4-Phenyl-1,2,3-thiadiazoles as herbicide extenders.

摘要

Herbicidally active thiolcarbarbamates are employed in combination with certain 4-phenyl-1,2,3-thiadiazoles having the formula <CHEM> in which R<4> is selected from the group consisting of trifluoromethyl and -O@NH-R<5> in which R<5> is selected from the group consisting of C1-C3 alkyl, phenyl, and phenyl substituted with one or more members selected from the group consisting of halogen and trifluoromethyl. In a typical application, the 4-phenyl-1,2,3-thiadiazole is included in sufficient quantity to lessen the rate of soil degradation of the thiolcarbamate. As a result, the herbicidal effectiveness of the thiolcarbamate is enhanced and prolonged, rendering a single application of the herbicide effective over a longer period of time.