| 摘要 |
Herbicidal compositions comprising as active ingredients (A) at least one 1,3-oxazin-4-one derivative of the formula <CHEM> wherein R is a methyl or ethyl group, Y is a halogen atom, a C1-6 alkyl group unsubstituted or substituted by one or more halogen atoms, or a haloalkoxy group unsubstituted or substituted by one or more halogen atoms, and n is 0, 1, 2 or 3; and (B) a sulfonylurea derivative such as 1-{[ortho(cyclopropylcarbonyl)phenyl]sulfamoyl}-3-(4,6-dimethoxy-2- pyrimidinyl)urea, provide improved herbicidal activity with low phytotoxicity.
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