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Soybean (Glycine max) Tolerance to Preemergence and Postemergence Herbicides

Published online by Cambridge University Press:  12 June 2017

James L. Griffin  and
Robert J. Habetz
James L. Griffin
Affiliation:
Dep. Plant Pathol. Crop Physiol., 302 Life Sci. Bldg., Baton Rouge, LA 70803
Robert J. Habetz
Affiliation:
Rice Res. Stn., Crowley, LA 70527
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Abstract

Field studies were conducted on a Crowley silt loam under weed-free conditions to determine herbicidal tolerance of ‘Centennial’ soybeans. Early season phytotoxicity and mature plant height reductions were caused by imazaquin at 140 g ai/ha applied preemergence (PRE) followed by imazaquin applied postemergence (POE) at both 140 (labeled rate) and 280 g/ha and for metribuzin plus chlorimuron at 360 plus 60 g ai/ha PRE followed by chlorimuron POE at 18 g/ha (double rate). Soybean yields, averaged across 3 yr, were reduced only for metribuzin plus chlorimuron PRE followed by chlorimuron POE at both 9 and 18 g/ha (10 and 15%, respectively).

Keywords

Chlorimuron, 2-[[[[(4-chloro-6-methoxy-2-pyrimidinyl)amino]carbonyl]amino] sulfonyl]benzoic acidimazaquin, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acidmetribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-onesoybean, Glycine max (L.)Merr.Crowley silt loam, Typic AlbaqualfCrop injuryphytotoxicity
Type
Research
Information
Weed Technology , Volume 3 , Issue 3 , September 1989 , pp. 459 - 462
Copyright
Copyright © 1989 by the Weed Science Society of America 

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References

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