Herbicidally active thiolcarbamates are employed in combination with certain substituted carbamates having the formula
in which
R4 and R5 are each methyl,
R4 and R5 conjointly form C1-C4 alkylenedioxy,
R4 is -CF3 and R5 is hydrogen, or
R4 is -CH2Br and R5 is hydrogen.
In a typical application, the carbamate 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.
具有除草活性的
硫代
氨基甲酸乙酯可与某些取代的
氨基甲酸酯结合使用,这些
氨基甲酸酯的式中 R4 和 R5 分别为甲基,R4 和 R5 共同形成 C1-C4 亚烷基二氧基,R4 为-
CF3,R5 为氢,或 R4 为-
CH2Br,R5 为氢。 在典型的应用中,
氨基甲酸酯的用量足以降低
硫代
氨基甲酸乙酯在土壤中的降解速度。 因此,
硫代
氨基甲酸乙酯的除草效果得到增强和延长,使
除草剂的单次施用在更长的时间内有效。