PROBLEM TO BE SOLVED: To provide a composition exhibiting excellent controlling effect on plant diseases.SOLUTION: The plant disease control composition contains a pyridazine compound represented by formula (I) (wherein R1 represents a chlorine atom, a bromine atom, a cyano group, or a methyl group, and R2 represents a hydrogen atom or a fluorine atom) and abamectin. In the plant disease control composition, a weight ratio of the pyridazine compound to abamectin, pyridazine compound/abamectin, is more preferably 1/1 to 1/100.COPYRIGHT: (C)2013,JPO&INPIT【課題】植物病害に対する優れた防除効果を示す組成物を提供すること。【解決手段】式(I)〔式中、R1は塩素原子、臭素原子、シアノ基又はメチル基を表し、R2は水素原子又はフッ素原子を表す。〕で示されるピリダジン化合物と、アバメクチンとを含有する植物病害防除組成物。より好ましくは、該ピリダジン化合物とアバメクチンとの重量比が、該ピリダジン化合物/アバメクチン=1/1~1/100である植物病害防除組成物。【選択図】なし
