Fecha de publicación: 09/05/2022 Fuente: Wipo "precision agriculture" The present invention relates to a method for controlling a liquid agent spray device including a liquid agent spray pump for spraying a liquid stored in a chemical container through a spray nozzle by a normal pressure difference, and a control unit for providing a control signal to the liquid agent spray pump according to a spray amount input through a user interface unit or a spray amount that is automatically set. In addition, the present invention provides a method for controlling a liquid agent spray device for precision agriculture, wherein the liquid agent spray device further includes a pulse signal generation unit for generating a pulse signal within a predetermined frequency band and providing the pulse signal to the liquid agent spray pump, and the control unit provides the pulse signal generated through the pulse signal generation unit to the liquid agent spray pump as a control signal for adjusting a liquid agent spray amount of the liquid agent spray pump. Accordingly, waste of a liquid agent is reduced. COPYRIGHT KIPO 2023