How does humidity affect aerial pesticide application?

Higher humidity has a significant impact on the behavior of pesticide droplets during aerial application. When humidity levels are elevated, the air is more saturated with moisture, which can lead to the formation of larger droplets. These larger droplets tend to settle more quickly, reducing the likelihood of drift. Drift occurs when droplets are carried off target by the wind, which can lead to unintended pesticide exposure to non-target areas. Therefore, increased droplet size, facilitated by higher humidity, helps ensure that more of the pesticide reaches the intended target area rather than being lost to the atmosphere.

This understanding is crucial for aerial applicators, as optimal application conditions help ensure both efficacy and safety in pesticide use.