A COMPOSITION COMPRISING A CARBOXAMIDE COMPOUND REPRESENTED BY FOLLOWING FORMULA (I), WHEREIN R¹ REPRESENTS A HYDROGEN ATOM OR A METHYL GROUP, AND R² REPRESENTS A METHYL GROUP, A DIFLUOROMETHYL GROUP OR A TRIFLUOROMETHYL GROUP, AND ONE OR MORE AZOLE COMPOUNDS SELECTED FROM GROUP (A) CONSISTING OF PROPICONAZOLE, PROTHIOCONAZOLE, TRIADIMENOL, PROCHLORAZ, PENCONAZOLE, TEBUCONAZOLE, FLUSILAZOLE, DINICONAZOLE, BROMUCONAZOLE, EPOXICONAZOLE, DIFENOCONAZOLE, CYPROCONAZOLE, METCONAZOLE, TRIFLUMIZOLE, TETRACONAZOLE, MYCLOBUTANIL, FENBUCONAZOLE, HEXACONAZOLE, FLUQUINCONAZOLE, TRITICONAZOLE, BITERTANOL, IMAZALIL, IPCONAZOLE, SIMECONAZOLE, HYMEXAZOL, ETRIDIAZOLE AND FLUTRIAFOL.