The present invention has an excellent plant disease control effect, a compound represented by the following formula (1), a compound represented by the following formula (2) and the following formula (3) [in the formula, R1, R2, R3 and R4 In the combination, R1 is a methyl group, R2 is a trifluoromethyl group, R3 and R4 are both fluorine atoms, or R1 and R2 are both difluoromethyl groups, and R3 is a chlorine atom. And R 4 represents a methanesulfonyloxy group. And an effective amount of the compound represented by the formula (1), the compound represented by the formula (2) and the compound represented by the formula (3) Provided is a method for controlling plant diseases, which comprises a step of applying to soil for cultivating plants.本発明は、優れた植物病害防除効果を有する、下記式(1)で示される化合物、下記式(2)で示される化合物及び下記式(3)〔式中、R1、R2、R3及びR4の組合せは、R1がメチル基であり、R2がトリフルオロメチル基であり、R3及びR4がいずれもフッ素原子である組合せ、又は、R1及びR2がいずれもジフルオロメチル基であり、R3が塩素原子であり、R4がメタンスルホニルオキシ基である組合せを表す。〕で示される化合物を含有する植物病害防除組成物並びに前記式(1)で示される化合物、前記式(2)で示される化合物及び前記式(3)で示される化合物の有効量を、植物又は植物を栽培する土壌に施用する工程を含む植物病害防除方法を提供する。