For drift reduction, which practice is most effective?

• A. Use larger droplets
• B. Increase nozzle pressure
• C. Spray during windy conditions
• D. Increase spray volume

Answer: (A)

Droplet size is the key factor in drift control. Larger droplets are heavier and settle out of the air more quickly, so they’re less likely to be carried away by wind or air currents. This means a larger-droplet spray stays on or near the target more effectively, making it the most reliable single practice for reducing drift.

Spraying in windy conditions increases drift because moving air can carry fine droplets far off target. Increasing nozzle pressure typically produces smaller droplets, which stay suspended longer and drift farther. Increasing spray volume doesn’t reliably reduce drift and can still lead to off-target deposition, depending on droplet size and weather conditions.