PROBLEM TO BE SOLVED: To provide a novel bactericide, particularly a bactericide for agricultural and horticultural use.SOLUTION: The present invention provides a hydrazone derivative represented by formula (I) [where W is an oxygen atom and the like, A is an oxygen atom and the like, R1 is C1-C6 alkyl, C1-C6 alkoxy and the like, R2 is a hydrogen atom, C1-C6 alkyl and the like, R3 is a hydrogen atom, C1-C6 alkyl and the like, R4 and R5 independently represent a hydrogen atom and the like, R6, R7, R8 and R9 independently represent a hydrogen atom, a halogen atom and the like, R10 is C1-C6 alkyl and the like] or a salt thereof, and a bactericide for agricultural and horticultural use containing them.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】 新規な殺菌剤、特に農園芸用殺菌剤を提供する。【解決手段】 式(I):【化1】[式中、Wは、酸素原子等を表し、Aは、酸素原子等を表し、R1は、C1~C6アルキル、C1~C6アルコキシ等を表し、R2は、水素原子、C1~C6アルキル等を表し、R3は、水素原子、C1~C6アルキル等を表し、R4及びR5は、互いに独立して水素原子等を表し、R6、R7、R8及びR9は、互いに独立して水素原子、ハロゲン原子等を表し、R10は、C1~C6アルキル等を表す。]で表されるヒドラゾン誘導体又はその塩、及びそれらを含有する農園芸用殺菌剤。【選択図】 なし
