COMPOSITIONS HERBICIDES CONTENANT DES DERIVES SUBSTITUES DE PHENYLSULFONYLUREE ET DU N-METHYLANILIDE D'ACIDE BENZOTHIAZOLE-2-YL-OXYACETIQUE, LEUR PREPARATION ET LEURS APPLICATIONS

L'INVENTION A TRAIT AU DOMAINE DES HERBICIDES.ELLE CONCERNE DES ASSOCIATIONS DE SUBSTANCES ACTIVES HERBICIDES SYNERGIQUES COMPRENANT UN DERIVE SUBSTITUE DE PHENYLSULFONYLUREE DE FORMULE GENERALE:(CF DESSIN DANS BOPI)ET DU N-METHYLANILIDE DE L'ACIDE BENZOTHIAZOLE-2-YL-OXY-ACETIQUE DE FORMULE:(CF DESSIN DANS BOPI)APPLICATION A LA LUTTE CONTRE DES MAUVAISES HERBES PERSISTANTES, NOTAMMENT POUR COMBATTRE DES MAUVAISES HERBES DES RIZIERES. A herbicidal synergistic compound combination containing as active ingredients (1) a compound selected from substituted phenylsulfonylurea derivatives of the general formula (I) in which X represents an oxygen atom or a direct bond, Y represents a hydrogen or chlorine atom, and R represents a group of the general formula in which R1 and R2 each independently represents a methyl group or a methoxy group, and (2) benzthiazol-2-yl-oxyacetic acid N-methylanilide of the formula (II) alone or in admixture with a solid or liquid diluent or carrier, is effective for controlling perennial weeds, especially paddy field weeds.