Ground sprayer designs for forestry applications
Three herbicide spraying systems were designed, constructed, and field tested in cooperation with the-USDA Forest Service,.Georgia Forestry Commission, and Scott Paper Company. One system was designed to mount on wildland tree planting machines for applying banded treatments for herbaceous weed control. This system consisted of a top mounted 50-gal tank and a small electric pump along with a regulator and strainer. The second spraying system was mounted on a small crawler tractor and was used for spraying low brush and kudzu, A 250 gal space-saver poly-tank, a hydraulicly driven pump and a cluster nozzle were the main components. The third system was skidder-imounted and used a 600 gal mild steel tank, a gasoline powered pump, and 22-tip nozzle manifold for high production work. Both tractor-mounted sprayers injected herbicides into the water stream relative to ground speed to yield uniform application rates. Application costs appear to be favorable for treatment of small tracts, sensitive areas, and around the margins of aerially treated units.