Which factor largely determines the distribution of droplets in the field?

Which factor largely determines the distribution of droplets in the field?

• A. Temperature
• B. Air movement
• C. Soil type
• D. Humidity

Answer: (B)

Droplet distribution is largely determined by air movement, or wind. Once the spray leaves the nozzle, the droplets ride along with the moving air, so the speed and direction of the wind push them across the field. Strong or gusty winds can carry droplets well beyond the target area, causing drift and uneven coverage, while calm air lets droplets fall more directly toward the ground where you aim. Temperature and humidity can modify what happens after the droplets are airborne (through evaporation and droplet shrinkage), but they don’t set the overall path of the spray like wind does. Soil type affects what happens after droplets reach the ground (infiltration or runoff), not how they are distributed in the air during application.

Droplet distribution is largely determined by air movement, or wind. Once the spray leaves the nozzle, the droplets ride along with the moving air, so the speed and direction of the wind push them across the field. Strong or gusty winds can carry droplets well beyond the target area, causing drift and uneven coverage, while calm air lets droplets fall more directly toward the ground where you aim. Temperature and humidity can modify what happens after the droplets are airborne (through evaporation and droplet shrinkage), but they don’t set the overall path of the spray like wind does. Soil type affects what happens after droplets reach the ground (infiltration or runoff), not how they are distributed in the air during application.