What condition is necessary before making aerial pesticide applications?

Having a valid flying license is essential before making aerial pesticide applications because it ensures that the pilot is qualified to operate the aircraft safely and effectively during the application process. Aerial applications often involve flying at low altitudes and precise maneuvering, which require specific skills and knowledge that are obtained through flight training and certification. The pilot must understand flight rules, navigation, and safety protocols to minimize risks to both the environment and human health while applying pesticides.

While other options may relate to elements of the broader context of pesticide application, such as sales or environmental awareness, they are not prerequisites for the specific act of conducting aerial pesticide applications. Only a valid flying license confirms that the pilot has met the necessary aviation regulations and standards required for this type of work.