Which of the following factors is NOT one of the three key factors affecting pesticide drift?

The factor that does not contribute to pesticide drift is the attitude of the applicator. Pesticide drift primarily involves environmental and technical elements that influence how and where pesticides may move away from the targeted application area.

Weather conditions, such as wind speed and direction, play a significant role in determining how far and in what direction sprayed pesticides can drift. Temperature inversions, which are atmospheric conditions that trap cooler air beneath warmer air, can exacerbate drift by allowing pesticides to remain suspended in the air for longer periods.

Additionally, equipment configuration and operation, including the type of sprayer used, nozzle size, and application techniques, directly impact the droplet size and distribution of the pesticide, influencing the likelihood of drift. Each of these factors relates to how effectively and accurately pesticides can be applied to intended areas without unintended dispersal. The applicator's attitude, however, is subjective and does not have a direct, measurable impact on the physical processes involved in pesticide application and weather conditions.