Which practice helps minimize drift when applying pesticides?

Which practice helps minimize drift when applying pesticides?

• A. Use smaller droplets by selecting a smaller nozzle
• B. Apply during high wind conditions
• C. Increase nozzle size to produce larger droplets
• D. Spray only during the hottest part of the day

Answer: (C)

Drift is off-target movement of spray droplets caused by air currents. Droplet size is a key factor: finer droplets are lighter and stay airborne longer, so they can be carried by even light winds and travel far from the target. Larger droplets, being heavier, tend to settle out of the air more quickly, reducing how far they drift. Increasing nozzle size to produce larger droplets directly lowers drift potential by producing heavier droplets that deposit closer to the target. In contrast, using smaller droplets increases drift, applying in windy conditions raises drift risk, and spraying during the hottest part of the day can worsen deposition patterns and drift tendencies. So choosing a larger nozzle to produce larger droplets is the best way among the options to minimize drift.

Drift is off-target movement of spray droplets caused by air currents. Droplet size is a key factor: finer droplets are lighter and stay airborne longer, so they can be carried by even light winds and travel far from the target. Larger droplets, being heavier, tend to settle out of the air more quickly, reducing how far they drift. Increasing nozzle size to produce larger droplets directly lowers drift potential by producing heavier droplets that deposit closer to the target.

In contrast, using smaller droplets increases drift, applying in windy conditions raises drift risk, and spraying during the hottest part of the day can worsen deposition patterns and drift tendencies. So choosing a larger nozzle to produce larger droplets is the best way among the options to minimize drift.