What is drift and how can it be minimized?

• A. Drift is the movement of pesticide droplets away from the target; minimize by using proper nozzle size, appropriate droplet size, wind speed, spray pressure, and drift-reducing techniques
• B. Drift is soil movement after rain; minimize by tilling before application
• C. Drift is pesticide movement from field to neighbor's property; minimize by applying at night
• D. Drift is a hypothetical concept with no practical effect; minimize by ignoring label

Answer: (A)

Drift is the movement of pesticide droplets through the air away from the target area, caused by wind and other environmental factors. The key to reducing drift is controlling how the liquid is formed and carried by the air: smaller droplets are easily blown off target, while larger droplets tend to stay where you aim at. So using the right nozzle size and aiming for an appropriate droplet size is crucial. Sprayer pressure and the overall spray setup also influence droplet size, so adjusting these to produce the desired droplet spectrum helps minimize off-target movement. Taking into account wind speed and weather conditions is essential too—spraying when conditions are too windy or unstable increases drift risk, so selecting a time with calmer air is safer. Drift-reducing techniques, such as specialized nozzles and approved additives, provide additional control beyond basic nozzle and pressure choices.

Other ideas listed don’t describe drift correctly. Drift isn’t about soil movement after rain, and while nighttime application has different considerations, it isn’t a reliable method for minimizing drift and can introduce other risks. Ignoring label directions is unsafe and doesn’t address the way drift works.