Driftable fines are droplets in which size range?

Driftable fines are defined as droplets that fall within the size range of 50-200 microns. These small droplets are particularly significant in aerial applicator practices because they are more susceptible to being carried away by wind, which can result in unintended pesticide drift. Understanding the size range of driftable fines helps applicators manage spray application effectively, minimize off-target drift, and adhere to regulations intended to protect the environment and non-target species.

Droplets that are smaller than 50 microns can drift excessively, while those larger than 200 microns are less prone to drift but may lead to other application issues, such as poor coverage. Hence, identifying the correct size range for driftable fines is crucial for ensuring responsible and effective aerial pesticide application.