What is essential for reducing off-target movement of pesticide?

• A. Increasing spray rate.
• B. Painting the aircraft.
• C. Reducing nozzle types.
• D. Determining the best direction for application.

Answer: (C)

Controlling where droplets go starts with how the spray is formed. The nozzle type largely determines droplet size and the spray pattern. If you use many different nozzle types, you end up with a mix of droplet sizes and spray behaviors, which makes deposition unpredictable and increases the chance of droplets moving off target with air currents. By using a single, appropriate nozzle type, you standardize the spray characteristics, often selecting a configuration that produces larger, less drift-prone droplets and a consistent spray pattern. This consistency helps keep more of the pesticide on the target and reduces off-target movement. While other practices like directing the spray properly or adjusting rate matter, the most direct way this item emphasizes to minimize drift is to limit variability in nozzle performance by reducing nozzle types.