Herbicidal 3-(bicyclic heterocyclyl)-6-fuoroalkyluracils of the formula ##STR1## in which M is fluoroalkyl(C.sub.1-6); R is hydrogen, alkyl(C.sub.1-6), 2-alkynyl(C.sub.3-6); 2-alkenyl(C.sub.3-6,), or cyanoalkyl(C.sub.1-6); R.sup.1 is hydrogen or alkyl(C.sub.1-6); R.sup.2 is hydrogen or alkyl (C.sub.1-6); Y is hydrogen, fluorine, chlorine, or bromine; X is hydrogen, fluorine, chlorine, bromine, cyano, alkyl(C.sub.1-6), or fluoroalkyl(C.sub.1-6); and n is 0 or 1.
(EN) Herbicidal 3-(bicyclic heterocyclyl)-6-fluoroalkyluracils of formula (I), in which M is fluoroalkyl(C1-6); R is hydrogen, alkyl(C1-6), 2-alkynyl(C3-6); 2-alkenyl(C3-6), or cyanoalkyl(C1-6); R1 is hydrogen or alkyl(C1-6); R2 is hydrogen or alkyl(C1-6); Y is hydrogen, fluorine, chlorine, or bromine; X is hydrogen, fluorine, chlorine, bromine, cyano, alkyl(C1-6), or fluoroalkyl(C1-6); and n is 0 or 1.(FR) 3-(hétérocyclyle bicyclique)-6-fluoroalkyluraciles, à pouvoir herbicide de formule (I); dans laquelle M est fluoroalkyle (C1-6); R est hydrogène, alkyle (C1-6), 2-alcynyle (C3-6), 2-alcényle (C3-6) ou cyanoalkyle (C1-6); R1 est hydrogène ou alkyle (C1-6); R2 est hydrogène ou alkyle (C1-6); Y est hydrogène, fluor, chlore, brome; X est hydrogène, fluor, chlore, brome, cyano, alkyle (C1-6), ou fluoroalkyle (C1-6); et n est 0 ou 1.