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Abstract
A recent lumber recovery study of pruned and unpruned ponderosa pine (
Pinus ponderosa Dougl. ex Laws.) was used to project the financial return from pruning ponderosa pine in the Medford District of the Bureau of Land Management and in the Ochoco and Deschutes National Forests. The cost of pruning at which the investment would yield an expected 4-percent real rate of return was positive on sites where individual tree growth is fairly high, pruning is done as early as biologically possible given crown removal limitations, and the harvest is 30 to 70 years after pruning. The better situations showed a break-even .cost of up to $11 dollars per tree.
Citation
Fight, Roger D.; Bolon, Natalie A.; Cahill, James M. 1992. Financial analysis of pruning ponderosa pine. Res. Pap. PNW-RP-449. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 17 p.