| 摘要 |
A herbicidal composition comprising as an active ingredient a compound of the formula: <IMAGE> wherein R1 is a C1-C4 alkyl group, a phenyl group or a C1-C4 alkoxy group, R2 is a C1-C4 alkyl group, R3 and R4, which are the same or different, are each a hydrogen atom, a C1-C4 alkyl group or a phenyl group and R5 is a 2,4-dichlorophenyl group, a 4-trifluoromethylphenyl group or a 5-trifluoromethylpyridin-2-yl group, and an inert carrier.
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