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Field persistence of bioavailable flumetsulam

Published online by Cambridge University Press:  12 June 2017

David R. Shaw  and
Glen P. Murphy
Glen P. Murphy
Affiliation:
Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS 39762
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Abstract

Field research was conducted in 1994 and 1995 to monitor the dissipation of flumetsulam in five Mississippi soils for a period of 16 wk. These soils allowed evaluation of flumetsulam persistence across three soil series with a relatively constant soil pH of 6.0, as well as across three soils of varied pH from 6.0 to 7.6 within a constant soil series. Bioavailability was determined with a rice root length bioassay. Predicted half-lives ranged from 20 to 26 d in 1994 and from 23 to 46 d in 1995. Persistence decreased with increasing cumulative rainfall and decreasing organic matter content (within a range of 1.2 to 3.5%). Soil pH had no measurable effect on flumetsulam persistence.

Keywords

Flumetsulam, N-(2,6-difluorophenyl)-5-methyl[1,2,4]triazolo[1,5-a]pyrimidine-2-sulfonamiderice, Oryza sativa (L.)Dissipationbioassaysoil organic mattersoil pH
Type
Soil, Air, and Water
Information
Weed Science , Volume 45 , Issue 4 , August 1997 , pp. 568 - 572
Copyright
Copyright © 1997 by the Weed Science Society of America 

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