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334 results found
The growth response after 20 years from an initial spacing study established in a ponderosa pine (Pinus ponderosa Dougl. ex Laws.) and lodgepole pine (Pinus contorta Dougl. ex Loud.) plantation was measured in central Oregon. The study was designed to compare the growth rates of…
Author(s): K.W. Seidel
Keywords: Stand density, plantation spacing, growth, increment, ponderosa pine, Pinus ponderosa, lodgepole pine, Pinus contorta, central Oregon, Oregon (central)
Source: Res. Pap. PNW-RP-410. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 14 p
Year: 1989
Lumber recovery information from live and beetle-killed ponderosa pine (Pinus ponderosa Dougl. ex Laws) in the Colorado Front Range is presented. No significant difference in lumber volume was found among the samples. Significant differences were found in lumber value among the live, 1-…
Author(s): Susan Willits, Richard O. Woodfin, Thomas A. Snellgrove
Keywords: Lumber recovery, ponderosa pine, Pinus ponderosa, Colorado Front Range, beetle-killed pine, blue stain
Source: Res. Pap. PNW-RP-428. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 14 p
Year: 1990
Three microscopic characters were evaluated for the identification of Pinus contorta and Pinus ponderosa. The tangential diameter of the resin canals, including the epithelium, was compared to the tangential diameter of the entire resin canal complex. The latter measurement was shown to give…
Author(s): Alex C. Wiedenhoeft, Regis B. Miller, Terra J. Theim
Keywords: Resin canal, wood anatomy, wood identification, Pinus contorta, Pinus ponderosa
Source: IAWA journal. Vol. 24, no. 3 (2003): Pages 257-267
Year: 2003
Pringle Falls Experimental Forest has been a center for research in ponderosa pine forests east of the crest of the Cascade Range since 1931. Long-term research facilities, sites, and future research opportunities are currently at risk from stand-replacement wildfire because of changes in stand…
Author(s): Andrew Youngblood, Kim Johnson, Jim Schlaich, Boyd Wickman
Keywords: ponderosa pine forests, stand structure, Pinus ponderosa
Source: In: Shepperd, Wayne D.; Eskew, Lane G., compilers. 2004. Silviculture in special places: Proceedings of the National Silviculture Workshop; 2003 September 8-11; Granby, CO. Proceedings RMRS-P-34. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 31-48
Year: 2004
Thousands of acres of densely stocked ponderosa pine forests surround Flagstaff, AZ. These stands are at high risk of fire, insect, and disease outbreak. Stand density management activity can be expensive, but product recovery from the thinned material could help defray removal costs. This project…
Author(s): Eini C. Lowell, David W. Green
Keywords: Pinus ponderosa, Smallwood, Logging, Lumber, Wood utilization, Thinning, Recovery, Yields, Volume, Arizona
Source: In: Vance, Regina K.; Edminster, Carleton B.; Covington, W. Wallace; Blake, Julie A., comps. Ponderosa pine ecosystems restoration and conservation: steps toward stewardship; 2000 April 25-27; Flagstaff, AZ. Proceedings RMRS-P-22. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 161-165.
Year: 2001
Service-life tests indicate that ponderosa pine fenceposts treated with preservatives performed well after field exposure of 30 years. Treating plants in the Black Hills area used commercial methods to treat the posts with creosote, pentachlorophenol, and waterborne arsenicals. Test sites were in…
Author(s): Donald C. Markstrom, Lee R. Gjovik
Keywords: Pinus ponderosa, fence posts, wood preservatives, service life, South Dakota
Source: Research paper RM-300. Fort Collins, Colo.: US Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station: 9 p
Year: 1992
Longitudinal stress wave nondestructive evaluation (NDE) techniques have been used in a variety of applications in the forest products industry. Recently, it has been shown that they can significantly aid in the assessment of log quality, particularly when they are used to predict performance of…
Author(s): Robert J. Ross, Susan W. Willits, William Von Segen, Terry Black, Brian K. Brashaw, Roy F. Pellerin
Keywords: Pinus ponderosa, Veneers, Logs, Diameter, Nondestructive testing
Source: Forest products journal. Vol. 49, nos. 11/12 (Nov./Dec. 1999).:p. 60-62 : ill
Year: 1999
The relationship between longitudinal stress wave transit time and wood moisture content (MC) was examined as a potential means of estimating MC control points in dry kiln schedules for lumber. A linear relationship was found between the relative transit time and the average MC of sugar maple and…
Author(s): William T. Simpson, Xiping Wang
Keywords: Acer saccharum, Pinus ponderosa, Lumber, Kiln drying, Wood moisture, Moisture content, Longitudinal stress waves, Wave analysis
Source: Forest products journal. Vol. 51, no. 10 (Oct. 2001).:p. 51-54.
Year: 2001
Fire has been an important ecological process in eastside Cascade ecosystems for millennia. Fire regimes ranged from low severity to high severity, and historic fire return intervals ranged from less than a decade to greater than 300 years. Fire history and effects are described for grassland and…
Author(s): James K. Agee
Keywords: Forest fire, fire history, Juniperus occidentalis, Pinus ponderosa, Pseudotsuga menziesii, Abies grandis, Abies lasiocarpa, Pinus contorta
Source: Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 52 p. (Everett, Richard L., assessment team leader; Eastside forest ecosystem health assessment; Hessburg, Paul F., science team leader and tech. ed., Volume III: assessment.)
Year: 1994
Statistical models are presented which relate near-view scenic beauty of ponderosa pine stands in the Southwest to variables describing physical characteristics. The models suggest that herbage and large ponderosa pine contribute to scenic beauty, while numbers of small and intermediate-sized pine…
Author(s): Thomas C. Brown, Terry C. Daniel
Keywords: Scenic beauty, landscape assessment, forest esthetics, Pinus ponderosa
Source: Res. Pap. RM-RP-256. Fort Collins, CO: U.S. Department of Agriculture, Forest Servce, Rocky Mountain Forest and Range Experiment Station. 35 p.
Year: 1984