PROBLEM TO BE SOLVED: To provide a novel agricultural chemical, especially a herbicide, having effects on various weeds at low dose, reducing problems such as soil pollution, crop effect or the like and high in safety.SOLUTION: There are provided a salt of heterocycle amide compound represented by the formula (1) and a herbicide containing the same. (1), where W represents a triazolopyridine group substituted/unsubstituted by C1 to C6 alkyl or the like, Q represents an oxadiazole group substituted/unsubstituted by C1 to C6 alkyl or the like, a tetrazole group, a triazole group or an oxazole group, X is O or S and M+ is a metal ion or the like.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】低薬量で各種雑草に対して効果を有し、土壌汚染や作物の影響等の問題の軽減された、安全性の高い新規な農薬、特に除草剤の提供。【解決手段】式(1)で示される複素環アミド化合物の塩、及びそれらを含有する除草剤。[WはC1~C6アルキル等で置換/非置換のトリアゾロピリジン基;QはC1~C6アルキル等で置換/非置換のオキサジアゾール基、テトラゾール基、トリアゾール基、又はオキサゾール基を表し、;XはO又はS;M+は金属イオン等]【選択図】なし