Author:
Carlson Wayne C.,Wax L. M.
Abstract
The phytotoxicity of 3-[p-(p-chlorophenoxy)phenyl]-1,1-dimethylurea (chloroxuron) usually decreased as the stage of growth of five weed species at treatment increased. Giant foxtail (Setaria faberiiHerrm.), velvetleaf (Abutilon theophrastiMedic.), and the cotyledonary stage of cocklebur (Xanthium pensylvanicumWallr.) were most resistant to the herbicide. Ivyleaf morningglory (Ipomoea hederacea(L.) Jacq.) and jimsonweed (Datura stramoniumL.) were more susceptible to chloroxuron. Soybean (Glycine max(L.) Merr.) seemed less susceptible at the cotyledonary stage than at later stages. Phytotoxicity on both weeds and soybeans was increased by increased temperature and relative humidity following chloroxuron application. The phytotoxicity of chloroxuron also was increased by simulated rainfall in greenhouse studies.
Publisher
Cambridge University Press (CUP)
Subject
Plant Science,Agronomy and Crop Science
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