Mixtures of fused pyrimidinones and dinitrophenolic compounds useful for controlling powdery mildews

Abstract

This invention discloses fungicidal compositions comprising(1) at least one compound selected from 2-(R2)-3-(R1)-pyrimidin-4(3H)-ones fused at the 5- and 6-positions to G(R3)(R4) (i.e. compounds of Formula (I), including all geometric and stereoisomers, as defined in the disclosure), N-oxides, and suitable salts thereof, wherein G is a fused phenyl, thiophene or pyridine ring; R1 is C1-C6 alkyl or C4-C7 cycloalkylalkyl; R2 is C1-C6 alkyl, C1-C6 alkoxy or C1-C6 alkylthio; R3 is halogen; and R4 is hydrogen or halogen; and (2) at least one dinitrophenolic compound selected from 1,3-dinitro-5-R5-benzenes further substituted at either the 2- or 4-position with —OC(═O)J (i.e. compounds of Formula (III) and/or compounds of Formula (II), including all geometric and stercoisomers, as defined in the disclosure), wherein J is C1-C6 alkyl, C1-C6 alkoxy or C2-C6 alkenyl; and R5 is C1-C8 alkyl. This invention also discloses methods for controlling powdery mildew plant diseases caused by fungal plant pathogens which involve applying to the plant or portion thereof, or to the plant seed or seedling, a fungicidally effective amount of such compositions.

Dependencies are inferred from the claim text.