A fungicidal composition comprising a mixture of components (A) and (B), wherein component (A) is a quinoline-3-carboxamide of formula (I) and component (B) is selected from the group consisting of pydiflumetofen, benzovindiflupyr, difenoconazole, hexaconazole, azoxystrobin, fludioxonil, cyprodinil, fluazinam, isopyrazam, pyroquilon, tricyclazole, chlorothalonil, propiconazole, aminopyrifen, penconazole, prothioconazole, mancozeb, fenpropimorph, fenpropidin, sulfur, and a biofungicide comprising a Bacillus subtilis strain, as well as to use of the compositions in agriculture or horticulture for controlling or preventing infestation of plants by phytopathogenic microorganisms, preferably fungi.
