Which factor does NOT contribute to spray drift?

Spray drift is the phenomenon where pesticide particles are carried away from the target area by wind or other environmental factors. The factors that contribute to spray drift include wind speed, application height, and droplet size.

Wind speed directly affects how far and fast spray particles can travel away from their intended target. Higher wind speeds can increase the likelihood of drift as small particles can be carried away more easily.

Application height is also a significant contributor. If the applicator sprays pesticides from a higher vantage point, the distance that the spray must travel increases, which can allow more time and opportunity for particles to be moved by the wind.

Droplet size plays a critical role as well. Smaller droplets are more prone to drift because they are less affected by gravitational pull and can be carried further by air currents. In contrast, larger droplets tend to fall more quickly to the ground, reducing the potential for drift.

In contrast, the chemical color does not have a direct impact on the mechanics of how droplets behave in the air or their movement outside the targeted application area. While color may affect visibility or heat absorption, it does not influence the physical properties or environmental interactions that contribute to spray drift. This is why it is identified as the factor that does not contribute to