Which drift-reduction measures are appropriate on a windy day?

• A. Increase droplet size dramatically only
• B. Use drift-reducing nozzles, lower boom height, and proper nozzle selection
• C. Spray during high wind
• D. Ignore wind conditions

Answer: (B)

On a windy day, the main challenge is spray drift: fine droplets can be carried off-target by air currents before they deposit. The best approach combines several drift-reduction practices. Drift-reducing nozzles help by producing larger, heavier droplets and a more controlled spray pattern, which are less prone to being drifted away. Lowering the boom height reduces the time droplets spend in the air and keeps the spray closer to the target, further limiting off-target movement. Choosing the right nozzle type and spray characteristics ensures you get the needed coverage while minimizing drift. Using these measures together is more effective than any single change.

Spraying in high wind makes drift much worse, so that isn’t appropriate. Ignoring wind conditions ignores the primary factor driving drift. Simply increasing droplet size dramatically on its own may reduce drift somewhat but can compromise coverage and is not as reliable as combining drift-reducing nozzles, appropriate height, and proper nozzle selection.