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Preplant-Postemergence Herbicides for Legume Cover-Crop Control in Minimum Tillage Systems

Published online by Cambridge University Press:  12 June 2017

James L. Griffin  and
Seth M. Dabney
James L. Griffin
Affiliation:
Dep. Plant Pathol. and Crop Physiol., 302 Life Sci. Bldg., Baton Rouge, LA 70803
Seth M. Dabney
Affiliation:
Dep. Agron., Baton Rouge, LA 70803
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Abstract

Field studies were conducted to compare preplant-postemergence-applied paraquat, glyphosate, SC-0224, and HOE-39866 on subterranean clover, crimson clover, and hairy vetch cover crops. Subterranean clover control with paraquat at 1.1 kg ai/ha was about 80 and 100% when applied in early April and early May, respectively, regardless of spray volume (190 vs. 370 L/ha). Glyphosate and SC-0224 at 1.7 and 2.8 kg ai/ha applied in April controlled about 53% of subterranean clover. Subterranean clover control with HOE-39866 at 0.8 kg ai/ha applied in April was excellent. Paraquat at 0.6 kg ai/ha and HOE-39866 at 0.8 kg/ha regardless of application time controlled both crimson clover and hairy vetch. Grain sorghum and soybean yields following the legume cover crops generally were similar for the herbicide treatments.

Keywords

Glyphosate, N-(phosphonomethyl)glycineHOE-39866, ammonium (3-amino-3-carboxpropyl)-methylphosphinateparaquat, 1,1′-dimethyl-4,4′bipyridinium ionSC-0224, trimethylsulfonium carboxymethylaminomethylphosphonatecrimson clover, Trifolium incarnatum L. ♯3 TRFINgrain sorghum, Sorghum bicolor (L.) Moenchsoybean, Glycine max (L.) Merr.subterranean clover, Trifolium subterranean L. ♯ TRFSUhairy vetch, Vicia villosa Roth ♯ VICVINo-tillglyphosateHOE-39866paraquatSC-0224
Type
Research
Information
Weed Technology , Volume 4 , Issue 2 , June 1990 , pp. 332 - 336
Copyright
Copyright © 1990 Weed Science Society of America 

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References

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