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Volunteer Barley (Hordeum vulgare) Control in Winter Wheat (Triticum aestivum) with MON 37500

Published online by Cambridge University Press:  12 June 2017

Sandra L. Shinn ,
Donald C. Thill  and
William J. Price
Sandra L. Shinn*
Affiliation:
Department of Plant, Soil and Entomological Sciences, University of Idaho, Moscow, ID 83844-2339
Donald C. Thill
Affiliation:
Department of Plant, Soil and Entomological Sciences, University of Idaho, Moscow, ID 83844-2339
William J. Price
Affiliation:
Statistical Programs, University of Idaho, Moscow, ID 83844-2339
*
Corresponding author's E-mail: [email protected].
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Abstract

Spring barley often is grown in rotation with winter wheat, and sometimes barley can overwinter in the subsequent winter wheat crop reducing grain yield and quality. Studies were established during 1996 and 1997 in winter wheat fields in southeastern Washington and near Moscow, ID, respectively, to evaluate control of ‘Steptoe’ volunteer barley with MON 37500, diclofop, and fenoxaprop/2,4-D/MCPA. Herbicides were applied to volunteer barley at two growth stages: two leaves to four tillers and more than four tillers with stems beginning to elongate. MON 37500 at 0.018, 0.026, and 0.035 kg ai/ha visibly controlled volunteer barley 83% or more at both application times. Diclofop at 1.12 kg ai/ha did not control volunteer barley, whereas fenoxaprop/2,4-D/MCPA at 0.66 kg ai/ha controlled volunteer barley 64 to 97% in 1996, but only 0 to 23% in 1997. In 1996 and 1997, volunteer barley density was reduced 80 to 99% in MON 37500-treated plots compared to the untreated control plots. Wheat grain grade was #1 for all MON 37500 treatments compared to grade #4 in 1996 and #3 in 1997 in the untreated plots. Grain price was reduced by dockage (barley kernels) for MON 37500-treated wheat $0 to $3.12/metric ton (MT), whereas price was reduced $23 to $26/MT for grain from untreated plots. In greenhouse studies, visible injury and height and biomass reduction varied among the 36 barley varieties treated with MON 37500.

Keywords

Diclofop-methyl, methyl 2-[4-(2,4-dichlorophenoxy)phenoxy]propanoatefenoxaprop/2,4-D/MCPA, fenoxaprop-p-ethyl, (+)-ethyl 2-[4-[(6-chloro-2-benzoxazoly)oxy]phenoxy]propanoate2,4-D isooctylester, 2-ethylhexyl-(2,4-dichlorophenoxy)acetateMCPA isooctylester, isooctyl(4-chloro-2-methyl-phenoxy)acetateMON 37500, 1-(2-ethylsulfonylimidazo[1,2-a]pyridin-3-ylsulfonyl)-3-(4,6-dimethoxypyrimidin-2-yl)ureavolunteer barley, Hordeum vulgare L. ‘Steptoe'winter wheat, Triticum aestivum L. ‘Madsen.'Grain gradepercent dockageES, early springLS, late springMT, metric tonNIS, nonionic surfactantOM, organic matterPOST, postemergenceSS, silicone surfactant
Type
Research
Information
Weed Technology , Volume 13 , Issue 1 , March 1999 , pp. 88 - 93
Copyright
Copyright © 1999 by the Weed Science Society of America 

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Footnotes

1

Published with approval of the Agriculture Experiment Station, University of Idaho, as Journal Article 98706.

References

Literature Cited

Ahrens, W. H., ed. 1994. Fenoxaprop. Herbicide Handbook. 7th ed. Champaign, Illinois: Weed Science Society of America. pp. 126–128.Google Scholar
Blank, S. E. 1997. Quackgrass control in winter wheat with MON 37500. Proc. West. Soc. Weed Sci. 50:54.Google Scholar
Donald, W. W. and Ogg, A. G. Jr. 1991. Biology and control of jointed goatgrass (Aegilops cylindrica), a review. Weed Technol. 5:3–17.CrossRefGoogle Scholar
Federal Grain Inspection Service. 1995. USDA-FGIS Grain Inspection Handbook. Washington, DC: U.S. Government Printing Office. p. 7.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.CrossRefGoogle Scholar
Gerhardt, G. D. and Kurtz, T. E. 1997. 1997 Idaho Agriculture Statistics. Boise, ID: Idaho Agricultural Statistics Service. 72 p.Google Scholar
Oregon State University Extension Service. 1997. Spring Grain Varieties for 1997. Crop Sciences Rep. 105R. Corvallis, OR: Oregon Slate University Extension Services. 20 p.Google Scholar
Sanders, S. M., Neider, T. C., and Thill, D. C. 1997. Quackgrass and wild oat control in winter wheat with MON 37500 in combination with fenoxaprop/2,4-D/MCPA. West. Soc. Weed Sci. Res. Prog. Rep. p. 103.Google Scholar
[SAS] Statistical Analysis Systems. 1990. SAS User Guide: Statistics. 5th ed. Cary, NC: SAS Institute. 582 p.Google Scholar
Shinn, S. L. and Thill, D. C. 1997a. Volunteer barley control in winter wheat with MON 37500. Proc. West. Soc. Weed Sci. 50:62.Google Scholar
Shinn, S. L. and Thill, D. C. 1997b. Volunteer barley control in winter wheat with MON 37500. West. Soc. Weed Sci. Res. Prog. Rep. p. 106.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.CrossRefGoogle Scholar
[USDA] U.S. Department of Agriculture. 1997. 1996 National Agriculture Statistics Services. Washington, DC: U.S. Government Printing Office. p. 6.Google Scholar