Herbicidal agents

摘要

Herbicidal agents containing as active ingredient a compound of the formula <IMAGE> in which R represents halogen, C1-C4-alkyl, C1-C2-alkoxy or C1-C2-alkylthio, C1-C2-halogeno-alkyl, NO2SO2CH3, SO2NH2, -COOCH3, CN, with the proviso that R2 cannot be alkoxy when (R)n is alkyl, R1 and R3 represent C1-C6-alkyl, R2 represents C1-C6-alkyl, CH2Cl or C1-C6-alkoxy, X is oxygen or sulfur and n is an integer of from 1 to 3 are especially useful for combatting annual weed grasses in dicotyledonous and even monocotyledonous crop plants.