Ciba-geigy Corporation

Ren E Zurfl Uh

Ronald Zeun

Microbicidal composition for use in plants, having a synergistic action and comprising at least two active ingredient components, in which component I is a compound selected from the group of the compounds ##STR1## in which: X is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, trifluoromethyl, cyano, thiocarbamoyl or nitro, and Y is hydrogen or fluorine; ##STR2## in which: Z radicals are identical or different and are halogen, cyano, nitro, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, trifluoromethyl, phenyl, phenoxy or benzyl, these aromatic groups being unsubstituted or not more than trisubstituted by identical or different substituents from the series comprising halogen, cyano, nitro, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or trifluoromethyl, and n is 0 to 3; and ##STR3## in which: U is oxygen or the group --CH.sub.2 O--, A radicals are identical or different and are halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or trifluoromethyl, and n is 0 to 3; and in which component II is the 2-anilinopyrimidine of the formula II ##STR4## 4-cyclopropyl-6-methyl-N-phenyl-2-pyrimidineamine or a salt or a metal complex thereof.

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B ulach, Switzerland

Ren E Zurfl Uh