What license is needed for a farmer applying fertilizers and pesticides through an irrigation system?

To apply fertilizers and pesticides through an irrigation system, a farmer must possess a Private Applicator License with a Chemigation category. This specific licensing is essential because chemigation involves the application of agricultural chemicals through irrigation systems, integrating the management of agricultural inputs with irrigation practices.

The Private Applicator License indicates that the individual using pesticides is doing so for their own agricultural production on their own property, allowing them to apply restricted-use pesticides. The Chemigation category within this license further indicates that they have additional training and understanding of how to safely integrate chemical applications with irrigation methods, ensuring compliance with safety and environmental regulations.

This designation ensures that the applicator is knowledgeable about the techniques, equipment, potential risks, and regulatory requirements associated with chemigation, which can pose unique challenges compared to traditional pesticide application methods. Thus, the correct answer specifically addresses the unique qualifications necessary for the safe and effective application of chemicals through irrigation systems.