To minimize off-target drift, which technique is most effective?

To minimize off-target drift, which technique is most effective?

• A. Use the smallest droplets practical to provide necessary coverage.
• B. Use medium droplets to balance coverage and drift.
• C. Use the largest droplets practical to provide necessary coverage.
• D. Apply only from a higher elevation to reduce drift.

Answer: (C)

Droplet size controls how air moves the spray. Larger droplets are heavier and settle out of the air quickly, so they’re less likely to be carried off target by wind or gusts. Using the largest droplets practical to achieve the required coverage minimizes off-target drift while still delivering the treatment where it’s needed. Smaller droplets stay suspended longer and are more easily moved by air currents, increasing drift. Medium droplets sit between these effects and don’t reduce drift as effectively as the largest practical droplets. Applying from a higher elevation would typically increase drift because droplets originate higher and have more distance to be carried by wind.