Which application method uses backpacks typically holding 2-4 gallons?

Backpack sprayers that hold 2-4 gallons are commonly used for applying liquid pesticides in a non-powered manner. This method is practical for small to medium-sized areas, allowing for precise application in various terrains and conditions. Non-powered backpack sprayers rely on manual pumping, enabling the applicator to control the spray pressure and coverage effectively.

These sprayers are particularly beneficial in situations where electric or gas-powered equipment might not be feasible, such as in tight spaces or on uneven ground. The capability to carry a manageable volume of liquid makes it easier for applicators to navigate and gives them the flexibility to apply pesticides on targeted plants or areas without significant waste or over-application.

In contrast, powered applications often involve larger equipment designed for broader coverage or heavier liquid volumes, aerosol sprays are typically used for smaller applications, and solid pesticides are applied using different methods such as granules, which do not involve liquid application methods.