. Lumber recovery from dead ponderosa pine in the Colorado Front Range. . Stain No stain Stain No stain Live Dead < 2 years Dead 3 to 5 years MORTALITY CLASS Figure 7—To evaluate the effects of blue stain on lumber grade, all the lumber was dual graded: once when stain was allowed in the boards and once when no stain was allowed on the board. There were no stained boards in the live sample; it is included for comparison only. The blue-stained boards from trees dead for 2 years dropped from 2 Common and Moulding and Better into 3 Common. The blue- stained boards from the trees dead from 3 to
. Lumber recovery from dead ponderosa pine in the Colorado Front Range. . Stain No stain Stain No stain Live Dead < 2 years Dead 3 to 5 years MORTALITY CLASS Figure 7—To evaluate the effects of blue stain on lumber grade, all the lumber was dual graded: once when stain was allowed in the boards and once when no stain was allowed on the board. There were no stained boards in the live sample; it is included for comparison only. The blue-stained boards from trees dead for 2 years dropped from 2 Common and Moulding and Better into 3 Common. The blue- stained boards from the trees dead from 3 to 5 years dropped into both 3 Com- mon and 4 Common. Use Understanding potential volume and value losses associated with dead timber is a necessary part of effective use of our timber resource. Other publications show average value losses in 1-year-dead material ranging from 16 percent in white pine (Snellgrove and Cahill 1980) to 28 percent in ponderosa pine (Fahey 1980). Log size and grade are important factors to consider when a degrade percentage is selected. The logs in this study were small-diameter grade 5 logs and had a 10-percent loss in value in the first year after death. This shows that even in low-grade stands, early detection and salvage of beetle-killed timber is essential to maintaining the value of lumber products. Literature Citations Bruce, David. 1970. Estimating volume of Douglas-fir butt logs. Res. Note PNW-117. Portland, OR: Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 5 p. Darr, David R.; Fahey, Thomas D. 1973. Value for small diameter stumpage affected by product prices, processing equipment, and volume measurements. Res. Pap. PNW-158. Portland, OR: Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 16 p. Draper, Norman R.; Smith, Harry. 1981. Applied regression analysis. 2d ed. New York: John Wiley and Sons. 709 p. Fahey, Thomas D. 1980. Beetl
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