The present invention relates to the use of N-phenylethylpyrazole carboxamide derivatives, in particular 3-difluoromethyl-1-methyl-1H-pyrazole-4-carboxylic acid [2-(2,4-dichlorophenyl)-2-methoxy-1-methylethyl]-amide for resistance management of phytopathogenic fungi in crops and to a method for resistance management of phytopathogenic fungi in crops.