The present invention relates to herbicide compounds, compositions containing them and methods of inhibiting weeds by application of the compositions.;The herbicidal composition is 2-[(4-heterocyclic-phenoxymethyl) phenoxy] alkanoate of the general formula:;Wherein A is a derivative of alkanoate bound to phenoxy oxygen at alpha carbon; Q is 4-difluoromethyl-4,5-dihydro-3-methyl-1,2,4-triazol-5 (1H) -one-1-yl, 3,4,5,6-tetrahydro Loftalimide-1-yl, 1- (1-methylethyl) imidazolidin-2,4-dione-3-yl, 1,4-dihydro-4- (3-fluoropropyl) -5H Tetrazol-5-one-yl, 3-chloro-4,5,6,7-tetrahydroindazol-2-yl, 4-methyl-1, 2, 4-triazine-3,5-dione- 2-yl, 8-thia-1,6-diazabicyclo [4.3.0] -nonan-7-one-9-ylimino or 1-methyl-6-trifluoromethyl-2,4-pyrimidine Dion-3-yl; X is hydrogen, methyl, fluorine or chlorine; Y is hydrogen; W is oxygen or sulfur; Z is hydrogen, fluorine, chlorine, bromine, lower alkyl or methoxy; Z 'is hydrogen, fluorine or chlorine; The AO-group may be at the 2,3 or 4-position of the phenyl ring.
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