PROBLEM TO BE SOLVED: To provide a novel pest control agent, particularly a bactericidal agent and a nematicidal agent.SOLUTION: The present invention provides an alkynyl pyridine substituted amide compound represented by formula (I) or salt thereof, and a pest control agent comprising them [Gis G-1, G-3a, G-27a or the like； Xis a halogen atom, difluoromethyl, trifluoromethyl or the like； Xis H, F； Yis a halogen atom or the like； Yand Yis a hydrogen atom and the like, Ris a specific group].SELECTED DRAWING: None【課題】新規な有害生物防除剤、特に殺菌剤及び殺線虫剤の提供。【解決手段】式（Ｉ）で表されるアルキニルピリジン置換アミド化合物又はその塩、及びそれらを含有する有害生物防除剤。［G１はG１-1、G１-3a、G１-27a等；X１はハロゲン原子、ジフルオロメチル、トリフルオロメチル等；X２はＨ、Ｆ；Y１はハロゲン原子等；Y２及びY３は水素原子等を表し、R１－６は特定の基を表す。］【選択図】なし
