To provide the azole derivative that is included as an active ingredient in agricultural and horticultural agents with excellent control effect against [challenge] disease. Azole derivative according to the present invention comprises, as represented by the following general formula (I). (In the formula (I), R 2 and R 1 are the same or different, also. C1~C4 represents an alkyl group substituted in the cycloalkyl group or cycloalkyl group C3~C6,, A is a nitrogen atom or . representing the methine group) None [Selection Figure]【課題】病害に対する防除効果に優れた農園芸用薬剤に有効成分として含まれるアゾール誘導体を提供する。【解決手段】本発明に係るアゾール誘導体は、下記一般式(I)で示される。(式(I)中、R1及びR2は同一又は異なり、C3~C6シクロアルキル基、又は当該シクロアルキル基で置換されているC1~C4アルキル基を表す。また、Aは、窒素原子又はメチン基を表す。)【選択図】なし