In the early stages of this project, a search was conducted for shielded hardwood nursery sprayer prototypes. The six that were identified were from: Southern Weed Science Lab (figure 12); Winona Nursery (figure 13); Pinson Nursery (figure 14); W.W. Ashe Nursery (figure 15); the Texas Forest Service (figure 16); and E.A. Hauss Nursery (figure 17). Shop-quality mechanical drawings of the prototypes from the Southern Weed Science Lab, and the Winona and Pinson Nurseries are available on the MTDC Nurseries Drawings Web site: http://www.fs.fed.us/t-d/dwf/nurseries (Username: t-d, Password: t-d).

Figure 12—The drawing for a sprayer designed by the Southern Weed Science Lab in Stoneville, MS.
The hoods are made of sectioned PVC pipe. The tractor driver operates the sprayer.
For a pdf of this image click here.

Figure 13—A prototype sprayer developed by the Winona Nursery
(Winona, MS). The sprayer assembly is raised and lowered by
a hydraulic cylinder actuated by the operator. The spray tank
is mounted in front of the tractor.

Figure 14—A prototype sprayer developed by the Pinson
Nursery (Pinson, TN). The entire sprayer tilts up and back
when the tractor is not being used for spray operations.
—Courtesy of Tom Strickland/Mike Sheryl

Figure 15—A prototype sprayer developed by the W.W.
Ashe Nursery (Brooklyn, MS).—Courtesy of Chuck Grambling

Figure 16—A Texas Forest Service prototype
sprayer.—Courtesy of Harry Vanderveer

Figure 17—A prototype sprayer developed by the E.A. Hauss
Nursery (Atmore, AL). The tractor driver operates the sprayer.
The nursery seems very pleased with this machine.
—Courtesy of Craig Frazier