1. A method of controlling phytopathogenic diseases on useful plants or on propagation material thereof, which comprises applying to the useful plants, their location, or propagation material thereof a combination of components (A) and (B) in a synergistically effective amount, wherein component (A) is a a compound of formula I, wherein R represents hydrogen or methoxy Q represents gdeRpredstavlyaet hydrogen, halogen or C-alkyl R is hydrogen, halogen, C-alkyl, C alkenyl, C alkynyl, C cycloalkyl-C Sulky nile, halophenoxy, halophenyl-C-alkynyl, C (S-alkyl) = NO-C-alkyl, C-Sgalogenalkil, C-Sgalogenalkoksi, C-Sgalogenalkenil or C-Sgalogenalkeniloksi R is hydrogen, halogen, C-alkyl R , R independently of one another represent hydrogen, halogen or with the proviso that at least one of R, r and Ryavlyaetsya other than hydrogen R is hydrogen, C-alkyl, C-C-or Sgalogenalkil Salkoksialkil iRpredstavlyaet hydrogen or methoxy and agrochemically acceptable salts / isomers / structural isomers / stereoisomers / diastereoisomers / enantiomers / tautomers and N-oxides of such compounds, and the component (B) is a compound selected from the group consisting of (B1) a strobilurin fungicide , (B2) an azole fungicide, (B3) a morpholine fungicide, (B4) an anilino-pyrimidine fungicide, (B5) a fungicide selected from the group consisting izanilazina, arsenates, benalaxyl, benalaxyl-M, benodanila, benomyl, benthiavalicarb, benthiavalicarb-isoprene yl, biphenyl, bitertanol, blasticidin-S, Bordeaux mixture, boscalid, bupirimate, cadmium chloride, captafol, captan, carbendazim
