Junyutai Hu

1. Introduction Uniform droplet deposition within the crop canopy is fundamental for precision application, significantly influencing the quality of pesticide application [1]. Accumulation of droplets, hindered by the dense outer leaf canopy, often results in runoff losses, compromising effective pest and disease control within the canopy and on the trunk [2]. Overcoming environmental barriers to ensure effective droplet penetration across the canopy is critical for achieving uniform deposition.