FIELD: agriculture. SUBSTANCE: composition has a derivative of uracil 1, where R1 - trifluoromethyl or pentafluoroethyl; R2 - group of formula 2 and 3, where R4 - hydrogen, fluorine, chlorine; A2 - hydrogen, C1-C3-alkyl, allyl, propargyl, 1-methylpropargyl, cyanomethyl, methoxymethyl, benzyl, o-methylbenzyl, p-methylbenzyl, picolyl; R6 - group of formula 4 and 5, SCH2CO2CH3 or N(R8)SO2R7, where R7 - straight or branched C1-C4-alkyl, 3- chloropropyl, or 2,2,2-trifluoroethyl; R8 - hydrogen, C1-C2-alkyl or methylsulfonyl, at concentration 0.1-90 wt. -% . special additions - the rest. Formulas 1, 2, 3, 4, 5 are: 
, 
, 
, 
, 
, respectively. EFFECT: enhanced effectiveness of composition. 14 tbl
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