The present invention provides the compounds represented by the general formula (I): [wherein X is a halogen atom or an (C1-C3)alkyl group which may be substituted with a halogen atom(s)； Y is a hydrogen or halogen atom, or a cyano, a (C1-C3)alkyl or (C1-C3)alkoxy group； R is a hydrogen or halogen atom, a cyano group, or a (C1-C6)alkyl, (C2-C6)alkenyl group, (C2-C6)alkynyl, (C1-C6)alkoxy, (C2-C6)alkenyloxy, (C2-C6)alkynyloxy, (C1-C6)alkylthio, (C1-C6)alkylsulfinyl or (C1-C6)alkylsulfonyl group which may be substituted with a halogen atom(s), a (C1-C6)alkoxycarbonyl group, a (C1-C6)alkoxyimino(C1-C3)alkyl group, a tri(C1-C10)alkylsilyl group, or a phenyl, phenoxy, pyridyloxy or pyrimidyloxy group which may be substituted with a substituent(s)； n is an integer of 1 to 5], which compounds cause reduced loads of deleterious, harmful effects to the earth environment, and exhibit a widened controlling spectrum at lowered chemical application rates, thereby finding useful application as a plant disease controlling agent for agricultural and horticultural uses.本發明提供以下通式(I)表示之化合物：；(I)；[其中X為鹵素原子或可經一個或多個鹵素原子取代之(C1－C3)烷基；Y為氫或鹵素原子、或氰基、(C1－C3)烷基或(C1－C3)烷氧基；R為氫或鹵素原子、氰基、或可經一個或多個鹵素原子取代之(C1－C6)烷基、(C2－C6)烯基、(C2－C6)炔基、(C1－C6)烷氧基、(C2－C6)烯氧基、(C2－C6)炔氧基、(C1－C6)烷硫基，(C1－C6)烷亞磺醯基或(C1－C6)烷磺醯基、(C1－C6)烷氧羰基、(C1－C6)烷氧亞胺基(C1－C3)烷基、三(C1－C10)炔矽基或可經一個或多個取代基取代之苯基、苯氧基、吡啶氧基或嘧啶氧基；n為1至5之整數]，其化合物引起對地球環境造成有毒與有害效果之降低，且對降低之利用率具有廣譜病害防治，因此作為農業及園藝用途具有適用性之植物病害防治劑。
