Financial Analysis of Pruning Douglas-Fir and Ponderosa Pine in the Pacific Northwest
Abstract:Recent lumber recovery studies of pruned and unpruned Douglas-fir (Pseudotsuga menziesii var. menziesii) and ponderosa pine (Pinus ponderosa var. ponderosa) were incorporated into computer software using lumber grade prices, growth and yield data, the cost of pruning, and interest rates to determine the expected financial return from pruning. Financial analyses showed that the cost of pruning at which the investment would yield an expected 4% real rate of return was positive on sites where individual tree growth is fairly high, pruning is done as early as biologically possible given limitations on crown removal, and the harvest is 30 to 70 yr after pruning. The better situations in Douglas-fir showed a breakeven cost of up to $21/tree and an internal rate of return exceeding 9%. The better situations in ponderosa pine showed a breakeven cost of up to $11/tree and an internal rate of return of 7%. West. J. Appl. For. 10(1):58-61.
Document Type: Journal Article
Affiliations: USDA Forest Service, Pacific Northwest Research Station, Portland, OR 97208
Publication date: April 1, 1993
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- Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Western Journal of Applied Forestry covers the western United States, including Alaska, and western Canada; WJAF will also consider manuscripts reporting research in northern Mexico that has potential application in the southwestern United States.
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