Vol. 51—1997 - NorthEastern Weed Science Society

165
Applic~tions:
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• /Flat-fan nozzles, 10-25 GPA
• ICOC and UAN as Pursuit and Galaxy/PoastTMPlus adjuvants
• INIS and AMS as Roundup® adjuvants
DeSig1:
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• IRCD
• i 3-5 replications
• IAG3001 at Towanda, IL; Tuscola, IN; Custar, OH; Atlantic, IA; Williams, IA;
!Purdue University; University of Kentucky; Iowa State University; University
Iof'Illinois; and AG3501 at Tuscola, IL; and Ohio State University
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This data ~eaffi.rms the findings ofX. Delannayet al., CropScience 35: 1461-1467. Their
gene efficacy trialf at 17 locations in 1992, 23 locations in 1993, and 18 locations in 1994 showed
no yield reductionfrom any Roundup® rate or timing treatment.
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With the increased trend in no-tillage and the use of narrower row widths, the use of
Roundup Ready~ with these systems is very appealing. Narrow row/no-tillage trials were
conducted at three Asgrow Concept Farms in 1995. The following table shows the yield results
with or without a Iburndown treatment.
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ROUNDUP READyrMINO-TILL SYSTEM
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YIELD SUMMARY
Towanda,lL-15 in.; Williams, lA-7.5 in.; and Atlantic, IA-7.5 in. -1995
38.1 Roundup 32flovA 3 WAP 47.5
41.8 Roundup 24 fl ovA 4 WAP 48.0
40.7 Roundup 32 fl ovA 4 WAP 47.8
45.3 Roundup 32 fl ovA 5 WAP 46.4
*Roundupplus 2,4-DLVE
Results ~dicated that farmers need to plant into weed-free conditions and that there is rate
and timing flexibility.
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WPWORKIAKW\AG61~1.Dl8
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