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Yield Response of Weed-Free Soybeans (Glycine max) to Injury from Postemergence Broadleaf Herbicides

Published online by Cambridge University Press:  12 June 2017

George Kapusta ,
Lucinda A. Jackson  and
Delores Schutte Mason
George Kapusta
Affiliation:
Herb. Res., Dow Chemical U.S.A., 2800 Mitchell Dr., Walnut Creek, CA 94598
Lucinda A. Jackson
Affiliation:
Herb. Res., Dow Chemical U.S.A., 2800 Mitchell Dr., Walnut Creek, CA 94598
Delores Schutte Mason
Affiliation:
Plant and Soil Sci. Dep., Southern Illinois Univ., Carbondale, IL 62901
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Abstract

Experiments were conducted over 4 yr to investigate the effects of four postemergence herbicides on soybean [Glycine max (L.) Merr. ‘Williams 79’] yield under weed-free conditions. Bentazon [3-(1-methylethyl)-(1H)-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide], acifluorfen {5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acid}, and naptalam/dinoseb {2-[(1-naphthalenylamino)carbonyl] benzoic acid}/[2-(1-methylpropyl)-4,6-dinitrophenol] alone and in combination with 2,4-DB [4-(2,4-dichlorophenoxy) butyric acid] applied to soybeans at the V3 and V5 soybean growth stages caused early crop injury, but soybeans outgrew most of the injury by 21 days and there was no effect on yield. Bentazon plus 2,4-DB with or without adjuvant did not affect the yield of five soybean cultivars tested.

Keywords

Bentazonacifluorfennaptalam/dinoseb2,4-DBcultivars
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 34 , Issue 2 , March 1986 , pp. 304 - 307
Copyright
Copyright © 1986 by the Weed Science Society of America 

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References

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