How do weather conditions impact drift potential?

• A. Air movement and high winds can cause droplets to travel
• B. Temperature and humidity have no effect on drift
• C. Drift is only affected by soil moisture
• D. Calm weather always increases drift potential

Answer: (A)

Weather conditions shape drift potential mainly through air movement. When there is movement in the air, especially high winds or gusts, spray droplets can be carried off-target and travel farther. Droplet size matters too: smaller droplets stay aloft longer and are more easily moved by the wind, increasing drift distance. Temperature and humidity also play a role by influencing evaporation: hot, dry air speeds up evaporation, shrinking droplets and making drift more likely; cooler, humid air slows evaporation, keeping droplets larger and reducing drift. Calm weather reduces drift potential because there’s less air to carry droplets away, though drift can still occur if conditions change or spraying happens too close to sensitive areas.