Compositions for controlling plant diseases caused by fungal plant pathogens are described, comprising:(a) a fungicidally effective amount of a compound of Formula I (including all geometric and stereoisomers, N-oxides, and agriculturally suitable salts thereof)wherein A, B, W, R1, R2, and R3 are as defined in the disclosure; and(b) at least one compound selected from the group consisting of (b2) compounds acting at the bc1 complex of the fungal mitochondrial respiratory electron transfer site.Also disclosed are methods for controlling plant diseases caused by fungal plant pathogens that involves applying an effective amount of the combinations described.