The effectiveness of an application is most significantly impacted by:

The effectiveness of an aerial application is most significantly influenced by weather conditions. Weather plays a crucial role in determining how pesticides are dispersed, how far they travel, and how well they adhere to target surfaces. Factors such as wind speed and direction can lead to drift, which is when pesticides are carried away from the intended target area, affecting both efficacy and safety. Temperature and humidity also affect the evaporation rate of the pesticide and its performance; for example, extremely high temperatures can cause rapid evaporation, reducing the amount that reaches the target pests or crops.

In contrast, while the speed of the aircraft can influence the distribution pattern and droplet size, it does not have the same overarching impact on the success of the application as weather conditions do. The type of pesticide employed certainly matters for specific pest control, but it will not be as effective if the application method is compromised by adverse weather. Field size can introduce logistical challenges in terms of coverage but does not directly affect the intrinsic properties of the application like weather does. Thus, understanding and considering weather conditions are essential for optimizing aerial pesticide applications.