What is the relationship between wind speed and drift risk?

What is the relationship between wind speed and drift risk?

• A. Higher wind decreases drift risk
• B. Wind speed has no effect on drift
• C. Higher wind increases drift risk
• D. Lower wind increases drift risk

Answer: (C)

Wind speed directly influences how far pesticide droplets travel after they leave the nozzle. The faster the wind, the more air carries droplets away from the target, increasing the likelihood of off-target deposition. Smaller droplets are especially vulnerable because they stay airborne longer and ride the breeze more easily. In practice, this means spraying in calm, light-wind conditions reduces drift risk, while higher winds raise it; drift-reduction strategies (larger droplets, lower pressure, drift-control nozzles) are used to counteract this when spraying is necessary.

Wind speed directly influences how far pesticide droplets travel after they leave the nozzle. The faster the wind, the more air carries droplets away from the target, increasing the likelihood of off-target deposition. Smaller droplets are especially vulnerable because they stay airborne longer and ride the breeze more easily. In practice, this means spraying in calm, light-wind conditions reduces drift risk, while higher winds raise it; drift-reduction strategies (larger droplets, lower pressure, drift-control nozzles) are used to counteract this when spraying is necessary.