Abstract: A method for dispensing at least one liquid medium with the aid of a spray nozzle unit, in particular for agricultural purposes. The spray nozzle unit includes at least one spray nozzle via which the medium is dispensed, and at least one sensor device via which a biomass, in particular weeds, is/are recognized. With knowledge of the location of the biomass, the at least one spray nozzle is activated in order to dispense the medium onto the biomass.

Abstract: A method for applying a spray agent is described, in particular, a plant protection product, onto an agricultural area to be treated with the aid of a spraying device, including a spray agent tank and at least one fluidic connecting line from the spray agent tank to a nozzle. The method includes the following steps: selectively applying the spray agent onto an initial section of the agricultural area, and subsequently extensively applying a residual amount of spray agent onto a residual section of the agricultural area using a predefined application amount in such a way that, upon completion of the treatment of the agricultural area, essentially the entire residual amount of spray agent has been applied.

Abstract: A fertilizing system for agricultural soils includes an application device for applying fertilizer and including a test device for detecting a nitrous oxide content in or on the agricultural soil to be fertilized. The test device includes multiple nitrous oxide sensors including in each case a first transmission device for transmitting measuring data, and including a data processing device that includes a first receiving device for receiving the measuring data.