| 摘要 |
Synergistic herbicidal activity is displayed by composition comprising the following two components: (a) a pyrrolidone of the formula <IMAGE> in which X is selected from the group consisting of hydrogen, chlorine, and methyl; Y is selected from the group consisting of hydrogen, chlorine, and bromine; Z is selected from the group consisting of chlorine and bromine; R1 is selected from the group consisting of hydrogen and C1-C4 alkyl; R2 is selected from the group consisting of hydrogen, C1-C4 alkyl, acetyl, trifluoromethyl, nitro, cyano, C1-C4 alkoxy, C1-C4 alkylthio, C1-C4 alkylsulfinyl, C1-C4 alkylsulfonyl, trifluoromethylthio, trifluoromethylsulfinyl, trifluoromethylsulfonyl, pentafluoropropionamido, and 3-methylureido; and R3 is selected from the group consisting of hydrogen, C1-C4 alkyl, chlorine and trifluoromethyl; and (b) a cyclohexenedione of the formula <IMAGE> in which R4 is 1'-(2-hydroxyethylimino)ethyl or acetyl, at a weight ratio of (a) to (b) of from about 0.01:1 to about 10:1.
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