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Substituted Urea Herbicides: Their Electrophoretic Behavior and the Influence of Clay Colloid in Nutrient Solution on Their Phytotoxicity

Published online by Cambridge University Press:  12 June 2017

C. W. Coggins Jr.  and
A. S. Crafts
C. W. Coggins Jr.
Affiliation:
University of California, Riverside
A. S. Crafts
Affiliation:
University of California, Davis
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Extract

Interest in the substituted urea compounds for their herbicidal properties was precipitated by Bucha and Todd's (3) report that 3–(p–chlorophenyl)–1,1–dimethylurea (monuron) was extremely phytotoxic. Freed (6) reported that only asymmetrically substituted ureas are effective as herbicides. Substitution on the para position was reported to result in greatest activity followed by meta. An ortho substitution reduced activity to half or less than that of the comparable para substitution.

Type
Research Article
Information
Weeds , Volume 7 , Issue 3 , July 1959 , pp. 349 - 358
Copyright
Copyright © 1959 Weed Science Society of America 

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References

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