PROBLEM TO BE SOLVED: To provide a new pesticide, especially a herbicide. SOLUTION: Formula (1): [In the formula, G represents tetrame acid and the like, Z4 represents C1-C6 alkoxy and the like, and Q represents a specific group such as a pyridine ring and a benzene ring. ] The substituted tetramic acid compound represented by these, or its salt. [Selection diagram] None【課題】新規な農薬、特に除草剤を提供する。【解決手段】式（１）：［式中、Ｇは、テトラム酸など、Ｚ４はＣ１～Ｃ６アルコキシ等を表し、Ｑはピリジン環、ベンゼン環など特定の基を表す。］で表される置換テトラム酸化合物若しくはその塩。【選択図】なし
