PROBLEM TO BE SOLVED: To provide a method for applying a pesticide, capable of reducing the outflow of a pesticide from the surface of an object plant to which the pesticide has been applied even under conditions where it is exposed to water such as a rainfall condition, and further capable of producing agricultural products at a low cost with the application rate of the pesticide reduced.SOLUTION: A method for applying a pesticide includes the following steps (1) to (3): a step (1) of coating an objective plant with a chemical (A) including a pesticide (a1), a surfactant (a2) and water (a3) a step (2) of drying the chemical (A) coating the objective plant to form a pesticide-including dried film layer (B) derived from the chemical (A) on the surface of the objective plant and a step (3) of further coating the pesticide-including dried film layer (B) with a water repellent (C) to form a water-repellent layer (D).COPYRIGHT: (C)2014,JPO&INPIT【課題】降雨条件など水に曝される条件下であっても、農薬が施用された対象植物の表面からの農薬の流出を低減することができ、更には、農薬の施用量を低減して低コストで農産物を生産できる、農薬の施用方法を提供すること。【解決手段】下記工程(1)~(3)を含む、農薬の施用方法。対象植物を、農薬(a1)、界面活性剤(a2)および水(a3)を含む薬液(A)で被覆する工程(1)、対象植物を被覆する薬液(A)を乾燥させて、対象植物表面に薬液(A)に由来する農薬含有乾燥被膜層(B)を形成する工程(2)、前記農薬含有乾燥被膜層(B)を、更に撥水剤(C)で被覆して、撥水層(D)を形成する工程(3)。【選択図】なし