Institut für Anwendungstechnik im Pflanzenschutz
The conventional flat fan nozzle on the field sprayer boom with a nozzle-to-nozzle spacing of 50 cm and target area spacing of 50 cm is currently still the standard. In an increasing number of newer field sprayers, the nozzle-to-nozzle distance has been reduced to 25 cm and thus also the target area distance. In the previous project (1122), a method was found to be able to classify these nozzles in the wind tunnel according to the drift potential in accordance with RiLi 7-1.8. Previously, complex field measurements were required for this.Asymmetric nozzles in arable farming and nozzles for vertical crops cannot be assessed for drift reduction on the basis of their results from the wind tunnel (DIX value = drift potential). Furthermore, the development of nozzles is progressing in order to achieve the best possible drift reduction while maintaining the uniformity of the lateral distribution. Some of the constellations currently also have to be measured in the field for their drift-reducing properties. In addition, there are completely new nozzle designs, such as rotary atomizers. Methods are to be developed with which the drift reduction for these device components can be determined in the wind tunnel.
Federal Ministry of Food and Agriculture
