Device and method for detecting the presence and amount of plants in an area and controlling an agricultural implement to minimize the use of spraying liquid

摘要

The method involves determining the distance between the ultrasonic sensors and the surface of the ground vegetation in a cyclic manner and adjusting the height of the spraying rods when the distance between the ultrasonic sensors and the ground surface deviates from a preset value (102). The biomass is determined in a cyclic manner by producing a biomass value, which is a measurement for the actual biomass on the area probed by ultrasonic sensors. An independent claim is included for a device for determining the biomass of ground vegetation and the height control of spraying rods, particularly on an agricultural machine, particularly for executing the method.