What is the primary function of a spray gun in pesticide application?

The primary function of a spray gun in pesticide application is to act as a handheld device for regulating liquid application. Spray guns are designed to deliver pesticides in a controlled manner, allowing for precise application to target areas. This helps ensure that the right amount of pesticide is used, minimizing waste and reducing the risk of environmental contamination. The design of spray guns allows for adjustments in spray patterns, droplet size, and flow rate, which are crucial for effective pest control and the safety of non-target organisms.

In contrast, the other choices refer to functions unrelated to the primary role of a spray gun. Measuring soil pH levels and mixing chemicals are tasks performed using different tools and equipment. Storing pesticides safely is also not a function of a spray gun; it requires proper containers and storage facilities that adhere to safety regulations. Thus, the correct understanding focuses on the spray gun's role in facilitating the application of pesticides.