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Stand improvement of Douglas fir

Creator:: Alexander, Lucien
Resource Type:: Undergraduate Thesis
Full Text:: kindness in making available many unpublished reports of that agency; to Professor T. J. Starker and

Effect of thinning and fertilization on wood properties and intra-ring characteristics in young Douglas-fir

Creator:: Bodner, Josef
Abstract:: The purpose of this study was to determine if thinning, fertilization or a combination of thinning and fertilization had an effect on overall average specific gravity, modulus of elasticity, modulus of rupture, fiber length and intra-ring characteristics. Material for this experiment consisted of 7 trees randomly selected from each of...
Resource Type:: Masters Thesis
Full Text:: express appreciation to Dr. T. Brown, Dr. J. Tappeiner and Dr. J. Tedesco for serving on my committee

Comparative rates of CO₂ production from the forest floor in the Douglas-fir ecosystem

Creator:: Phillips, Michael John
Abstract:: To obtain data on the decomposition of the forest floor, a battery operated electrolytic respirometer was developed making it possible to measure CO₂ evolution from field moist forest floor samples in situ independent of root respiration. Banks of four respirometers powered by two 12-volt batteries were installed in three old...
Resource Type:: Masters Thesis
Full Text:: clearcut that had been broadcast burned. All sites were located on or immediately adjacent to the H. J

The effects of mycorrhizal colonization and phosphorus fertilization on Douglas-fir seedling growth, morphology, and photosynthesis

Creator:: Black, C. H. (Charles H.)
Resource Type:: Dissertation
Full Text:: , Morphology, and Photosynthesis Abstract approved: Redacted for privacy C. T. Youn erg Mycorrhizal and

The relationship of the survival of Douglas-fir, Pseudotsuga menziesii (Mirb.) Franco, seedlings to certain soil and other site characteristics on the Tillamook Burn

Creator:: Lowry, Gerald L., 1928-
Resource Type:: Masters Thesis
Full Text:: the degree of MASTER OF SCIENCE June 1955 .r E E I t qE T T )a ll ri'-. n* raI[$ l'! F P

Effect of snowbrush on the establishment and growth of Douglas-fir seedlings

Creator:: Scott, William
Abstract:: Six, recent clear cut areas were selected in the Douglas-fir zone of the Western Cascade Range of Oregon to determine the environmental and nutritional effects that snowbrush has on the establishment and growth of Douglas-fir seedlings. One thousand eighty milacre sample plots on the six clear cuts were used to...
Resource Type:: Masters Thesis
Full Text:: GROWTH OF DOUGLAS-FIR SEEDLINGS Abstract approved: Redacted for Privacy (7C. T. .Voungbyrg Six, recent

The effects of supercritical CO₂ on the bending properties and treatment defects of four refractory wood species

Creator:: Anderson, Matthew E.
Abstract:: It is difficult to treat the heartwood of many wood species with liquid preservatives using conventional liquid processes. Supercritical fluids (SCF) used as carriers of preservatives to impregnate refractory wood species may be an attractive alternative to conventional liquid carriers. While SCF impregnation has many potential advantages, some wood species...
Resource Type:: Masters Thesis
Full Text:: ;....,.,,,.a.+-=:t-.1 ---.uf--71'-- ___ , __________ _ I L.-.!...L....1 T.:>fl"r.:>u T l\tf nrr~ll Robert J

The role of soil-water depletion and plant-moisture stress in soil classification and cambial activity of Douglas-fir

Creator:: Thomas, Byron R.
Abstract:: Relationships between soil-water stress and plant-moisture stress were studied with respect to soil classification and cambial activity in Douglas-fir. The study sites were forested with Douglas-fir and located in McDonald Forest and near Marys Peak in the Oregon Coast Range. Soil-water depletion was followed by the use of gypsum blocks...
Resource Type:: Dissertation
Full Text:: implementation of this study. Acknowledgments a r e also made to Drs. J. K. Munford, W. W. Chilcote, R. Garren

Pollen contamination trends in a maturing Douglas-fir seed orchard

Creator:: Adams, W. T., Hipkins, Valerie D., Burczyk, J., and Randall, W. K.
Abstract:: Pollen contamination was investigated in one block (block 4) of a 10-block Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seed orchard complex in western Oregon. Blocks (25 clones each) represent different breeding zones; thus, contaminant pollen sources not only included the adjacent natural stand of Douglas-fir, but also other blocks within the...
Resource Type:: Article
Full Text:: W.T. Adams, V.D. Hipkins, J. Burczyk, and W.K. Randall Abstract: Pollen contamination was

Modern equipment used in the manufacture of Douglas fir plywood

Creator:: Douglas, Manfred I.
Resource Type:: Undergraduate Thesis
Full Text:: reduces its temperature. i bee ]?igure ô -32- A ì ) r / 4 T / F j ' 1 4 I . t

ScholarsArchive@OSU

Stand improvement of Douglas fir

Effect of thinning and fertilization on wood properties and intra-ring characteristics in young Douglas-fir

Comparative rates of CO₂ production from the forest floor in the Douglas-fir ecosystem

The effects of mycorrhizal colonization and phosphorus fertilization on Douglas-fir seedling growth, morphology, and photosynthesis

The relationship of the survival of Douglas-fir, Pseudotsuga menziesii (Mirb.) Franco, seedlings to certain soil and other site characteristics on the Tillamook Burn

Effect of snowbrush on the establishment and growth of Douglas-fir seedlings

The effects of supercritical CO₂ on the bending properties and treatment defects of four refractory wood species

The role of soil-water depletion and plant-moisture stress in soil classification and cambial activity of Douglas-fir

Pollen contamination trends in a maturing Douglas-fir seed orchard

Modern equipment used in the manufacture of Douglas fir plywood

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