Which of the droplet sizes is most prone to drift?

The 200-micron droplet size is most prone to drift due to its small size. When droplets are smaller, they have a higher surface area relative to their volume, which makes them more susceptible to being affected by environmental factors such as wind and temperature changes. These smaller droplets can remain airborne longer and can be carried off-target by air currents, increasing the likelihood of drift.

In contrast, larger droplets, like those that are 800, 500, or 400 microns, are heavier and tend to fall to the ground more quickly. This makes them less likely to be affected by wind and other atmospheric conditions that can lead to drift. Therefore, understanding the relationship between droplet size and drift potential is crucial for effective aerial application and minimizing unintended pesticide exposure to non-target areas.