An amidine compound represented by formula (1)wherein R1, R2, R3, R4 and R5 are the same or different and represent a C1 to C5 alkyl group optionally having one or more halogen atoms or the like； R6 and R7 are a hydrogen atom or the like； R8 and R9 are the same or different and represent a C1 to C3 alkyl group optionally having one or more halogen atoms or the like； and R10 and R11 are the same or different and represent a C1 to C6 alkyl group optionally having one or more halogen atoms or the like,has an excellent control effect on plant diseases.
