PROBLEM TO BE SOLVED: To provide a composition exhibiting excellent controlling effect on pests.SOLUTION: A pest control composition containing a pyridazine compound represented by the formula (I) and one or more component selected from groups A-E exhibits excellent controlling effect on pests. In the formula (I), 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. The group A is antimicrobial agents, group B is insecticides and acaricides, group C is herbicides, group D is phytotoxicity-reducing agents, and group E is plant growth regulators.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E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【選択図】なし
