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Effect of Long-term Vetch (Vicia villosa) Cover Crop and Tillage System on Fluometuron Dissipation from Surface Soil

Published online by Cambridge University Press:  12 June 2017

Blake A. Brown ,
Robert M. Hayes ,
Donald D. Tyler  and
Thomas C. Mueller
Blake A. Brown
Affiliation:
Univ. Tennessee. Knoxville, TN
Robert M. Hayes
Affiliation:
Univ. Tennessee. Knoxville, TN
Donald D. Tyler
Affiliation:
Univ. Tennessee. Knoxville, TN
Thomas C. Mueller*
Affiliation:
Univ. Tennessee. Knoxville, TN
*
Address correspondence to: T.C. Mueller, P.O. Box 1071, Knoxville, TN 37901.
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Abstract

This research examined the effect of mechanical soil disturbance (none or tilled) and legume crop residues (none or hairy vetch) on fluometuron dissipation for 2 yr from the top 0 to 8 cm of soil in a 10 yr field experiment. Soil pH in the upper 0 to 8 cm was ≤ 5.6, and soil organic matter was highest in plots not-tilled and plots which had a vetch cover crop. Calculated initial half-lives of fluometuron ranged from 19 to 38 d in the 2 yr. Neither tillage nor cover crop influenced early-season fluometuron dissipation. However, there were detectable amounts of fluometuron in all treatments 1 yr after application.

Keywords

Fluometuron, (N,N-dimethyl-N′-[3-(trifluoromethyl)phenyl]urea)cotton, Gossypium hirsutum L. DPL 50vetch, Vicia villosa RothDegradationpersistenceno-tillbioavailability
Type
Soil, Air, and Water
Information
Weed Science , Volume 44 , Issue 1 , March 1996 , pp. 171 - 175
Copyright
Copyright © 1996 by the Weed Science Society of America 

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Footnotes

Current address of senior author: DuPont Ag Research. 6011 Briar Rosa Drive, Lincoln, NE 68507.

References

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