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Adsorption, Bioactivity, and Evaluation of Soil Tests for Alachlor, Acetochlor, and Metolachlor

Published online by Cambridge University Press:  12 June 2017

Jerome B. Weber  and
C. John Peter
Jerome B. Weber
Affiliation:
Weed Sci., North Carolina State Univ., Raleigh, NC 27650
C. John Peter
Affiliation:
E. I. DuPont de Nemours & Co., Inc. Wilmington, DE 19898
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Abstract

Alachlor [2-chloro-2′,6′-diethyl-N-(methoxymethyl) acetanilide], acetochlor [2-chloro-N-(ethoxymethyl)-6′-ethyl-o-acetotoluidide] and metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide] were adsorbed in similar amounts, approximately one-third that of the reference compound prometryn [2,4-bis(isopropylamino)-6-(methylthio)-s-triazine] by Ca-organic matter and seven soils. Adsorption isotherms for the four herbicides by Ca-montmorillonite were of the same shape, but different bonding mechanisms were involved. Adsorption and bioactivity of the acetanilide herbicides were correlated with organic matter, clay content, and other soil parameters as determined by two different soil- testing laboratories.

Keywords

Herbicide inactivationadsorption mechanismssoil testingorganic-matter analysisprometryn adsorption
Type
Research Article
Information
Weed Science , Volume 30 , Issue 1 , January 1982 , pp. 14 - 20
Copyright
Copyright © 1982 by the Weed Science Society of America 

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References

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