Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-23T14:34:08.107Z Has data issue: false hasContentIssue false
  • English
  • Français

MON 37500 Efficacy as Affected by Rate, Adjuvants, and Carriers

Published online by Cambridge University Press:  20 January 2017

Brian L.S. Olson ,
Kassim Al-Khatib ,
Phillip W. Stahlman  and
Paul J. Isakson
Brian L.S. Olson
Affiliation:
Department of Soil and Crop Sciences, Texas A&M Agricultural Research and Extension Center–Vernon, Vernon, TX 76385
Kassim Al-Khatib*
Affiliation:
Department of Agronomy, Kansas State University, Manhattan, KS 66502
Phillip W. Stahlman
Affiliation:
Kansas State University Agriculture Research Center–Hays, Hays, KS 67601
Paul J. Isakson
Affiliation:
Monsanto, St. Louis, MO 63198
*
Corresponding author's E-mail: [email protected].
Get access Rights & Permissions [Opens in a new window]

Abstract

Field research was conducted to determine effects of application rate, spray adjuvants, and spray carriers on visible control of downy brome, jointed goatgrass, and cheat and potential injury to wheat by MON 37500. MON 37500 at 24 and 46 g/ha with and without a methylated seed oil or nonionic surfactant and carriers of water, urea ammonium nitrate (UAN), and a 1:1 water/UAN combination were applied to the weeds at the one- to four-leaf stage. Cheat was the most susceptible weed to MON 37500, with control consistently above 87% with all treatments except MON 37500 at 24 g/ha in water 26 weeks after treatment. Downy brome control was more variable, with ratings ranging from 50 to 99% among treatments. For jointed goatgrass, only moderate stunting was observed from all MON 37500 applications. Both wheat varieties showed early season injury after MON 37500 was applied with UAN and either adjuvant; however, no visible injury or yield reduction to either wheat variety was noticed at harvest.

Keywords

MON 37500, 1-(2-ethylsulfonylimidazo[1,2-a]pyridin-3-ylsulfonyl)-3-(4,6-dimethoxypyrimidin-2-yl)ureaUAN, urea ammonium nitrate–28% Njointed goatgrass, Aegilops cylindrica Host. #3 AEGCYcheat, Bromus secalinus L. # BROSEdowny brome, Bromus tectorum L. # BROTEhard-red winter wheat, Triticum aestivum L. Jagger‘2137’WATweeks after treatment
Type
Research Article
Information
Weed Technology , Volume 14 , Issue 4 , December 2000 , pp. 750 - 754
Copyright
Copyright © Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

Anderson, R. L. 1993. Jointed goatgrass (Aegilops cylindrica) ecology and interference in winter wheat. Weed Sci. 41: 388–393.Google Scholar
Blackshaw, R. E. and Hamman, W. M. 1998. Control of downy brome (Bromus tectorum) in winter wheat (Triticum aestivum) with MON 37500. Weed Technol. 12: 421–425.CrossRefGoogle Scholar
Blackshaw, R. E. 1993. Downy brome (Bromus tectorum) density and relative time of emergence affects interference in winter wheat (Triticum aestivum). Weed Sci. 41: 551–556.Google Scholar
Cress, D. C. 1995. Agricultural chemical usage—1995 wheat pesticide summary. MF-2215 Cooperative Extension Service, Kansas State University, Manhattan, KS. 36 p.Google Scholar
Geier, P. W., Stahlman, P. W., Northam, F. E., Miller, S. D., and Hageman, N. R. 1998. MON 37500 rate and timing affects downy brome (Bromus tectorum) control in winter wheat (Triticum aestivum). Weed Sci. 46: 366–373.Google Scholar
Geier, P. W. and Stahlman, P. W. 1996. Dose-responses of weeds and winter wheat (Triticum aestivum) to MON 37500. Weed Technol. 10: 870–875.Google Scholar
Lutcher, L. K. and Mahler, R. L. 1988. Sources and timing of spring topdress nitrogen on winter wheat in Idaho. Agron. J. 80: 648–654.CrossRefGoogle Scholar
Miller, P. A. and Westra, P. 1999. The influence of surfactant and nitrogen on foliar absorption of MON 37500. Weed Sci. 47: 270–274.Google Scholar
Peeper, T. F. and Koscelny, J. A. 1996. Cheat control in Oklahoma wheat with MON 37500. Proc. West. Soc. Weed Sci. 49:83.Google Scholar
Scott, R. C. and Peeper, T. F. 1994. Economic returns from broadleaf weed control in hard read winter wheat (Triticum aestivum). Weed Technol. 8: 797–806.Google Scholar
Shinn, S. L., Thill, D. C., Price, W. J., and Ball, D. A. 1998. Response of downy brome (Bromus tectorum) and rotational crops to MON 37500. Weed Technol. 12: 690–698.Google Scholar
Stahlman, P. W., Currie, R. S., and El-Hamid, M. A. 1997. Nitrogen carrier surfactant increase foliar herbicide injury in winter wheat (Triticum aestivum). Weed Technol. 11: 7–12.Google Scholar
Wicks, G. A. and Hergert, G. W. 1992. Effect of fertilizer plus herbicide solutions on winter wheat. Proc. North Cent. Weed Sci. Soc. 47: 29–33.Google Scholar