| 摘要 |
Herbicidally active thiolcarbamates are employed in combination with certain halogenated allylthioisopropyl N-methylcarbamates having the formula <IMAGE> in which R4, R5, R6, R7, R8, and R9 are independently halogen. In a typical application, the N-methylcarbamate 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.
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