Electrostatic sprayers can be an option for increasing the effectiveness of treatments and reducing pesticide consumption, but it still requires more verifications, especially in orchards. The spray deposition performances of three different electrostatic sprayers design were compared for apple tree pesticide application, all of them used with the electrostatic system activated and disactivated, as conventional spray application. Despite designs of particular type sprayers were unique, no significant differences were observed in the normalized deposition and droplets density between the conventional and electrostatic spray methods of the same sprayer, but differences were found between the vertical boom and the pneumatic sprayer in terms of coverage. The normalized deposition values of the three sprayers were very similar, ranging between 1.0 and 1.5 μg cm⁻². However, the vertical boom sprayer produced the highest spray coverage, followed by the multi-fan sprayer. In general, the measured values of coverage and deposit obtained were in the three cases similar, independently on the use or not of the electrostatic device, being the sprayer type more affecting parameter rather than the electrostatic charging system. Differences in spray deposition qualities on apple trees were observed among three types of sprayers, but were not for the same sprayer with and without activation of the electrostatic charging system. Appropriate design of orchard sprayers according to the canopy structure seems to be more effective rather than the implementation of electrostatic spray charge system to achieve the European challenge of 50% reduction of pesticides by 2030.

静电喷雾器可以作为提高处理效果和减少农药消耗的一种选择，但它仍然需要更多的验证，尤其是在果园中。比较了三种不同静电喷雾器设计的喷雾沉积性能，用于苹果树杀虫剂施用，所有静电喷雾器都使用激活和停用的静电系统，作为常规喷雾施用。尽管特定类型喷雾器的设计是独特的，但在同一喷雾器的常规喷雾方法和静电喷雾方法之间没有观察到归一化沉积和液滴密度的显着差异，但垂直喷杆和气动喷雾器在覆盖范围方面存在差异。三种喷雾器的归一化沉积值非常相似，介于 1.^-2。然而，垂直喷杆喷雾器的喷雾覆盖率最高，其次是多扇喷雾器。一般来说，覆盖率和沉积物的测量值在三种情况下是相似的，独立于是否使用静电装置，喷雾器类型比静电充电系统更影响参数。在三种类型的喷雾器中观察到苹果树喷雾沉积质量的差异，但对于启用和未激活静电充电系统的同一喷雾器则不同。根据树冠结构适当设计果园喷雾器似乎比实施静电喷雾充电系统更有效地实现到 2030 年农药减少 50% 的欧洲挑战。