Droplet deposition of unmanned aerial vehicles spray and traditional constant application in wheat canopy
[Objective]At present,only a few special formulations for unmanned aerial vehicle(UAV)application are available in China.Conventional formulations are widely used in UAV,which limits its promotion and application.It is important to screen conventional formulations to increase the dispersion of the pesticides and improve the control efficacy,which will finally be beneficial to UAV application.[Method]In this study,three common pesticide formulations were selected,and the deposition patterns of droplets in the wheat canopy were evaluated by comparing the constant spray with UAV.[Result]The results showed that under the same spray conditions,emulsion in water had the best dispersibility,followed by water dispersible granules and aqueous suspension.[Conclusion]Compared with the constant application,UAV application had better dispersibility and penetration.In addition,UAV application was a water saving method.