Slash pine canopy, spray

Figure 6. Observed and model calculated deposition at the top of the slash pine canopy for Trial 6, Withlacoochee Spray Trials.

Analysis of MnSCL tracer from cylindrical samplers revealed that a high percentage of the spray was unaccounted for only a few feet below the canopy top. A few feet below the canopy top, 67 to 75 percent of the spray was unaccounted for in the slash pine, and 75 to 83 percent was unaccounted for in the Ocala sand pine. Approximately 20 feet below the canopy top 77 to 90 percent of the spray was unaccounted for in the slash pine, and 85 to 95 percent in the Ocala sand pine. This trend was consistent from trial to trial and tree to tree. Results are given in Table VI. 

Table VI. Recovery of spray at three crown levels pine, relative to spray recovered at in slash and canopy top. Ocala sand...

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