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Quackgrass (Agropyron repens) Control in Soybeans (Glycine max) with BAS 9052 OH, KK-80, and Ro-13-8895

Published online by Cambridge University Press:  12 June 2017

Mark A. Waldecker  and
Donald L. Wyse
Mark A. Waldecker
Affiliation:
Dep. of Agron. and Plant Genetics, Univ. of Minnesota, St. Paul, MN 55108
Donald L. Wyse
Affiliation:
Dep. of Agron. and Plant Genetics, Univ. of Minnesota, St. Paul, MN 55108
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Abstract

Postemergence applications of BAS 9052 OH {2-[1-(ethoxyimino) butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexene-1-one} and Ro-13-8895 {acetone-O-[d-2-[p-[(α,α,α-trifluoro-p-tolyl-oxy] phenoxy] propionyl]oxime} at 0.3 kg/ha selectively controlled four- to five-leaf-stage quackgrass [Agropyron repens (L.) Beauv. ♯3 AGRRE] 75 and 80%, respectively, 105 days after treatment (DAT). KK-80 {4-[4-[4-(trifluoromethyl)phenoxy) phenoxy]-2-pentenoic} at the same rate and stage of growth controlled quackgrass only 45%. None of the herbicides had preemergence activity on quackgrass. All herbicides applied at 0.8 kg/ha controlled two- to three- or four- to five-leaf-stage quackgrass an average of 88%, whereas applications at the six- to seven-leaf stage controlled quackgrass only 27%, 105 DAT. Cultivation alone 1 DAT provided quackgrass control that gave soybean [Glycine max (L.) Merr.] yields equal to any herbicide or herbicide plus cultivation treatment In a greenhouse experiment, BAS 9052 OH killed 50-bud rhizome systems in 1 day, whereas KK-80 and Ro-13-8895 required 14 and 7 days of translocation, respectively, to provide similar control.

Keywords

Herbicide translocationcultivationrow spacingAGRRE
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 32 , Issue 1 , January 1984 , pp. 67 - 75
Copyright
Copyright © 1984 by the Weed Science Society of America 

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References

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