PROBLEM TO BE SOLVED: To provide a composition showing excellent pest controlling effect.SOLUTION: A pest control composition comprises a pyridazine compound represented by formula (I), and one or more kinds of components selected from group A to group F, the composition showing excellent pest controlling effect, wherein R1 is a chlorine atom, a bromine atom, a cyano group or a methyl group, R2 is a hydrogen atom or a fluorine atom, and group A is sterilization agent, group B is insecticide or miticide, group C is herbicide, group D is phytotoxicity reducing agent, group E is plant growth regulator, and group F is microorganism material.COPYRIGHT: (C)2015,JPO&INPIT【課題】有害生物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)で示されるピリダジン化合物と、群A乃至群Fより選ばれる1種以上の成分とを含有する有害生物防除組成物は、有害生物に対する優れた防除効果を示す。〔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。〕群A;殺菌剤、群B;殺虫剤、殺ダニ剤、群C;除草剤、群D;薬害軽減剤、群E;植物成長調整剤、群F;微生物資材【選択図】なし
