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Postemergence Activity of Isoxaben

Published online by Cambridge University Press:  12 June 2017

Mark A. Schneegurt
Affiliation:
DowElanco. 9410 Zionsville Road, P.O. Box 68955, Indianapolis, IN 46268-1053
Jean L. Roberts
Affiliation:
DowElanco. 9410 Zionsville Road, P.O. Box 68955, Indianapolis, IN 46268-1053
Leslie A. Bjelk
Affiliation:
DowElanco. 9410 Zionsville Road, P.O. Box 68955, Indianapolis, IN 46268-1053
B. Clifford Gerwick
Affiliation:
DowElanco. 9410 Zionsville Road, P.O. Box 68955, Indianapolis, IN 46268-1053

Abstract

Barnyardgrass and many broadleaf weeds were severely stunted by POST applications of isoxaben. Most grasses were only moderately affected by isoxaben at rates up to 1 kg/ha. POST activity was enhanced by soil interception, but evident with foliar interception alone. Cell swelling in stems and in interveinal leaf lamina was observed after foliar application. A radiotracer study in redroot pigweed showed that only a small amount (3.3% of applied) of isoxaben entered the leaf following foliar application, and that little (0.08% of applied) isoxaben migrated beyond the point of application. The potential of isoxaben as a POST herbicide may be limited, in part, by poor absorption and translocation.

Type
Research
Copyright
Copyright © 1994 by the Weed Science Society of America 

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