1. Introduction Pesticides are an essential part of modern agriculture, helping to keep a high crop yield and to address the increasing food demand. Yet, a significant portion of the applied material may escape the target areas via leaching, runoff, and atmospheric transport. The latter occurs during application due to spray droplets drift (i.e., primary drift) as well as after application, due to pesticide evaporation from treated surfaces (i.e., secondary drift) [1].