Which factor does not influence pesticide drift?

Pesticide drift refers to the movement of pesticide particles away from the intended target area, often influenced by various environmental and operational factors. Among the given options, pollution does not directly influence pesticide drift.

Wind speed is a significant factor because higher winds can carry pesticide droplets over longer distances, increasing the potential for drift. Temperature affects the volatility of certain chemicals; warmer temperatures can lead to faster evaporation and potentially allow pesticides to drift more. The method of application also plays a crucial role, as different techniques (like aerial spraying versus ground-based application) can alter how far and where pesticides travel once released into the air.

Pollution, while it may impact the environment in various ways, does not have a direct causative effect on how pesticides drift or spread after application. Thus, it does not serve as a relevant factor in the context of pesticide drift specifically.