What type of support equipment can be used to aid in pesticide application?

When considering the types of support equipment used to aid in pesticide application, a filler pump is essential because it facilitates the transfer of pesticide mixtures from larger containers or mixing tanks into smaller application equipment. This helps ensure efficient and precise filling while minimizing spills and waste, thereby enhancing the safety and effectiveness of the pesticide application process.

Using a filler pump is integral for maintaining the appropriate concentration of the pesticide solutions, which is crucial for both efficacy and compliance with safety regulations. While other options, such as a mixing tank, backpack sprayer, and hose reel, are important components in the overall pesticide application process, they serve different functions—mixing, applying, and storing hoses—rather than specifically assisting in the transfer of the pesticide for application. The filler pump's role in managing the logistics of preparing pesticide solutions makes it a critical piece of support equipment.