What type of equipment is commonly used for aerial pesticide applications?

Helicopters and airplanes are the equipment most commonly used for aerial pesticide applications due to their ability to cover large areas quickly and efficiently. These types of aircraft can reach areas that are difficult or impossible to access by ground equipment, making them ideal for treating expansive fields or remote locations. Aerial applicators are specifically designed for this purpose, equipped with specialized nozzles and tanks that allow for precise application of pesticides while minimizing drift and ensuring even coverage.

In contrast, tractors, hand-held sprayers, and surface sprayers are typically used for ground-based applications. Tractors may pull spray tanks but are not suitable for aerial dispersal; hand-held sprayers and surface sprayers are more suited for small, localized areas where precision application is needed rather than wide coverage. Thus, helicopters and airplanes stand out as the most effective means for aerial pesticide delivery.