Which action lowers drift potential when applying with a boom sprayer?

Which action lowers drift potential when applying with a boom sprayer?

• A. Increase the pressure
• B. Choose nozzles with smaller droplet size
• C. Slow the tractor down and reduce pressure
• D. Start spraying when winds are strong

Answer: (C)

Drift potential with a boom sprayer mainly comes down to how big the droplets are and how long they stay in the air after they leave the nozzle. Larger droplets fall to the ground more quickly and are less likely to be carried off target, while finer droplets can stay airborne longer and are more easily moved by wind. Slowing the tractor and reducing pressure work together to create coarser droplets and give them less time in the air, which reduces the chance they drift away from the target. In practice, lower pressure produces larger droplets, and slower ground speed reduces the spray’s exposure to wind and off-target movement. Conversely, increasing pressure makes smaller droplets that are more prone to drift, using nozzles that generate finer droplets increases drift even more, and spraying when winds are strong greatly elevates drift risk.

Drift potential with a boom sprayer mainly comes down to how big the droplets are and how long they stay in the air after they leave the nozzle. Larger droplets fall to the ground more quickly and are less likely to be carried off target, while finer droplets can stay airborne longer and are more easily moved by wind. Slowing the tractor and reducing pressure work together to create coarser droplets and give them less time in the air, which reduces the chance they drift away from the target. In practice, lower pressure produces larger droplets, and slower ground speed reduces the spray’s exposure to wind and off-target movement. Conversely, increasing pressure makes smaller droplets that are more prone to drift, using nozzles that generate finer droplets increases drift even more, and spraying when winds are strong greatly elevates drift risk.