PROBLEM TO BE SOLVED: To solve such a problem that if a composition for controlling aqueous suspension-like pest containing, as an active ingredient, an agricultural chemical compound having a high aqueous solubility, particularly an agricultural chemical compound having an aqueous solubility exceeding 500 mg/L at 20°C, is stored for a long period of time, the agricultural chemical active ingredient particles tend to grow and become coarse during storage, whereby a stabilized suspension is hardly obtainable.SOLUTION: The composition for controlling aqueous suspension-like pest is provided containing (a) an agricultural chemical compound or its salt having an aqueous solubility of 500-6,000 mg/L at 20°C, (b) a polycarboxylate type surfactant, (c) a sulfonate type surfactant, and (d) water.【課題】 水溶解度が高い農薬化合物、特に２０℃における水溶解度が５００ mg/Lを超える農薬化合物を有効成分とする水性懸濁状有害生物防除用組成物を長期間保管すると、農薬有効成分粒子が保存中に成長・粗大化し、安定した組成物が得られないという課題があった。【解決手段】 (a)２０℃における水溶解度が５００mg/L～６０００mg/Lの農薬化合物又はその塩、(b)ポリカルボン酸型界面活性剤、(c)スルホン酸型界面活性剤及び(d)水を含有する水性懸濁状有害生物防除用組成物を提供する。【選択図】 なし
