To minimize drift, which choice is recommended?

• A. Use the finest droplets
• B. Use the coarsest spray that will provide an effective treatment
• C. Spray during windy conditions
• D. Increase spray volume

Answer: (B)

Droplet size drives spray drift. Larger droplets are heavier and settle more quickly, so they are less likely to be carried off-target by wind or air currents. The best approach is to use the coarsest spray that still provides effective treatment, because this minimizes drift while still achieving the needed pest control. The other options increase drift risk or don’t improve target coverage: the finest droplets drift more easily; spraying in windy conditions increases drift; and simply increasing spray volume can raise the amount of off-target deposition without improving drift control.