herbicide resistant corn hybrid research in georgia - 2001
DESCRIPTION
Herbicide Resistant Corn Hybrid Research in Georgia - 2001. Eric P. Prostko William K. Vencill R. Dewey Lee Dept. Crop & Soil Sciences University of Georgia. Herbicide Resistant Crops - US (Not Including Stacked Varieties). Source: NASS/USDA. Research in 2001. hybrid performance - PowerPoint PPT PresentationTRANSCRIPT
Herbicide Resistant Herbicide Resistant Corn Hybrid Research Corn Hybrid Research
in Georgia - 2001in Georgia - 2001Eric P. Prostko
William K. Vencill
R. Dewey Lee
Dept. Crop & Soil Sciences
University of Georgia
Herbicide Resistant Crops - USHerbicide Resistant Crops - US(Not Including Stacked Varieties)(Not Including Stacked Varieties)
8
32
48
6
26
54
7
28
63
0
20
40
60
80
Corn Cotton Soybeans
Crop
Acr
es
- %
1999 2000 2001
Source: NASS/USDASource: NASS/USDA
Research in 2001Research in 2001
hybrid performance * Tifton (2 tests)
* Athens
application timing * Grady Co.
* Seminole Co.
Research in 2001Research in 2001
hybrid performance * Tifton
* Athens
application timing * Grady Co.
* Seminole Co.
Herbicide Resistant Corn Hybrid Herbicide Resistant Corn Hybrid Performance - 2001Performance - 2001
198
228
193
229
170
180
190
200
210
220
230
240
Athens Tifton
Bu/
A Treated
Untreated
(LSD 0.05 = NS)(LSD 0.05 = NS)
Roundup Ready Corn Hybrid Roundup Ready Corn Hybrid Performance - 2001Performance - 2001
205
245
202
248
173
217
0
50
100
150
200
250
300
Athens Tifton
Bu/
A P3163
DK662-RR
G8349-RR
(LSD 0.05 = 15)(LSD 0.10 = 22)
Roundup Ready Corn Hybrid Roundup Ready Corn Hybrid Performance - 2001Performance - 2001
219
169185
198178
225207
0
50
100
150
200
250
Hybrid
Bu/
A
Ponder Farm
abc
ef
c-f b-edef
abbcd
Liberty Link Corn Hybrid Liberty Link Corn Hybrid Performance - 2001Performance - 2001
205
245
182 190185
236
205221
0
50
100
150
200
250
300
Athens Tifton
Bu/
A
P3163
P34B29-LL
NK83Z8-LL
NKN79L3-LL
(LSD 0.05 = 15)(LSD 0.10 = 22)
Clearfield Corn Hybrid Clearfield Corn Hybrid Performance - 2001Performance - 2001
205
245
210226
201
245
0
50
100
150
200
250
300
Athens Tifton
Bu/
A P3163
P34B28-CL
G8222-IT
(LSD 0.05 = 15)(LSD 0.10 = 22)
Research in 2001Research in 2001
hybrid performance * Tifton
* Athens
application timing * Grady Co.
* Seminole Co.
Corn Yield Response to Liberty Corn Yield Response to Liberty Application Timings, 2001.Application Timings, 2001.
109
126 122
162 162
139
111120
0
25
50
75
100
125
150
175
Liberty Timing
Bu/
A
Grady County - NK83-Z8Grady County - NK83-Z8Liberty @ 28 ozs/A + AMS @ 3 lb/ALiberty @ 28 ozs/A + AMS @ 3 lb/A
cabc bc
a aabc
cbc
P = 0.10
Corn Yield Response to Roundup Corn Yield Response to Roundup Ultra Application Timings, 2001.Ultra Application Timings, 2001.
145163
183195
212
176
131
159
0
40
80
120
160
200
240
Untre
ated
1 W
AP
2 W
AP
3 W
AP
4 W
AP
5 W
AP
6 W
AP
7 W
AP
Roundup Ultra Timing
Bu/
A
Seminole County - DK622RRSeminole County - DK622RRRoundup Ultra @ 26 ozs/A + AMS @ 3 lb/ARoundup Ultra @ 26 ozs/A + AMS @ 3 lb/A
cdbcd abc
ab a
abc
dbcd
P = 0.10
SummarySummary
Better hybrids are available. * DK 662RR
* NK 83Z8LL
* G8222-IT
Apply Liberty @ 3-4 WAP Apply glyphosate @ 3-4 WAP Tank-mix with atrazine
* Liberty ATZ or ReadyMaster ATZ
University ofGeorgia
ExtensionWeed Science
(gaweed.com)