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Effect of insecticides on clomazone absorption, translocation, and metabolism in cotton

Published online by Cambridge University Press:  20 January 2017

A. Stanley Culpepper ,
Alan C. York ,
Janet L. Marth  and
Fredrick T. Corbin
Alan C. York
Affiliation:
Crop Science Department, North Carolina State University, Raleigh, NC 27695
Janet L. Marth
Affiliation:
Crop Science Department, North Carolina State University, Raleigh, NC 27695
Fredrick T. Corbin
Affiliation:
Crop Science Department, North Carolina State University, Raleigh, NC 27695
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Abstract

Disulfoton and phorate applied in the seed furrow greatly reduce clomazone phytotoxicity to cotton in the field, whereas aldicarb does not. An experiment was conducted to determine the effect of aldicarb, disulfoton, and phorate on 14C-clomazone absorption, translocation, and metabolism by cotton grown in a sandy loam soil. Clomazone at 0.87 μg g−1 of soil alone or in combination with aldicarb at 0.6 μg g−1 of soil reduced cotton root and shoot growth 26 to 33%. Root and shoot growth were not reduced by clomazone plus disulfoton or phorate at 0.6 μg g−1 of soil. Protection of cotton against injury by clomazone was not explained by reduced absorption or translocation of clomazone or a metabolite to the shoot. Clomazone metabolism was reduced by disulfoton and phorate, thus indicating a clomazone metabolite may be more toxic to cotton.

Keywords

Aldicarbclomazonedisulfotonphoratecotton, Gossypium hirsutum L. ‘McNair 235’Carbamate insecticidesherbicide–insecticide interactionsorganophosphate insecticides
Type
Research Article
Information
Weed Science , Volume 49 , Issue 5 , October 2001 , pp. 613 - 616
Copyright
Copyright © Weed Science Society of America 

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