Agrochemical compositions having fungicidal action and comprising as active compounds compounds of the formula I where R1 is hydrogen, C1-C6-alkyl, C1-C6-alkylcarbonyl, formyl or C1-C6-haloalkylcarbonyl; R2 is halogen, C1-C6-alkylthio, C1-C6-alkoxy, C3-C6-cycloalkyl-C1-C6-alkoxy, C1-C6-alkoxy-C1-C6-alkyl, halo-C1-C6-alkoxy, C1-C6-alkylsulfonyl, C1-C6-alkylsulfinyl, halo-C1-C6-alkylsulfonyl, cyano or a radical NR13R14; R3-R12 are hydrogen, halogen, C1-C8-cycloalkyl, C1-C6-alkyl, halo-C1-C6-alkyl, C1-C6-alkoxy, halo-C1-C6-alkoxy, C1-C6-alkylsulfonyl, halo-C1-C6-alkylsulfonyl, formyl, C1-C6-alkylcarbonyl, cyano, C1-C6-alkylthio or phenyl, which may be unsubstituted or substituted by halogen, C1-C6-alkyl or halo-C1-C6-alkyl, R13 is hydrogen, C1-C6-alkyl, R14 is C1-C6-alkyl, C1-C8-cycloalkyl or, together with R13 and the nitrogen atom to which they are attached, a saturated or unsaturated heterocyclic five- or six-membered ring which contains one or two heteroatoms selected from the group consisting of nitrogen and oxygen, and their agriculturally useful salts are described.