The present invention relates to a method for controlling a phythopatogenic fungi selected from Sclerotinia spp., especially Sclerotinia sclerotiorum, on oilseed rape, comprising treating the plants, their seed or the soil with a fungicidally effective amount of the composition comprising mefentrifluconazole and a further active compound (II) selected from boscalid, dimoxystrobin, fenpropimorph, fluxapyroxad, inpyrfluxam, isoflucypram, kresoxym-methyl, metyltetraprole, quinofumelin, pyraclostrobin, 1-(4,5-dimethylbenzimidazol-1-yl)-4,4,6-trifluoro-3,3-dimethyl- isoquinoline, 6-chloro-1-(4,5-dimethylbenzimidazol-1-yl)-4,4-difluoro-3,3-dimethyl-isoquinoline, -(4,5-dimethylbenzimidazol-1-yl)-4,4-difluoro-3,3-dimethyl-isoquinoline, 4,4-difluoro-3,3- dimethyl-1-(4-methylbenzimidazol-1-yl)isoquinoline, 1-(6-chloro-7-methyl-pyrazolo[1,5-a]pyridin- 3-yl)-4,4-difluoro-3,3-dimethyl-isoquinoline, 4,4-difluoro-1-(6-fluoro-7-methyl-pyrazolo[1,5-1 a]pyridin-3-yl)-3,3-dimethyl-isoquinoline, 4,4-difluoro-3,3-dimethyl-1-(6-methylpyrazolo[1,5- a]pyridin-3-yl)isoquinoline, 1-(6,7-dimethylpyrazolo[1,5-a]pyridin-3-yl)-4,4-difluoro-3,3-dimethyl- isoquinoline and 1-(7,8-dimethylimidazo[1,2-a]pyridin-3-yl)-4,4-difluoro-3,3-dimethyl-isoquinoline.La présente invention concerne un procédé de lutte contre des champignons phythopatogènes choisis parmi Sclerotinia spp., en particulier le Sclerotinia sclerotibio, sur le colza oléagineux, comprenant le traitement des plantes, de leur graine ou du sol avec une quantité efficace du point de vue fongicide de la composition comprenant du méféntrifluconazole et un autre composé actif (II) choisi parmi boscalide, dimoxystrobine, fenpropimorphe, fluxapyroxade, inpyrfluxame, isoflucyprame, kresoxym-méthyle, metyltétraprole, quinofumeline, pyraclostrobine, 1-(4,5-diméthylbenzimidazol-1-yl)-4,4,6-trifluoro-3,3-diméthyl- isoquinoline, 6-chloro-1-(4,5-diméthylbenzimidazol-1-yl)-4,4-difluoro-3,3-diméthyl-isoquinoline, -(4,5-diméthylbenzimidazol-1-yl)-4,4-diflu
