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Effect of Alachlor, Butylate, and Chlorbromuron on Carbofuran Distribution and Metabolism in Barley and Corn

Published online by Cambridge University Press:  12 June 2017

Donald Penner
Affiliation:
Dep. of Crop and Soil Sci., Michigan State University, East Lansing, MI 48823
Roy W. Early
Affiliation:
Dep. of Crop and Soil Sci., Michigan State University, East Lansing, MI 48823

Abstract

The 14C-labelled insecticide, 2,3-dihydro-2,2-dimethyl-7-benzofuranyl methylcarbamate (carbofuran), supplied to the roots of barley (Hordeum vulgare L. ‘Larker’) and corn (Zea mays L. ‘Mich 400’) seedlings was readily taken up and transported to the shoots. Alachlor [2-chloro-2′,6′-diethyl-N-(methoxymethyl)acetanilide] did not inhibit carbofuran metabolism in barley or corn. Butylate (S-ethyl diisobutylthiocarbamate) slightly inhibited carbofuran metabolism in corn roots. Chlorbromuron [3-(4-bromo-3-chlorophenyl)-1-methoxy-1-methylurea] inhibited carbofuran metabolism by decreasing the concentration of 14C found in the acetone-insoluble residue and the methanol-soluble fraction in barley shoots. Chlorbromuron increased the carbofuran content and decreased the 2,3-dihydro-3-hydroxy-2,2-dimethyl-7-benzofuranyl methylcarbamate (3-hydroxycarbofuran) content of the chloroform-soluble fraction in both barley shoots and roots. Chlorbromuron did not affect carbofuran metabolism in corn.

Type
Research Article
Copyright
Copyright © 1973 Weed Science Society of America 

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References

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