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Chlorsulfuron and Metsulfuron Residues on Double-Cropped Soybeans (Glycine max)

Published online by Cambridge University Press:  12 June 2017

Ronald L. Ritter
Affiliation:
Agron. Dep., Univ. Maryland, College Park, MD 20742
Thomas C. Harris
Affiliation:
Agron. Dep., Univ. Maryland, College Park, MD 20742
Lisa M. Kaufman
Affiliation:
Agron. Dep., Univ. Maryland, College Park, MD 20742

Abstract

In field experiments in 1981, 36 g ai/ha of chlorsulfuron {2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino] carbonyl] benzenesulfonamide} applied to winter wheat (Triticum aestivum L. ‘Arthur’) in early spring reduced seed yield in conventional and no-till plantings of double-cropped soybeans [Glycine max (L.) ‘Essex’]. From 1982 to 1984, three rates of chlorsulfuron (9, 18, and 36 g/ha) were applied at three different times (preemergence, early winter, and early spring) to study their residual effects on double-cropped soybeans. Chlorsulfuron at 36 g/ha applied preemergence or early spring reduced soybean seed yields when averaged over the 3-yr period. Metsulfuron {2-[[[[(4-methoxy-6-methyl-1,3,5-triazine-2-yl)amino] carbonyl] amino] sulfonyl] benzoic acid} was tested at three rates (4.5, 9, and 18 g/ha) applied at three times (same as chlorsulfuron) in field studies in 1983 and 1984. Metsulfuron did not injure subsequently planted no-till soybeans.

Type
Research
Copyright
Copyright © 1988 by the Weed Science Society of America 

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