Pesticide drift is defined as what?

• A. Movement within the treated area
• B. Movement to other areas beyond the intended area
• C. Pesticide residues on crops
• D. Pesticide floating on air currents inside the field

Answer: (B)

Pesticide drift is the off-target movement of a pesticide away from the area being treated, typically carried by air after application. It means the chemical ends up in places beyond where you intended to apply it, which can affect neighboring crops, water, or people and animals downwind.

This differs from movement within the treated area—the spray can spread across the field, but that distribution stays inside the target boundaries, not off-target. It also isn’t simply pesticide residues on crops, which are deposits that remain after application. And if the pesticide is “floating on air currents inside the field,” that’s still within the treated area, not drift to outside the boundaries.

Understanding drift helps explain why factors like droplet size, nozzle type, wind speed, and weather conditions matter, and why adjustments are made to minimize off-target exposure.