| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition capable of surely controlling major paddy field weeds with a small amount of the composition, for a long time by single application and causing no injury against paddy rice by using a substituted benzoyl cyclic enone derivative with another compound having herbicidal activity in combination. SOLUTION: This composition is obtained by compounding a substituted benzoyl cyclic enone derivative of formula I A is S(O)n R<1> [R<1> is an alkyl, a cycloalkyl, benzyl, etc.; (n)=0, 2], etc.} with a halogen-substituted benzoyl pyrazole derivative having herbicidal activity. As the halogen-substituted benzoyl pyrazole derivative, a compound having herbicidal activity of formula II [R<3> is H or an alkyl; R<4> and R<5> are each an alkyl; R<6> is H or an alkyl; Y is a sulfonyl, or a carbonyl; (m) is 0-3] is preferable. As the compound of formula II, 4-(2,4-dichlorobenzoyl-1,3-dimethyl1H-pyrazol-5-yl-p-toluenesulfonate, etc., is especially preferable. The composition can be applied in a wide season from before the occurrence to the growth of weeds. |
