FIELD: agriculture. SUBSTANCE: pyrazole derivatives of formula I wherein is hydrogen or R1 alkyl; C1-4 is R2 alkyl; C1-4 are hydrogen, halogen or X1 and X4 alkyl; each or C1-4 and X2 is X3 alkyl; Q is hydrogen or group of formula A-B; A is C1-4, -CO- or -SO2-; B is -CH2CO-, alkyl, C1-8 cycloalkyl or group of formula (a); Y is halogen, nitro, alkyl or alkoxy; m is 0, 1 or 2, n is 0 or 2, or salts thereof have high herbicidal activity and show phytoxicity to maize and puddy rice. EFFECT: improved properties of the title compounds. 12 cl, 33 ex, 13 tbl C3-8
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Authors
Dates
1999-07-27—Published
1994-08-01—Filed