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Log grade studies in the ponderosa pine region : lumber grade recovery from Douglas fir, western larch, and white fir at Halfway, Oregon

Creator:: Forest Products Research Center
Abstract:: Second of a planned series of mill studies to test the adequacy of a log grading system for species associated with ponderosa pine, the study reported was made with the cooperation of Stilwell-Pengilley Lumber Company, under the direction of a committee representing participating agencies, namely: Bureau of Indian Affairs Bureau...
Resource Type:: Technical Report
Full Text:: Grade Recovery From Douglas Fir, Western Larch and White Fir at Halfway, Oregon Need for log grades

Log grade studies in the ponderosa pine region : lumber grade recovery from Douglas fir, western larch, and white fir at Enterprise, Oregon

Creator:: Burnet, Don, Pfeiffer, J. R. (Jack Russell), and Forest Products Research Center
Resource Type:: Technical Report

Seedling response to vegetation management in northeastern Oregon

Creator:: Lindsay, Amanda A.
Abstract:: Northeastern Oregon geology and climate provides moderately productive conditions for forest management and timber production. Although site preparation and planting are commonly used silvicultural practices, little research exists on the efficacy of specific forest herbicides and responses of seedling survival and growth in this region. This research seeks to improve...
Resource Type:: Masters Thesis
Full Text:: chemical site preparation treatments and several responses: western larch (Larix occidentalis) and

Effect of plant date on subsequent seedling field performance

Creator:: Taylor, Michael Monroe
Abstract:: Douglas-fir (Psudotsuga menziesii (Mirb.) Franco) seedlings were outplanted on eight dates (every three weeks from mid-August 2005 through mid-January 2006). On each plant date, seedlings from a conventional dormancy (CONV) induction treatment, including moisture and nutrient stress, and a shortened daylength (SD) treatment were outplanted on three western Oregon sites...
Resource Type:: Masters Thesis
Full Text:: Douglas-fir and western larch seedlings in Eastern Washington. Of particular interest was the

Growth and yield of western larch under controlled levels of stocking in the Blue Mountains of Oregon

Creator:: Cochran, P.H.
Abstract:: Repeated thinning to five growing-stock levels resulted in widely differing tree sizes and volumes per acre after 30 years. Largest trees but the least cubic-volume yield per acre were produced in the heaviest thinning level, whereas highest board-foot yields were found in intermediate thinning levels. partial defoliation by larch casebearer...
Resource Type:: Technical Report

Twenty-five-year response of Larix occidentalis stem form to five stand density regimes in the Blue Mountains of eastern Oregon

Creator:: Lennette, Andrew P.
Abstract:: Upper-stem diameter measurements from a levels-of-growing-stock study on Larix occidentalis in the Blue Mountains of eastern Oregon were collected over a 25 year period with an optical dendrometer. The following hypotheses were tested with these data: 1) stand density regime has a significant effect on stem form; and 2) crown...
Resource Type:: Masters Thesis

Persistence of western juniper resource islands following canopy removal

Creator:: Miwa, Christopher
Abstract:: Western juniper (Juniperus occidentalis) cover has more than doubled within the last century and currently occupies over 9 million acres in the Intermountain West. Encroachment has altered the spatial distribution of soil nutrients and plants in these systems, forming nutrient enriched 'resource islands,' under tree canopies. The purpose of this...
Resource Type:: Masters Thesis
Full Text:: (Miller et al., 1987). In central and eastern Oregon western juniper forests have expanded especially

Vegetation and soil response to tree removal methods in invasive western juniper woodlands

Creator:: O'Connor, Casey A.
Abstract:: On piñon-juniper encroached sites that lack the understory fuels to carry a prescribed fire, treatment options are limited to mechanical methods. Cutting with chainsaws and leaving the trees on site has been the primary treatment method for such sites, however this method creates a potential fire hazard, particularly in the...
Resource Type:: Masters Thesis
Full Text:: common methods used to treat invasive western juniper in eastern Oregon. The utilization of heavy

Seed bank response to juniper expansion in the semi-arid lands of Oregon, USA

Creator:: Duncan, Corinne M.
Abstract:: Expansion of Juniperus occidentalis into the sagebrush steppe has resulted in significant changes in understory composition. A consequence of increased J. occidentalis dominance may be a depletion of the seed bank. The potential for depletion is problematic because a reduction in the amount of species available from the seed bank...
Resource Type:: Masters Thesis
Full Text:: . Western juniper in eastern Oregon. U.S. Forest Service General Technical Report NW-GTR-464. Hassan

Estimating a juniper biomass supply from private rangelands : the impact of distance and biotic factors on costs

Creator:: McCaulou, Jeff C.
Abstract:: Central Oregon has attracted attention as a potential location for a biomass industry based on a locally fixed source of western juniper (Juniperus occidentalis Hook) feedstock. This study identifies a supply of juniper from private lands to determine how much of the available juniper is economically supplied at alternative prices...
Resource Type:: Masters Thesis
Full Text:: . Western Juniper acreage has increased by over 700 percent in Eastern Oregon in the past 60 years. The

ScholarsArchive@OSU

Log grade studies in the ponderosa pine region : lumber grade recovery from Douglas fir, western larch, and white fir at Halfway, Oregon

Log grade studies in the ponderosa pine region : lumber grade recovery from Douglas fir, western larch, and white fir at Enterprise, Oregon

Seedling response to vegetation management in northeastern Oregon

Effect of plant date on subsequent seedling field performance

Growth and yield of western larch under controlled levels of stocking in the Blue Mountains of Oregon

Twenty-five-year response of Larix occidentalis stem form to five stand density regimes in the Blue Mountains of eastern Oregon

Persistence of western juniper resource islands following canopy removal

Vegetation and soil response to tree removal methods in invasive western juniper woodlands

Seed bank response to juniper expansion in the semi-arid lands of Oregon, USA

Estimating a juniper biomass supply from private rangelands : the impact of distance and biotic factors on costs

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