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Transformation and Persistence of Chlorsulfuron in Prairie Field Soils

Published online by Cambridge University Press:  12 June 2017

Allan E. Smith  and
Andrew I. Hsiao
Allan E. Smith
Affiliation:
Agric. Canada, Res. Stn., Box 440, Regina, SK, Canada S4P 3A2
Andrew I. Hsiao
Affiliation:
Agric. Canada, Res. Stn., Box 440, Regina, SK, Canada S4P 3A2
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Abstract

After 45 weeks, between 5 and 8% of the applied radioactivity from 14C-chlorsulfuron {2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino] carbonyl] benzenesulfonamide} applied to small sandy loam plots was recovered as chlorsulfuron and about 15% as 2-chlorobenzenesulfonamide. After 95 weeks, 2% of the original radioactivity remained as chlorsulfuron and 20% as the sulfonamide. The persistence of formulated chlorsulfuron was investigated using small field plots at two locations for three successive years. Between 3 and 16% of the herbicide applied during May was detected in the top 10-cm soil layers the following May using a corn-root (Zea mays L.) bioassay procedure.

Keywords

Degradationmetabolismresidues
Type
Soil, Air, and Water
Information
Weed Science , Volume 33 , Issue 4 , July 1985 , pp. 555 - 557
Copyright
Copyright © 1985 by the Weed Science Society of America 

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References

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