1. Combinations of the active substance comprising a synergistically active combination of at least one compound of the general formula (I) in which R & lt 1 & gt is hydrogen, amino, hydroxy or in each case optionally, singly or repeatedly, the same or differently substituted CC alkyl, CC alkenyl, CC -alkynyl or CC-cycloalkyl, the substituents independently of one another being selected from halogen, cyano, nitro, hydroxy, CC-alkoxy, CC-alkylthio, CC-alkylsulfinyl, C1-C6 alkylsulfonyl, (CC-alkoxy) carbonyl, CC-alkylamino, di- (Ci-6-alkyl) amino, CC-cyclo (CC-alkyl) CC-cycloalkylamino, R1 is hydrogen, CC-alkyl, CC-alkenyl, CC-alkynyl, CC-cycloalkyl, CC-alkoxy, CC-alkylamino, di- (C1 -C6 alkyl) amino, CC -cycloalkylamino, CC-alkoxycarbonyl or CC-alkylcarbonyl, Rзна is hydrogen or in each case, if necessary, singly or repeatedly, the same or differently substituted CC-alkyl, CC-alkoxy, CC-alkenyl, CC-alkynyl, C-C-cycloalkyl, CC-cycloalkyl-CC-alkyl, the substituents independently of each other may be selected from amino, CC-cycloalkylamino, halogen, cyano, carboxyl, carbamoyl, nitro, hydroxy, CC-alkyl, CC-haloalkyl, CC-cycloalkyl, CC-alkoxy, CC-haloalkoxy, C1-C6 alkylthio, C -C-alkylsulfinyl, C1-C6 alkylsulfonyl, CC-alkoxycarbonyl, CC-alkylcarbonyl, CC-trialkylsilyl, or saturated or partially saturated g heterocyclic ring, aromatic or heteroaromatic ring or saturated, partially saturated or aromatic heterobicyclic ring,
