/ha), lamb’s-quarters (> 560 g/ha), lady’s thumb (280 g/ha) and Eastern black nightshade (>560 g/ha).

At 28 DAA, the minimum rate of halosulfuron required for 90% control of the following weeds is in brackets: velvetleaf (35 g/ha), common ragweed (17.5 g/ha), lamb’s-quarters (> 560 g/ha), lady’s thumb (140 g/ha) and Eastern black nightshade (>560 g/ha).

At 56 DAA, the minimum rate of halosulfuron required for 90% control of the following weeds is in brackets: velvetleaf (17.5 g/ha), common ragweed (17.5 g/ha), lamb’s-quarters (> 560 g/ha), lady’s thumb (140 g/ha) and Eastern black nightshade (>560 g/ha).

In general, there was no difference in corn yield among the herbicide treatments evaluated.

10

BIOLOGICALLY EFFECTIVE RATE OF HALOSULFURON APPLIED POSTEMERGENCE IN CORN II

CHRISTY SHROPSHIRE, PETER SIKKEMA EXPERIMENT ID: FC15C4B



Expt. Design: RACOBL. Reps: 4. Plot Size: 2 m x 10 m. Expt. Location: RC - Range B6.

Site Description: Soil Texture: CL. %OM: 5.5 %Sand: 44.0 %Silt: 28.0 %Clay: 28.0 pH: 6.6 CEC: 15.6.




Time of Day: 20:20 Height : 45 CM

Timing : POST

Air Temp. : 18.0 C Weed 1 ABUTH C-3LF

% Humidity : 85.6 Height: 1-10CM

Wind Speed : 1.4 KM/H Density : 18 /M2

Dew Present: N Weed 2 AMAPO C-18LF

Soil Temp.: 21.7 C Height: 1-20CM

Soil Moist.: MOIST Density : 5 /M2

Cloud Cover: 40% Weed 3 AMBEL C-8LF

Equipment : Height: 1-15CM

Pressure : 207 Density : 64 /M2

Nozzle Type: LOW DRIFT Weed 4 CHEAL C-12LF

Nozzle Size: ULD120-02 Height: 1-9CM

Noz.Spacing: 50 CM Density : 19 /M2

Boom Length: 2 M Weed 5 SOLPT 2-4LF

Boom Height: 50 CM Height: 1-3CM


Appl.Volume: 200 L/ha Weed 6 ECHCG 2-3TIL

Propellant : CO2 Height: 9-14CM

Density : 1 /M2

Weed 7 SETVI 3L-3TL

Height: 4-24CM

Density : 12 /M2

Pest Code ABUTH AMAPO AMBEL CHEAL SOLPT ECHCG SETVI Crop Code ZEAMX ZEAMX ZEAMX Rating Date Jun-16-15 Jun-24-15 Jul-7-15 Jun-24-15 Jun-24-15 Jun-24-15 Jun-24-15 Jun-24-15 Jun-24-15 Jun-24-15 Rating Type INJURY INJURY INJURY CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % % % Crop Stage Majority V7 V9 V15 Crop Stage Scale 70-80CM 1.2-1.5M 1.7-2.1M Pest Stage Majority 4-6LF 8-20+LF 4-20+LF C-20+LF C-6LF 3-6TIL 7L-4TIL Pest Density, Unit 10.5/M2 4 /M2 46 /M2 26 /M2 3.5 /M2 6.5 /M2 10.5/M2 Footnote Number 1 2 3 Trt-Eval Interval 7 DA-A 15 DA-A 28 DA-A 15 DA-A 15 DA-A 15 DA-A 15 DA-A 15 DA-A 15 DA-A 15 DA-A

Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5 6 7 8 9 10

1 Weedy check 0 h 0 e 0 b 0 d 0 f 0 g 0 g 0 c 0 e 0 e

2 Weed free check 0 h 0 e 0 b 100 a 100 a 100 a 100 a 100 a 100 a 100 a 3 halosulfuron 75 WG 4.375 g AI/ha POST A 0 h 0 e 0 b 53 c 29 e 91 f 15 f 0 c 0 e 0 e

Agral 90 1000 SN 0.250 % V/V POST A 4 halosulfuron 75 WG 8.75 g AI/ha POST A 2 g 0 e 0 b 93 b 65 d 95 e 19 f 0 c 0 e 0 e

Agral 90 1000 SN 0.250 % V/V POST A 5 halosulfuron 75 WG 17.5 g AI/ha POST A 7 f 1 e 0 b 99 a 85 c 97 d 25 e 0 c 0 e 0 e

Agral 90 1000 SN 0.250 % V/V POST A 6 halosulfuron 75 WG 35 g AI/ha POST A 10 e 4 e 0 b 100 a 90 b 97 cd 29 de 0 c 0 e 0 e

Agral 90 1000 SN 0.250 % V/V POST A 7 halosulfuron 75 WG 70 g AI/ha POST A 14 d 10 d 0 b 100 a 96 a 98 bc 30 d 5 c 0 e 0 e

Agral 90 1000 SN 0.250 % V/V POST A 8 halosulfuron 75 WG 140 g AI/ha POST A 16 c 15 c 0 b 100 a 98 a 98 bc 31 d 6 c 8 d 8 d

Agral 90 1000 SN 0.250 % V/V POST A 9 halosulfuron 75 WG 280 g AI/ha POST A 19 b 19 b 0 b 100 a 99 a 99 b 36 c 8 c 16 c 16 c

Agral 90 1000 SN 0.250 % V/V POST A 10 halosulfuron 75 WG 560 g AI/ha POST A 26 a 28 a 9 a 100 a 99 a 99 ab 54 b 23 b 31 b 31 b

Agral 90 1000 SN 0.250 % V/V POST A LSD (P=.05) 1.2 4.4 1.1 2.7 4.9 1.1 4.9 9.5 3.5 3.5 Standard Deviation 0.8 3.0 0.8 1.9 3.4 0.7 3.4 6.5 2.4 2.4 CV 8.73 39.63 90.35 2.19 4.42 0.85 9.95 46.34 15.58 15.58

Footnote Number 1: TRT 4: WHORL LEAF WRINKLED AT BASE; TRT 4-10: STUNTING. Footnote Number 2: TRT 5-10: STUNTING, CORN SPIKY (SOME WRAPPED LEAVES) Footnote Number 3: STUNTING

11

BIOLOGICALLY EFFECTIVE RATE OF HALOSULFURON APPLIED POSTEMERGENCE IN CORN II

CHRISTY SHROPSHIRE, PETER SIKKEMA EXPERIMENT ID: FC15C4B

Pest Code ABUTH AMAPO AMBEL CHEAL SOLPT ECHCG SETVI ABUTH AMAPO AMBEL Rating Date Jul-7-15 Jul-7-15 Jul-7-15 Jul-7-15 Jul-7-15 Jul-7-15 Jul-7-15 Aug-4-15 Aug-4-15 Aug-4-15 Rating Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % % % Pest Stage Majority 4L-BUD 8L-FLWR 6-20+LF 4-20+LF 6LF 3L-10TIL 2L-7TIL 4L-FLWR BUD 12L-BUD Pest Density, Unit 5 /M2 11 /M2 36 /M2 20 /M2 0.5 /M2 2 /M2 20 /M2 4.5 /M2 9 /M2 21 /M2 Trt-Eval Interval 28 DA-A 28 DA-A 28 DA-A 28 DA-A 28 DA-A 28 DA-A 28 DA-A 56 DA-A 56 DA-A 56 DA-A

Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 11 12 13 14 15 16 17 18 19 20

1 Weedy check 0 d 0 e 0 g 0 g 0 d 0 f 0 f 0 d 0 f 0 f

2 Weed free check 100 a 100 a 100 a 100 a 100 a 100 a 100 a 100 a 100 a 100 a 3 halosulfuron 75 WG 4.375 g AI/ha POST A 53 c 24 d 92 f 14 f 0 d 0 f 0 f 60 c 36 e 94 e

Agral 90 1000 SN 0.250 % V/V POST A 4 halosulfuron 75 WG 8.75 g AI/ha POST A 93 b 71 c 97 e 19 f 0 d 0 f 0 f 95 b 75 d 97 d

Agral 90 1000 SN 0.250 % V/V POST A 5 halosulfuron 75 WG 17.5 g AI/ha POST A 98 a 87 b 98 de 26 e 0 d 0 f 0 f 99 a 91 c 99 c

Agral 90 1000 SN 0.250 % V/V POST A 6 halosulfuron 75 WG 35 g AI/ha POST A 99 a 93 ab 98 cde 28 de 0 d 0 f 0 f 100 a 95 b 99 bc

Agral 90 1000 SN 0.250 % V/V POST A 7 halosulfuron 75 WG 70 g AI/ha POST A 100 a 97 a 98 cde 34 cd 3 cd 5 e 5 e 100 a 98 ab 100 ab

Agral 90 1000 SN 0.250 % V/V POST A 8 halosulfuron 75 WG 140 g AI/ha POST A 100 a 98 a 99 bcd 36 c 5 cd 14 d 14 d 100 a 99 ab 100 ab

Agral 90 1000 SN 0.250 % V/V POST A 9 halosulfuron 75 WG 280 g AI/ha POST A 100 a 100 a 99 abc 48 b 9 c 23 c 23 c 100 a 100 a 100 ab

Agral 90 1000 SN 0.250 % V/V POST A 10 halosulfuron 75 WG 560 g AI/ha POST A 100 a 100 a 100 ab 50 b 24 b 39 b 39 b 100 a 100 a 100 a

Agral 90 1000 SN 0.250 % V/V POST A LSD (P=.05) 4.7 7.7 1.4 7.4 7.8 2.6 2.6 3.8 4.2 1.0

Standard Deviation 3.2 5.3 0.9 5.1 5.4 1.8 1.8 2.6 2.9 0.7 CV 3.82 6.9 1.07 14.46 38.45 10.0 10.0 3.11 3.69 0.74

Pest Code CHEAL SOLPT ECHCG SETVI Crop Code ZEAMX ZEAMX Rating Date Aug-4-15 Aug-4-15 Aug-4-15 Aug-4-15 Nov-5-15 Nov-5-15 Rating Type CONTROL CONTROL CONTROL CONTROL YIELD YIELD Rating Unit % % % % T/HA BU/AC Pest Stage Majority 4L-BUD 4L-FLWR 2TL-FLWR 3L-FLWR Pest Density, Unit 25 /M2 7 /M2 Trt-Eval Interval 56 DA-A 56 DA-A 56 DA-A 56 DA-A 149 DA-A 149 DA-A


1 Weedy check 0 h 0 d 0 f 0 f 9.86 e 157.1 e

2 Weed free check 100 a 100 a 100 a 100 a 13.55 a 215.9 a 3 halosulfuron 75 WG 4.375 g AI/ha POST A 14 g 0 d 0 f 0 f 10.75 de 171.2 de

Agral 90 1000 SN 0.250 % V/V POST A 4 halosulfuron 75 WG 8.75 g AI/ha POST A 20 fg 0 d 0 f 0 f 11.01 cde 175.3 cde

Agral 90 1000 SN 0.250 % V/V POST A 5 halosulfuron 75 WG 17.5 g AI/ha POST A 28 ef 0 d 0 f 0 f 11.64 bcd 185.4 bcd

Agral 90 1000 SN 0.250 % V/V POST A 6 halosulfuron 75 WG 35 g AI/ha POST A 35 de 0 d 0 f 0 f 11.38 b-e 181.3 b-e

Agral 90 1000 SN 0.250 % V/V POST A 7 halosulfuron 75 WG 70 g AI/ha POST A 40 cd 0 d 5 e 5 e 11.29 b-e 179.8 b-e

Agral 90 1000 SN 0.250 % V/V POST A 8 halosulfuron 75 WG 140 g AI/ha POST A 45 cd 3 cd 14 d 14 d 12.64 ab 201.4 ab

Agral 90 1000 SN 0.250 % V/V POST A 9 halosulfuron 75 WG 280 g AI/ha POST A 51 bc 8 c 23 c 23 c 12.36 abc 196.9 abc

Agral 90 1000 SN 0.250 % V/V POST A 10 halosulfuron 75 WG 560 g AI/ha POST A 59 b 24 b 31 b 31 b 12.27 a-d 195.5 a-d

Agral 90 1000 SN 0.250 % V/V POST A LSD (P=.05) 12.1 6.6 3.8 3.8 1.596 25.42 Standard Deviation 8.4 4.6 2.6 2.6 1.100 17.52 CV 21.35 34.11 15.17 15.17 9.42 9.42

Conclusions: This experiment was established to determine the biologically effective rate of halosulfuron applied postemergence in corn. At 7, 14 and 28 DAA, halosulfuron at 35 g/ha caused 10, 4 and 0% visible injury, while at halosulfuron at 70 g/ha halosulfuron caused 14, 10 and 0% visible injury in corn, respectively. At 7, 14 and 28 DAA, halosulfuron at 560 g/ha caused 26, 28 and 9% visible injury, respectively. At 14 DAA, the minimum rate of halosulfuron required for 90% control of the following weeds is in brackets: velvetleaf, (8.75 g/ha), green pigweed (35 g/ha), common ragweed (4.375 g/ha), lamb’s-quarters (> 560 g/ha), Eastern black nightshade (> 560 g/ha), barnyard grass (> 560 g/ha) and green foxtail (> 560 g/ha). At 28 DAA, the minimum rate of halosulfuron required for 90% control of the following weeds is in brackets: velvetleaf, (8.75 g/ha), green pigweed (35 g/ha), common ragweed (4.375 g/ha), lamb’s-quarters (> 560 g/ha), Eastern black nightshade (> 560 g/ha), barnyard grass (> 560 g/ha) and green foxtail (> 560 g/ha). At 56 DAA, the minimum rate of halosulfuron required for 90% control of the following weeds is in brackets: velvetleaf, (8.75 g/ha), green pigweed (17.5 g/ha), common ragweed (4.375 g/ha), lamb’s-quarters (> 560 g/ha), Eastern black nightshade (> 560 g/ha), barnyard grass (> 560 g/ha) and green foxtail (> 560 g/ha). Halosulfuron at 140-560 g/ha resulted in corn yield equivalent to the weed-free control.

12

BENEFIT OF ADDING AMS TO GLYPHOSATE (14, 15)




Expt. Design: RACOBL. Reps: 4. Plot Size: 2 m x 10 m. Expt. Location: RC - Range C9.

Site Description: Soil Texture: SCL. %OM: 4.2 %Sand: 46.0 %Silt: 27.0 %Clay: 27.0 pH: 7.3 CEC: 14.2.




Time of Day: 09:45 Height : 60 CM

Timing : POST

Air Temp. : 22.7 C Weed 1 ABUTH 1-3LF

% Humidity : 88.5 Height: 1-13CM

Wind Speed : 1.1 KM/H Density : 12 /M2

Dew Present: Y Weed 2 AMAPO 2-14LF

Soil Temp.: 20.4 C Height: 3-12CM

Soil Moist.: MOIST Density : 15.5 /M2

Cloud Cover: 100% Weed 3 AMBEL 2-12LF

Equipment : Height: 1-17CM

Pressure : 207 Density : 102 /M2

Nozzle Type: LOW DRIFT Weed 4 CHEAL C-20+L

Nozzle Size: ULD120-02 Height: 1-14CM

Noz.Spacing: 50 CM Density : 19.5 /M2

Boom Length: 2 M Weed 5 SETVI 2-4LF

Boom Height: 50 CM Height: 3-27CM



Propellant : CO2

Pest Code ABUTH AMAPO AMBEL CHEAL SETVI ABUTH AMAPO AMBEL CHEAL Crop Code ZEAMX ZEAMX Rating Date Jun-25-15 Jun-25-15 Jun-25-15 Jun-25-15 Jun-25-15 Jul-1-15 Jul-1-15 Jul-1-15 Jul-1-15 Rating Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % % Crop Stage Majority V7 V8 Crop Stage Scale 80-100CM 1-1.2M Pest Stage Majority C-4LF 4-20+LF 2-20+LF 2-20+LF 3L-3TIL 3LF 6-20+LF 4-20+LF 4-20+LF Pest Density, Unit 8.5 /M2 20 /M2 92 /M2 20 /M2 32 /M2 5.5 /M2 12 /M2 96 /M2 28 /M2 Trt-Eval Interval 7 DA-A 7 DA-A 7 DA-A 7 DA-A 7 DA-A 13 DA-A 13 DA-A 13 DA-A 13 DA-A


1 Weedy check 0 g 0 c 0 g 0 e 0 e 0 f 0 b 0 e 0 d 2 Weed free check 100 a 100 a 100 a 100 a 100 a 100 a 100 a 100 a 100 a 3 glyphosate (Weathermax) 540 SL 450 g AI/ha POST A 53 f 99 b 97 f 98 d 97 d 85 e 100 a 97 d 99 c 4 glyphosate (Weathermax) 540 SL 450 g AI/ha POST A 79 e 100 a 98 e 98 cd 97 cd 97 bcd 100 a 99 bc 99 c

AMS 1000 SL 2.50 L/ha POST A 5 glyphosate (Weathermax) 540 SL 956.25 g AI/ha POST A 83 de 100 a 99 de 99 bcd 97 cd 97 cd 100 a 99 bc 99 bc 6 glyphosate (Weathermax) 540 SL 675 g AI/ha POST A 78 e 100 a 99 cde 99 bc 98 c 96 d 100 a 99 c 99 c 7 glyphosate (Weathermax) 540 SL 675 g AI/ha POST A 88 cd 100 a 99 bcd 98 cd 98 b 98 abc 100 a 99 c 99 c

AMS 1000 SL 2.50 L/ha POST A 8 glyphosate (Weathermax) 540 SL 1181.25 g AI/ha POST A 95 ab 100 a 99 bcd 99 ab 99 b 99 ab 100 a 99 bc 99 bc 9 glyphosate (Weathermax) 540 SL 900 g AI/ha POST A 92 bc 100 a 99 bc 99 ab 99 b 99 abc 100 a 99 bc 100 ab

10 glyphosate (Weathermax) 540 SL 900 g AI/ha POST A 96 ab 100 a 99 bc 99 bc 99 b 99 ab 100 a 99 b 100 ab

AMS 1000 SL 2.50 L/ha POST A 11 glyphosate (Weathermax) 540 SL 1406.25 g AI/ha POST A 97 ab 100 a 100 ab 99 ab 99 b 99 ab 100 a 99 bc 100 ab

LSD (P=.05) 6.8 0.4 0.6 0.9 0.7 1.9 0.3 0.6 0.7 Standard Deviation 4.7 0.3 0.4 0.6 0.5 1.3 0.2 0.4 0.5 CV 6.02 0.32 0.47 0.68 0.57 1.48 0.22 0.43 0.52

13

BENEFIT OF ADDING AMS TO GLYPHOSATE (14, 15)

.


Pest Code

SETVI ABUTH AMAPO AMBEL CHEAL SETVI ABUTH AMAPO AMBEL

Crop Code ZEAMX ZEAMX Rating Date Jul-1-15 Jul-10-15 Jul-10-15 Jul-10-15 Jul-10-15 Jul-10-15 Jul-16-15 Jul-16-15 Jul-16-15 Rating Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % % Crop Stage Majority V11 V14 Crop Stage Scale 1.4-1.7M 1.5-2.1M Pest Stage Majority 3L-3TIL 3L-BUD 6L-BUD 4-20+LF 6-20+LF 4L-4TIL 3L-BUD 4L-BUD 4L-BUD Pest Density, Unit 30 /M2 3.5 /M2 7.5 /M2 90 /M2 22 /M2 26 /M2 4 /M2 14 /M2 65 /M2 Footnote Number 1 Trt-Eval Interval 13 DA-A 22 DA-A 22 DA-A 22 DA-A 22 DA-A 22 DA-A 28 DA-A 28 DA-A 28 DA-A


1 Weedy check 0 e 0 e 0 c 0 e 0 d 0 d 0 d 0 d 0 e 2 Weed free check 100 a 100 a 100 a 100 a 100 a 100 a 100 a 100 a 100 a 3 glyphosate (Weathermax) 540 SL 450 g AI/ha POST A 98 d 96 d 100 ab 98 d 99 b 99 b 96 c 99 c 98 d 4 glyphosate (Weathermax) 540 SL 450 g AI/ha POST A 99 cd 98 c 100 b 99 bc 99 c 99 c 99 b 99 c 99 c

AMS 1000 SL 2.50 L/ha POST A 5 glyphosate (Weathermax) 540 SL 956.25 g AI/ha POST A 99 bcd 99 b 100 a 99 b 99 b 99 b 99 b 99 c 99 bc 6 glyphosate (Weathermax) 540 SL 675 g AI/ha POST A 99 cd 99 b 100 ab 99 b 99 b 99 b 99 b 99 b 99 b 7 glyphosate (Weathermax) 540 SL 675 g AI/ha POST A 99 bcd 99 b 100 a 99 cd 99 b 99 b 99 b 99 c 99 bc

AMS 1000 SL 2.50 L/ha POST A 8 glyphosate (Weathermax) 540 SL 1181.25 g AI/ha POST A 99 bcd 99 b 100 a 99 b 99 b 99 b 99 b 99 c 99 bc 9 glyphosate (Weathermax) 540 SL 900 g AI/ha POST A 99 abc 99 b 100 ab 99 b 99 b 99 b 99 b 99 c 99 bc

10 glyphosate (Weathermax) 540 SL 900 g AI/ha POST A 99 abc 99 b 100 a 99 b 99 b 99 b 99 b 99 c 99 bc

AMS 1000 SL 2.50 L/ha POST A 11 glyphosate (Weathermax) 540 SL 1406.25 g AI/ha POST A 100 ab 99 b 100 a 99 b 99 b 99 b 99 b 99 c 99 bc


Footnote Number 1: ANY DECREASE IN WEED CONTROL ATTRIBUTABLE TO NEW FLUSH OF WEEDS EMERGING. Pest Code CHEAL SETVI ABUTH AMAPO AMBEL CHEAL SETVI Crop Code ZEAMX ZEAMX ZEAMX Rating Date Jul-16-15 Jul-16-15 Aug-13-15 Aug-13-15 Aug-13-15 Aug-13-15 Aug-13-15 Nov-5-15 Nov-5-15 Rating Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL YIELD YIELD Rating Unit % % % % % % % T/HA BU/AC Crop Stage Majority R3 Crop Stage Scale 2.4-2.9M Pest Stage Majority 4-20+LF 4L-3TIL 4L-FLWR 8L-FLWR 20+L-FLW 8L-FLWR 3L-FLWR Pest Density, Unit 34 /M2 26 /M2 3.5 /M2 5 /M2 72 /M2 5 /M2 21 /M2 Trt-Eval Interval 28 DA-A 28 DA-A 56 DA-A 56 DA-A 56 DA-A 56 DA-A 56 DA-A 140 DA-A 140 DA-A


1 Weedy check 0 e 0 d 0 d 0 d 0 e 0 e 0 c 8.35 b 133.0 b 2 Weed free check 100 a 100 a 100 a 100 a 100 a 100 a 100 a 13.50 a 215.1 a 3 glyphosate (Weathermax) 540 SL 450 g AI/ha POST A 98 d 99 c 96 c 99 c 97 d 98 d 99 b 12.42 a 197.9 a 4 glyphosate (Weathermax) 540 SL 450 g AI/ha POST A 99 c 99 c 99 b 99 b 98 c 99 c 99 b 12.15 a 193.5 a

AMS 1000 SL 2.50 L/ha POST A 5 glyphosate (Weathermax) 540 SL 956.25 g AI/ha POST A 99 b 99 c 99 b 99 b 99 b 99 b 99 b 12.16 a 193.8 a 6 glyphosate (Weathermax) 540 SL 675 g AI/ha POST A 99 b 99 b 99 b 99 b 99 b 99 b 99 b 11.69 a 186.3 a 7 glyphosate (Weathermax) 540 SL 675 g AI/ha POST A 99 b 99 c 99 b 99 b 99 b 99 b 99 b 12.11 a 192.9 a

AMS 1000 SL 2.50 L/ha POST A 8 glyphosate (Weathermax) 540 SL 1181.25 g AI/ha POST A 99 b 99 c 99 b 99 b 99 b 99 b 99 b 12.49 a 198.9 a 9 glyphosate (Weathermax) 540 SL 900 g AI/ha POST A 99 b 99 c 99 b 99 b 99 b 99 b 99 b 13.19 a 210.2 a

10 glyphosate (Weathermax) 540 SL 900 g AI/ha POST A 99 b 99 c 99 b 99 b 99 b 99 bc 99 b 12.53 a 199.7 a

AMS 1000 SL 2.50 L/ha POST A 11 glyphosate (Weathermax) 540 SL 1406.25 g AI/ha POST A 99 b 99 c 99 b 99 b 99 b 99 b 99 b 12.57 a 200.3 a


Note: [Roundup Weathermax = $8.00/L, 1.67 L/ha = 900 g/ha. AMS = $3.00/L, 2.5 L/ha, $7.50/ha or glyphosate at 506.25 g/ha.]

Conclusions: This experiment was established to determine if there is greater benefit of adding ammonium sulfate (AMS) or an equal value of glyphosate to glyphosate applied at 450, 675 or 900 g/ha. At 7 DAA, with glyphosate applied at 450 g/ha, there was no benefit (

14

BENEFIT OF ADDING AMS TO GLYPHOSATE (14, 15) II



Expt. Design: RACOBL. Reps: 4. Plot Size: 2 m x 10 m. Expt. Location: RC - Range D9.

Site Description: Soil Texture: SCL. %OM: 3.4 %Sand: 58.8 %Silt: 19.6 %Clay: 21.6 pH: 6.7 CEC: 11.3.




Time of Day: 8:40 am Height : 35 CM

Timing : POST

Air Temp. : 15.9 C Weed 1 ABUTH 4 LF

% Humidity : 51 Height: 4 LF

Wind Speed : 4.3 kph Density : 9 M2

Dew Present: Y Weed 2 AMBEL 6LF

Soil Temp.: 19 C Height: 8LF

Soil Moist.: super wet Density : 16 M2

Cloud Cover: 5% Weed 3 CHEAL 6lf

Equipment : Height: 6lf

Pressure : 207 Density : 14 M2

Nozzle Type: LOW DRIFT Weed 4 SOLPT 3 LF

Nozzle Size: ULD120-02 Height: 3 LF

Noz.Spacing: 50 CM Density : 6 M2

Boom Length: 2 M Weed 5 ECHCG 2TIL

Boom Height: 50 CM Height: 2TIL

Carrier : WATER Density : 137 M2


Propellant : CO2

Pest Code ABUTH AMBEL CHEAL SOLPT ECHCG ABUTH AMBEL CHEAL Crop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX Rating Date Jun-10-15 Jun-10-15 Jun-10-15 Jun-10-15 Jun-10-15 Jun-16-15 Jun-16-15 Jun-16-15 Rating Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % Crop Stage Majority V5 V5 V5 V5 V5 V6 V6 V6 Crop Stage Scale 30-60CM 30-60CM 30-60CM 30-60CM 30-60CM 84-97CM 84-97CM 84-97CM Pest Stage Majority cot-3lf 2-10lf cot-20+l cot-8lf 3lf-4til 2-6lf 4-20+lf 4-20+lf Pest Density, Unit 5 M2 18 M2 21 M2 12 M2 35 M2 5 M2 25 M2 21 M2 Trt-Eval Interval 8 DA-A 8 DA-A 8 DA-A 8 DA-A 8 DA-A 14 DA-A 14 DA-A 14 DA-A

Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5 6 7 8

1 Weedy check 0 c 0 d 0 b 0 c 0 d 0 d 0 e 0 d 2 Weed free check 100 a 100 a 100 a 100 a 100 a 100 a 100 a 100 a 3 glyphosate (Weathermax) 540 SL 450 g ai/ha POST A 97 b 95 c 100 a 100 ab 98 bc 100 ab 97 d 98 c 4 glyphosate (Weathermax) 540 SL 450 g ai/ha POST A 98 ab 97 b 100 a 100 b 98 bc 98 c 98 bcd 99 bc

AMS 1000 SL 2.50 l/ha POST A 5 glyphosate (Weathermax) 540 SL 956.25 g ai/ha POST A 100 a 99 ab 100 a 100 a 99 abc 100 ab 98 bcd 99 bc 6 glyphosate (Weathermax) 540 SL 675 g ai/ha POST A 99 ab 100 a 100 a 100 a 97 c 99 bc 98 cd 98 bc 7 glyphosate (Weathermax) 540 SL 675 g ai/ha POST A 99 ab 99 a 100 a 100 a 98 bc 99 abc 98 bc 99 bc

AMS 1000 SL 2.50 l/ha POST A 8 glyphosate (Weathermax) 540 SL 1181.25 g ai/ha POST A 100 a 100 a 100 a 100 a 99 abc 100 a 99 bc 99 b 9 glyphosate (Weathermax) 540 SL 900 g ai/ha POST A 99 ab 99 a 100 a 100 a 99 abc 100 a 98 cd 99 bc

10 glyphosate (Weathermax) 540 SL 900 g ai/ha POST A 100 a 99 a 100 a 100 a 99 ab 100 a 98 cd 99 bc

AMS 1000 SL 2.50 l/ha POST A 11 glyphosate (Weathermax) 540 SL 1406.25 g ai/ha POST A 100 a 99 a 100 a 100 a 99 abc 100 ab 99 ab 99 b

LSD (P=.05) 2.6 2.0 0.0 0.5 1.7 1.1 1.2 0.9 Standard Deviation 1.8 1.4 0.0 0.3 1.2 0.8 0.8 0.6 CV 1.98 1.51 0.0 0.36 1.33 0.85 0.9 0.68

15



Pest Code SOLPT ECHCG ABUTH AMBEL CHEAL SOLPT ECHCG ABUTH Crop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX Rating Date Jun-16-15 Jun-16-15 Jun-23-15 Jun-23-15 Jun-23-15 Jun-23-15 Jun-23-15 Jun-30-15 Rating Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % Crop Stage Majority V6 V6 V7 V7 V7 V7 V7 V9-V10 Crop Stage Scale 84-97CM 84-97CM 110-120c 110-120c 110-120c 110-120c 110-120c 142-167C Pest Stage Majority 3-10lf 3lf-4til 2-6lf 6-20+LF 8-20+LF 6-20+LF 3-4TIL 4LF-BUD Pest Density, Unit 3 M2 28 M2 10 M2 15 M2 9 M2 4 M2 27 M2 8.5 /M2 Trt-Eval Interval 14 DA-A 14 DA-A 21 DA-A 21 DA-A 21 DA-A 21 DA-A 21 DA-A 28 DA-A


1 Weedy check 0 b 0 d 0 c 0 f 0 d 0 d 0 d 0 c 2 Weed free check 100 a 100 a 100 a 100 a 97 a 100 a 100 a 100 a 3 glyphosate (Weathermax) 540 SL 450 g ai/ha POST A 100 a 97 c 99 b 90 de 91 c 98 bc 91 c 98 ab 4 glyphosate (Weathermax) 540 SL 450 g ai/ha POST A 100 a 97 c 98 b 89 e 92 abc 99 b 92 bc 95 ab

AMS 1000 SL 2.50 l/ha POST A 5 glyphosate (Weathermax) 540 SL 956.25 g ai/ha POST A 100 a 99 b 99 b 92 cde 92 bc 99 b 94 bc 100 a 6 glyphosate (Weathermax) 540 SL 675 g ai/ha POST A 100 a 98 bc 99 b 94 b-e 94 abc 98 bc 95 b 95 ab 7 glyphosate (Weathermax) 540 SL 675 g ai/ha POST A 100 a 98 bc 98 b 94 bcd 96 abc 98 bc 93 bc 95 ab

AMS 1000 SL 2.50 l/ha POST A 8 glyphosate (Weathermax) 540 SL 1181.25 g ai/ha POST A 100 a 98 bc 99 b 93 b-e 97 a 99 b 93 bc 100 a 9 glyphosate (Weathermax) 540 SL 900 g ai/ha POST A 100 a 98 bc 99 b 97 ab 94 abc 99 b 95 b 100 a

10 glyphosate (Weathermax) 540 SL 900 g ai/ha POST A 100 a 99 b 99 b 94 bcd 94 abc 98 c 96 b 94 b

AMS 1000 SL 2.50 l/ha POST A 11 glyphosate (Weathermax) 540 SL 1406.25 g ai/ha POST A 100 a 99 ab 99 b 96 bc 96 ab 99 ab 95 b 98 ab


Pest Code AMBEL CHEAL SOLPT ECHCG ABUTH AMBEL CHEAL SOLPT Crop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX Rating Date Jun-30-15 Jun-30-15 Jun-30-15 Jun-30-15 Jul-28-15 Jul-28-15 Jul-28-15 Jul-28-15 Rating Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % Crop Stage Majority V9-V10 V9-V10 V9-V10 V9-V10 R1 R1 R1 R1 Crop Stage Scale 142-167C 142-167C 142-167C 142-167C 240-265C 240-265C 240-265C 240-265C Pest Stage Majority 6-20+LF 6-20+LF 6LF-FLWR 4T-FLWR FLWR 20+-BUD 6-20+LF 5LF-FLWR Pest Density, Unit 14 /M2 21 /M2 9 /M2 29.5/M2 2 /M2 15.5/M2 11 /M2 4 /M2 Trt-Eval Interval 28 DA-A 28 DA-A 28 DA-A 28 DA-A 56 DA-A 56 DA-A 56 DA-A 56 DA-A


1 Weedy check 0 f 0 g 0 f 0 g 0 c 0 f 0 f 0 e 2 Weed free check 100 a 100 a 100 a 100 a 100 a 100 a 100 a 100 a 3 glyphosate (Weathermax) 540 SL 450 g ai/ha POST A 50 e 54 ef 51 e 51 ef 98 ab 44 e 49 de 48 cd 4 glyphosate (Weathermax) 540 SL 450 g ai/ha POST A 50 e 50 f 49 e 48 f 96 ab 41 e 43 e 43 d

AMS 1000 SL 2.50 l/ha POST A 5 glyphosate (Weathermax) 540 SL 956.25 g ai/ha POST A 56 de 60 cde 58 d 61 cd 100 a 50 de 50 de 50 cd 6 glyphosate (Weathermax) 540 SL 675 g ai/ha POST A 56 de 58 de 58 d 55 de 98 ab 43 e 43 e 46 cd 7 glyphosate (Weathermax) 540 SL 675 g ai/ha POST A 63 cd 63 cd 61 cd 63 bc 95 ab 55 cd 58 cd 51 cd

AMS 1000 SL 2.50 l/ha POST A 8 glyphosate (Weathermax) 540 SL 1181.25 g ai/ha POST A 70 b 70 b 70 b 68 bc 100 a 63 bc 64 bc 63 b 9 glyphosate (Weathermax) 540 SL 900 g ai/ha POST A 61 cd 63 cd 64 c 65 bc 100 a 55 cd 56 cd 50 cd

10 glyphosate (Weathermax) 540 SL 900 g ai/ha POST A 64 bc 65 bc 65 bc 68 bc 94 b 63 bc 64 bc 55 bc

AMS 1000 SL 2.50 l/ha POST A 11 glyphosate (Weathermax) 540 SL 1406.25 g ai/ha POST A 70 b 70 b 70 b 69 b 98 ab 66 b 68 b 65 b


16



Pest Code ECHCG Crop Code ZEAMX ZEAMX ZEAMX Rating Date Jul-28-15 Nov-4-15 Nov-4-15 Rating Type CONTROL YIELD YIELD Rating Unit % T/HA BU/AC Crop Stage Majority R1 Crop Stage Scale 240-265C Pest Stage Majority 2TIL-FLW Pest Density, Unit 11.5/M2 Trt-Eval Interval 56 DA-A 155 DA-A 155 DA-A

Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 25 28 29

1 Weedy check 0 f 11.40 b 181.6 b 2 Weed free check 100 a 15.89 a 253.2 a 3 glyphosate (Weathermax) 540 SL 450 g ai/ha POST A 49 de 14.70 a 234.2 a 4 glyphosate (Weathermax) 540 SL 450 g ai/ha POST A 40 e 15.24 a 242.8 a

AMS 1000 SL 2.50 l/ha POST A 5 glyphosate (Weathermax) 540 SL 956.25 g ai/ha POST A 53 d 15.62 a 248.9 a 6 glyphosate (Weathermax) 540 SL 675 g ai/ha POST A 48 de 15.32 a 244.1 a 7 glyphosate (Weathermax) 540 SL 675 g ai/ha POST A 54 cd 15.98 a 254.5 a

AMS 1000 SL 2.50 l/ha POST A 8 glyphosate (Weathermax) 540 SL 1181.25 g ai/ha POST A 65 b 16.31 a 259.9 a 9 glyphosate (Weathermax) 540 SL 900 g ai/ha POST A 63 bc 16.09 a 256.3 a

10 glyphosate (Weathermax) 540 SL 900 g ai/ha POST A 64 b 15.51 a 247.1 a

AMS 1000 SL 2.50 l/ha POST A 11 glyphosate (Weathermax) 540 SL 1406.25 g ai/ha POST A 66 b 14.87 a 237.0 a

LSD (P=.05) 9.1 2.039 32.48 Standard Deviation 6.3 1.412 22.50 CV 11.6 9.3 9.3

Note: [Roundup Weathermax = $8.00/L, 1.67 L/ha = 900 g/ha. AMS = $3.00/L, 2.5 L/ha, $7.50/ha or glyphosate at 506.25 g/ha.] Conclusions: This experiment was established to determine if there is greater benefit of adding ammonium sulfate (AMS) or an equal value of glyphosate to glyphosate applied at 450, 675 or 900 g/ha. At 7, 13 and 21DAA, with glyphosate applied at 450, 675 0r 900 g/ha, there was no benefit (

17

TOLERANCE OF CORN TO GLYPHOSATE + 2,4-D APPLIED POST I (DEKALB 52-61 & PIONEER P0094AM - 2 ROWS FOR EACH HYBRID).


CROP: ZEAMX, Corn (RR & LL) (DK 52-61RIB). Planted: May-1-15, 78800 SEEDS/HA, 5 CM Deep, 75 CM Row Width. Planting Method: CONV.


ZEAMX, Corn (RR & LL) (PIONEER P0094AM). Planted: May-1-15, 78800 SEEDS/HA, 5 CM Deep, 75 CM Row Width. Planting Method: CONV.


Expt. Design: FACTOR. Reps: 4. Plot Size: 3 m x 10 m. Expt. Location: RC - Range N7.



Application: A B C Application: A B C

Date : May-14-15 May-28-15 Jun-2-15 Crop 1 ZEAMX V1 V3-V4 V5

Time of Day: 08:40 13:50 16:30 Height : 8 CM 32 CM 48 CM

Timing : V1 V3 V5 Crop 2 ZEAMX V1 V3-V4 V5

Air Temp. : 14.0 C 23.4 C 17.3 C Height : 8 CM 25 CM 40 CM

% Humidity : 51.9 61.2 74

Wind Speed : 0.8 KM/H 4.2 KM/H 3.8 KM/H

Dew Present: Y N N

Soil Temp.: 9.6 C 26.9 C 23.7 C

Soil Moist.: AT DEPTH MOIST MOIST

Cloud Cover: 20% 5% 0%

Equipment :

Pressure : 207 207 207

Nozzle Type: LOW DRIFT LOW DRIFT LOW DRIFT

Nozzle Size: ULD120-02 ULD120-02 ULD120-02

Noz.Spacing: 50 CM 50 CM 50 CM

Boom Length: 1.5 M 1.5 M 1.5 M

Boom Height: 50 CM 50 CM 50 CM

Carrier : WATER WATER WATER

Appl.Volume: 200 L/ha 200 L/ha 200 L/ha

Propellant : CO2 CO2 CO2

Crop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX

Description DK 52-61 P0094AM DK 52-61 P0094AM DK 52-61 P0094AM DK 52-61 P0094AM DK 52-61

Part Rated 10 PLA -

Rating Date Jun-29-15 Jun-29-15 Jul-28-15 Jul-28-15 Jun-16-15

Rating Type INJURY INJURY INJURY INJURY INJURY INJURY INJURY INJURY AV. HT

Rating Unit % % % % % % % % CM

Crop Stage Majority V12-V13 V12-V13 R1-R2 R1-R2

Crop Stage Scale 1.7-2.1M 1.7-2.1M 2.8-3.1M 2.8-3.1M

Footnote Number 1 2 3 4

Trt-Eval Interval 7DA_ 7DA_ 14DA_ 14DA_ 27 DA-C 27 DA-C 56 DA-C 56 DA-C 14 DA-C


TABLE OF R MEANS Replicate 1 11 7 8 5 6 5 5 5 120

Replicate 2 15 11 9 7 6 5 6 4 121

Replicate 3 13 9 8 5 9 5 9 4 123

Replicate 4 14 10 8 5 9 6 8 5 121

TABLE OF A (Timing) MEANS 1 POST 1 = V1 stage - 1 collar, 3 leaves A 4 a 2 a 2 a 1 a 0 a 0 a 0 a 0 a 122 a

2 POST 2 = V3 stage - 3 collar, 5 leaves B 23 c 15 c 12 b 8 b 9 b 6 b 8 b 5 b 118 b

3 POST 3 = V5 stage - 5 collar, 7 leaves C 13 b 11 b 11 b 8 b 14 c 10 c 13 c 9 c 123 a

LSD= 2 2 2 2 2 1 3 2 3

TABLE OF B (Glyphosate Rate) MEANS 1 Control 6 a 3 a 4 a 2 a 4 a 2 a 4 a 2 a 123 a

2 glyphosate (Weathermax) 540 SL 1800 g AI/ha 21 b 15 b 12 b 9 b 11 b 8 b 10 b 6 b 120 b

LSD= 2 2 1 1 2 1 2 2 2

TABLE OF C (2,4-D Amine Rate) MEANS 1 Control 0 a 0 a 0 a 0 a 0 a 0 a 0 a 0 a 124 a

2 2,4-D amine 564 SL 560 g AI/ha 14 b 9 b 8 b 5 b 7 b 4 b 7 b 4 b 121 b

3 2,4-D amine 564 SL 1120 g AI/ha 27 c 19 c 16 c 11 c 16 c 11 c 14 c 9 c 119 b

LSD= 2 2 2 2 2 1 3 2 3

TABLE OF A (Timing) B (Glyphosate Rate) MEANS 1 POST 1 = V1 stage - 1 collar, 3 leaves A 2a 1 a 1 a 0 a 0 a 0 a 0 a 0 a 123

1 Control 2 POST 2 = V3 stage - 3 collar, 5 leaves B 11 c 6 b 6 b 2 b 5 b 3 b 5 b 2 b 121

1 Control 3 POST 3 = V5 stage - 5 collar, 7 leaves C 5 b 4 b 5 b 3 b 8 c 4 b 8 b 5 c 124

1 Control 1 POST 1 = V1 stage - 1 collar, 3 leaves A 7 a 4 a 3 a 1 a 0 a 0 a 0 a 0 a 122

2 glyphosate (Weathermax) 540 SL 1800 g AI/ha 2 POST 2 = V3 stage - 3 collar, 5 leaves B 35 c 24 c 19 c 13 b 12 b 8 b 11 b 7 b 116

2 glyphosate (Weathermax) 540 SL 1800 g AI/ha 3 POST 3 = V5 stage - 5 collar, 7 leaves C 21 b 19 b 16 b 12 b 20 c 15 c 18 c 12 c 121

2 glyphosate (Weathermax) 540 SL 1800 g AI/ha LSD= 3 3 2 2 3 2 4 3 NS

18


CHRISTY SHROPSHIRE, PETER SIKKEMA EXPERIMENT ID: FC15C6A6A



Part Rated 10 PLA -









TABLE OF A (Timing) C (2,4-D Amine Rate) MEANS 1 POST 1 = V1 stage - 1 collar, 3 leaves A 0 a 0 a 0 a 0 a 0 a 0 a 0 a 0 a 125

1 Control 2 POST 2 = V3 stage - 3 collar, 5 leaves B 0 a 0 a 0 a 0 a 0 a 0 a 0 a 0 a 122

1 Control 3 POST 3 = V5 stage - 5 collar, 7 leaves C 0 a 0 a 0 a 0 a 0 a 0 a 0 a 0 a 123

1 Control 1 POST 1 = V1 stage - 1 collar, 3 leaves A 4 a 2 a 1 a 0 a 0 a 0 a 0 a 0 a 121

2 2,4-D amine 564 SL 560 g AI/ha 2 POST 2 = V3 stage - 3 collar, 5 leaves B 28 c 18 c 15 c 9 c 9 b 6 b 9 b 5 b 117

2 2,4-D amine 564 SL 560 g AI/ha 3 POST 3 = V5 stage - 5 collar, 7 leaves C 10 b 8 b 9 b 6 b 12 b 7 b 13 b 7 b 125

2 2,4-D amine 564 SL 560 g AI/ha 1 POST 1 = V1 stage - 1 collar, 3 leaves A 9 a 4 a 4 a 2 a 0 a 0 a 0 a 0 a 121

3 2,4-D amine 564 SL 1120 g AI/ha 2 POST 2 = V3 stage - 3 collar, 5 leaves B 41 c 26 b 22 b 14 b 17 b 11 b 16 b 9 b 115

3 2,4-D amine 564 SL 1120 g AI/ha 3 POST 3 = V5 stage - 5 collar, 7 leaves C 30 b 26 b 23 b 17 c 30 c 22 c 27 c 18 c 119

3 2,4-D amine 564 SL 1120 g AI/ha LSD= 4 3 3 3 4 2 5 4 NS

TABLE OF B (Glyphosate Rate) C (2,4-D Amine Rate) MEANS 1 Control 0 a 0 a 0 a 0 a 0 a 0 a 0 a 0 a 123 a

1 Control 2 glyphosate (Weathermax) 540 SL 1800 g AI/ha 0 a 0 a 0 a 0 a 0 a 0 a 0 a 0 a 124 a

1 Control 1 Control 6 a 4 a 5 a 2 a 4 a 2 a 4 a 2 a 124 a

2 2,4-D amine 564 SL 560 g AI/ha 2 glyphosate (Weathermax) 540 SL 1800 g AI/ha 22 b 15 b 12 b 8 b 9 b 6 b 10 b 6 b 118 b

2 2,4-D amine 564 SL 560 g AI/ha 1 Control 12 a 7 a 8 a 3 a 8 a 5 a 9 a 5 a 120 a

3 2,4-D amine 564 SL 1120 g AI/ha 2 glyphosate (Weathermax) 540 SL 1800 g AI/ha 41 b 31 b 25 b 19 b 23 b 17 b 20 b 14 b 117 a

3 2,4-D amine 564 SL 1120 g AI/ha LSD= 3 3 2 2 3 2 4 3 4

TABLE OF A (Timing) B (Glyphosate Rate) C (2,4-D Amine Rate) MEANS 1 POST 1 = V1 stage - 1 collar, 3 leaves A 0 a 0 a 0 a 0 a 0 a 0 a 0 a 0 a 125

1 Control 1 Control 2 POST 2 = V3 stage - 3 collar, 5 leaves B 0 a 0 a 0 a 0 a 0 a 0 a 0 a 0 a 122

1 Control 1 Control 3 POST 3 = V5 stage - 5 collar, 7 leaves C 0 a 0 a 0 a 0 a 0 a 0 a 0 a 0 a 122

1 Control 1 Control 1 POST 1 = V1 stage - 1 collar, 3 leaves A 0 a 0 a 0 a 0 a 0 a 0 a 0 a 0 a 125

2 glyphosate (Weathermax) 540 SL 1800 g AI/ha 1 Control 2 POST 2 = V3 stage - 3 collar, 5 leaves B 0 a 0 a 0 a 0 a 0 a 0 a 0 a 0 a 123

2 glyphosate (Weathermax) 540 SL 1800 g AI/ha 1 Control 3 POST 3 = V5 stage - 5 collar, 7 leaves C 0 a 0 a 0 a 0 a 0 a 0 a 0 a 0 a 124

2 glyphosate (Weathermax) 540 SL 1800 g AI/ha 1 Control 1 POST 1 = V1 stage - 1 collar, 3 leaves A 2 a 0 a 1 a 0 a 0 a 0 a 0 a 0 a 123

1 Control 2 2,4-D amine 564 SL 560 g AI/ha 2 POST 2 = V3 stage - 3 collar, 5 leaves B 14 b 8 b 8 b 3 a 4 a 3 b 5 ab 2 ab 121

1 Control 2 2,4-D amine 564 SL 560 g AI/ha 3 POST 3 = V5 stage - 5 collar, 7 leaves C 4 a 2 a 6 b 3 a 9 b 5 b 9 b 5 b 129

1 Control

19





Part Rated 10 PLA -









2 2,4-D amine 564 SL 560 g AI/ha 1 POST 1 = V1 stage - 1 collar, 3 leaves A 7 a 3 a 2 a 1 a 0 a 0 a 0 a 0 a 119

2 glyphosate (Weathermax) 540 SL 1800 g AI/ha 2 2,4-D amine 564 SL 560 g AI/ha 2 POST 2 = V3 stage - 3 collar, 5 leaves B 43 c 27 c 22 c 15 c 13 b 9 b 13 b 8 b 113

2 glyphosate (Weathermax) 540 SL 1800 g AI/ha 2 2,4-D amine 564 SL 560 g AI/ha 3 POST

weed control trials research report 2015 · 2020-07-28 · tolerance and weed control in corn,...

Documents