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Effect of Acifluorfen on the Absorption, Translocation, and Metabolism of Chlorimuron in Certain Weeds

Published online by Cambridge University Press:  12 June 2017

Dan E. Westberg  and
Harold D. Coble
Dan E. Westberg
Affiliation:
Dep. Crop Sci., North Carolina State Univ., Raleigh, NC 27695-7620
Harold D. Coble
Affiliation:
Dep. Crop Sci., North Carolina State Univ., Raleigh, NC 27695-7620
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Abstract

Foliar absorption of 14-chlorimuron at 6, 12, 24, and 48 h after application to common cocklebur was reduced when applied in combination with acifluorfen. A maximum reduction of 10% was observed at 48 h. 14C translocation to meristematic tissue above the treated leaves also was reduced by acifluorfen in common cocklebur at 24 and 48 h after treatment. Absorption and translocation of 14C-chlorimuron in sicklepod was not affected by acifluorfen. Thin layer chromatographic analysis of treated leaf extracts showed two metabolites in common cocklebur (Rf values of 0.0 and 0.42) and four metabolites in sicklepod (Rf values of 0.0, 0.16, 0.33, and 0.50). All metabolites were more polar than the parent compound (Rf value of 0.64). Addition of acifluorfen did not affect chlorimuron metabolism in common cocklebur but reduced metabolism in sicklepod. Absorption, translocation, and metabolism of acifluorfen in common cocklebur or sicklepod were not affected by the addition of chlorimuron.

Keywords

Acifluorfen, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acidchlorimuron, 2-[[[[(4-chloro-6-methoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]benzoic acidcommon cocklebur, Xanthium strumarium L. ♯ XANSTsicklepod, Cassia obtusifolia L. ♯ CASOBAntagonismherbicide interaction
Type
Feature
Information
Weed Technology , Volume 6 , Issue 1 , March 1992 , pp. 4 - 12
Copyright
Copyright © 1990 by the Weed Science Society of America 

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