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Absorption, translocation, and metabolism of CGA 362622 in cotton and two weeds

Published online by Cambridge University Press:  20 January 2017

Robert J. Richardson ,
Kriton K. Hatzios  and
Henry P. Wilson
Robert J. Richardson
Affiliation:
Eastern Shore Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University, Painter, VA 23420
Kriton K. Hatzios
Affiliation:
Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
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Abstract

Absorption, translocation, and metabolism of the herbicide CGA 362622 were studied in cotton, spurred anoda, and smooth pigweed. 14C-labeled CGA 362622 was foliarly applied to cotton at the cotyledon to the one-leaf growth stage or at the two- to three-leaf growth stage and to spurred anoda and smooth pigweed at the four- to six-leaf growth stage. Differential absorption, translocation, and metabolism contributed to the differential tolerance of cotton, spurred anoda, and smooth pigweed to CGA 362622. Rapid translocation and a slow rate of metabolism appear to explain the susceptibility of smooth pigweed. Reduced absorption and translocation as well as rapid metabolism contribute to the CGA 362622 tolerance of cotton at the two growth stages. Limited translocation may explain the intermediate tolerance of spurred anoda to CGA 362622.

Keywords

CGA 362622, N-[(4,6-dimethoxy-2-pyrimidinyl)carbamoyl]-3-(2,2,2-trifluoroethoxy)-pyridin-2-sulfonamide sodium saltcotton, Gossypium hirsutum L. GOSHIsmooth pigweed, Amaranthus hybridus L., AMACHspurred anoda, Anoda cristata (L.) Schlecht., ANVCRSulfonylurea herbicidesherbicide toleranceherbicide sensitivity
Type
Research Article
Information
Weed Science , Volume 51 , Issue 2 , April 2003 , pp. 157 - 162
Copyright
Copyright © Weed Science Society of America 

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