Which practice is NOT a method to reduce spray drift?

Which practice is NOT a method to reduce spray drift?

• A. Using a finer droplet size
• B. Using a coarser droplet size
• C. Applying at proper height
• D. Spraying under appropriate wind conditions

Answer: (A)

Finer droplets drift farther because they have less mass and are more easily carried and dispersed by air currents. They evaporate and travel with gusts, making off-target deposition more likely. Drift reduction relies on making droplets coarser, which are heavier and settle faster, and on applying at proper height and under favorable wind conditions that keep the spray plume from drifting away from the target. So, using a finer droplet size does not reduce drift; it tends to increase it. The other practices—using coarser droplets, applying at an appropriate height, and spraying under suitable wind conditions—are effective ways to minimize drift.

Finer droplets drift farther because they have less mass and are more easily carried and dispersed by air currents. They evaporate and travel with gusts, making off-target deposition more likely. Drift reduction relies on making droplets coarser, which are heavier and settle faster, and on applying at proper height and under favorable wind conditions that keep the spray plume from drifting away from the target. So, using a finer droplet size does not reduce drift; it tends to increase it. The other practices—using coarser droplets, applying at an appropriate height, and spraying under suitable wind conditions—are effective ways to minimize drift.