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Decomposition of Picloram by Soil Microorganisms: A Proposed Reaction Sequence

Published online by Cambridge University Press:  12 June 2017

R. W. Meikle
Affiliation:
The Dow Chemical Company, Ag-Organics Research Laboratories, Walnut Creek, CA 94598
C. R. Youngson
Affiliation:
The Dow Chemical Company, Ag-Organics Research Laboratories, Walnut Creek, CA 94598
R. T. Hedlund
Affiliation:
The Dow Chemical Company, Ag-Organics Research Laboratories, Walnut Creek, CA 94598
C. A. I. Goring
Affiliation:
The Dow Chemical Company, Ag-Organics Research Laboratories, Walnut Creek, CA 94598
W. W. Addington
Affiliation:
The Dow Chemical Company, Ag-Organics Research Laboratories, Walnut Creek, CA 94598

Abstract

The 6-hydroxy derivative of picloram (4-amino-3,5,6-trichloropicolinic acid) is not on the main pathway of the soil microbial decomposition sequence for picloram. Rather it may be formed in very small amounts in a competing reaction. Decarboxylation of picloram cannot be the initial reaction in this sequence and, in fact, does not occur.

Type
Research Article
Copyright
Copyright © 1974 by the Weed Science Society of America 

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