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Dissipation of Chlorimuron in Southern Soils

Published online by Cambridge University Press:  12 June 2017

William K. Vencill and
Philip A. Banks
William K. Vencill
Affiliation:
Crop and Soil Sci. Dep., Univ. Georgia, Athens, GA 30602
Philip A. Banks
Affiliation:
Marathon Agric. and Environ. Consulting, 2649 Navajo Road, Las Cruces, NM 88005
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Abstract

Chlorimuron dissipation as determined by bioavailability in nine soils across the Southern United States was characterized by rapid initial loss followed by a slower dissipation rate following field application of the herbicide in soybean. The rate of bioavailable dissipation varied by year and soil The calculated time for 50% dissipation of bioavailable chlorimuron (DT50) ranged from 5 to 18 d in 1988, 5 to 20 d in 1989, and 5 to 11 d in 1990. In 2 of 3 yr, chlorimuron DT50 was positively correlated with temperature 24 h after application. Chlorimuron DT50 was positively correlated with precipitation in 1988 when regional rainfall was below normal and negatively correlated with precipitation 30 d after application in 1989 when regional rainfall was above normal.

Keywords

Soybean, Glycine max (L.)chlorimuron, 2-[[[[(4-chloro-6-methoxy-2-pyrimidinyl)amino]-carbonyl]amino]sulfonyl]benzoic acidSulfonylureas

Information

Type
Soil, Air, and Water
Information
Weed Science , Volume 42 , Issue 4 , December 1994, pp. 625 - 628
Copyright
Copyright © 1994 by the Weed Science Society of America 

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References

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