Pyrazoline derivatives for controlling plant diseases.

摘要

A plant disease-controlling agent containing as an effective ingredient a pyrazoline derivative represented by the general formula wherein, R<1> to R<4> denote hydrogen atoms, etc., R<5> denotes a hydrogen atom, etc., R<6> and R<7> are the same or different and denote optionally substituted hydrocarbon groups, and R<8> and R<9> are the same or different and denote hydrogen atoms, etc., provided that not all of R<1> to R<5> denote hydrogen atoms at the same time. The pyrazoline derivatives represented by the above general formula exhibit excellent control effects on plant diseases.