Which factor contributes significantly to off-target pesticide drift during aerial application?

Droplet size plays a crucial role in off-target pesticide drift during aerial application. When pesticides are applied from the air, they are dispersed in droplets with varying sizes. Smaller droplets are more susceptible to being carried away by wind, which increases the potential for drift to unintended areas. These smaller droplets can remain airborne for longer periods and travel greater distances, making it more difficult to control where the pesticide lands.

Conversely, larger droplets tend to fall more quickly to the ground due to their weight, which helps to minimize drift. Therefore, understanding and managing droplet size is essential for aerial applicators to ensure that pesticides reach their intended targets while reducing the risk of environmental contamination and ensuring compliance with regulations and safety practices.