Illinois Field Crop Applicators Practice Test

Droplets below what size in microns are at risk of drift?

1. 250

2. 100

3. 500

4. 200

The correct answer is: 100

Droplets smaller than 100 microns are particularly at risk of drift during application. This is due to their small size, which makes them more susceptible to environmental factors such as wind and air turbulence. When droplets are smaller, they can remain airborne for longer periods and travel greater distances away from the intended target area. Understanding this size threshold is crucial for applicators as it helps them select appropriate nozzles and application techniques that minimize drift risk, ensuring that pesticides or fertilizers are applied effectively and responsibly. Larger droplets tend to settle more quickly and are less likely to be carried away by wind, making the management of smaller droplet sizes essential for effective crop protection.