| abstract |
The invention relates to a method of combatting phytopathogenic fungi, primarily powdery mildew. The method involves administering compositions according to the invention which contain as active principle at least one compound of the formula (I), <IMAGE> (I) wherein R1 is a C1-12 alkyl or a chloroethyl group, R2 is hydrogen, halogen, a C1-4 alkyl, a C1-4 alkoxy or nitro group, R3 is hydrogen, halogen, a C1-4 alkyl or nitro group, and R4 is hydrogen, halogen, a C1-4 alkyl or nitro group, or an acid addition salt thereof. |