Fuente: Wipo "precision agriculture" PEAT SOIL OIL PALM UNDERGROUND WATER LEVEL SENSOR SYSTEM ABSTRACT The present invention relates to a peat soil oil palm underground water level sensor system comprising: a hollow body (100); a solar panel (200) configured to convert solar energy to electrical energy; a battery unit (300) configured to store the electrical energy and power components of the underground water level sensor; an antenna unit (400) configured to transmit sensor data; characterised in that a sonar-sensor (700) is fixed to the battery unit (300) to probe the underground water level by way of emitting sonar, the water level reading data is then captured periodically by the sensor (700) before being transmitted to a nearby base station (1000) by the antenna unit (400), wherein the base station (1000) is configured to transmit the data to cloud storage (6000) via mobile network communication (7000) and telecommunication tower (2000) and the data could be accessed using users mobile devices (8000) through the users dashboard. Most illustrative figure is FIGURE 1