FIELD: chemistry.
SUBSTANCE: invention relates to agriculture. A compound of formula 
where R1 denotes H; R2 denotes C1-C6 alkyl, optionally substituted R4; or benzyl, optionally substituted 1-3 R5; R3 denotes -S(O)2R6; R4 independently denotes halogen, C1-C6 alkyl, C1-C4 haloalkyl, C1-C4 alkoxy, C1-C4 haloalkoxy, C1-C4 alkylthio, C1-C4 haloalkylthio, amino, C1-C3 alkylamino, C2-C6 alkoxycarbonyl, C2-C6 alkylcarbonyl, C2-C6 alkylaminocarbonyl, hydroxyl or C3-C6 trialkylsilyl; R5 independently denotes halogen, C1-C6 alkyl, C1-C6 haloalkyl, C1-C6 alkoxy, C1-C6 haloalkoxy, C1-C6 alkylthio, C1-C6 haloalkylthio, amino, C1-C6 alkylamino, C2-C6 dialkylamino, C2-C6 alkoxycarbonyl or C2-C6 alkylcarbonyl, nitro, hydroxyl or cyano; and R6 denotes phenyl or benzyl, where each phenyl or benzyl can be optionally substituted with 1-3 R5, or thiophenyl. Said composition is sued to inhibit or prevent wheat leaf spot (Septoria tritici).
EFFECT: improved effectiveness of control.
5 cl, 11 tbl, 4 ex
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