Index Catalog // ScholarsArchive@OSU

Growth and yield, structure, composition, and soil compaction in a Western Oregon Douglas-fir forest after 35 years of modified selection thinning

Creator:: Stringer, Darin S.
Abstract:: Modified selection thinning has been utilized by some non-industrial foresters in Douglas-fir forests of Western Oregon and Washington for at least 35 years. This silvicultural strategy has not been tested, but has often been associated with reduced volume production and other undesirable effects. It continues to be used on many...
Resource Type:: Masters Thesis

Development of Douglas-fir log quality, product yield, and stand value after repeated thinnings in western Oregon

Creator:: Christensen, Glenn A.
Abstract:: Forest managers are beginning to take an interest in management of young Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) in Western Oregon and Washington. Studies have established the relationship between growth and levels-of-growing-stock but few have established a link to wood quality and value. This study used data collected from a long...
Resource Type:: Masters Thesis

Persistence and age-age genetic correlations of stem defects in Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco)

Creator:: Temel, Fatih
Abstract:: Stem defects, including sinuosity, large branches, and the occurrence of steep-angled branches (e.g., forks and ramicorns) can occur with high frequency in young plantations of Coastal Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco). The importance of including these stem defects as criteria in early selection depends, in great part, on...
Resource Type:: Masters Thesis

Interaction of seed source, competition and fertility on planted Douglas-fir (Pseudotstuga menziesii [Mirb.] Franco)

Creator:: Roth, Brian Edward
Abstract:: The main objective of this study was to evaluate the interaction between herbaceous competition, fertility, and seed source on Douglas-fir survival and growth. A secondary objective was to evaluate the effect of these various factors on the production of lammas shoots and the selectivity of deer browse. Finally, the role...
Resource Type:: Masters Thesis

Transplant shock in stored and unstored 2+0 Douglas-fir seedlings : effect of initial root volume and soil water content

Creator:: Haase, Diane L.
Abstract:: Transplant shock was induced by applying a range of soil water contents to unstored and cold-stored two-yearold (2+0) bareroot Douglas-fir seedlings graded by root volume. Moisture stress had the greatest influence on morphological characteristics commonly associated with transplant shock. Terminal growth, lateral growth, stem diameter growth, and needle length increased...
Resource Type:: Masters Thesis

Fall fertilization effects on Douglas-fir seedling quality

Creator:: Birchler, Todd M.
Abstract:: Coastal Douglas-fir (Psuedotsuga menziesii (Mirb.) Franco) 1 + 1 seedlings were fertilized with two types of fertilizers (NB4NO3+K2SO4 and (NH.4)2 SO4+KC1) at four rates (0, 80, 160, 320 kg N and K/ha) split over 3 application dates (September 19, October 13, November 1, 1996). By January 10, total Kjeldahl nitrogen...
Resource Type:: Masters Thesis
Full Text:: on Douglas-fir Seedling Quality. Signature redacted for privacy. Abstract approved: Robert W

Pruning young Douglas-fir (Pseudotsuga menziesii [mirb.] Franco) in a western Oregon agroforestry setting : changes in tree water relations and effects on forage production

Creator:: Withrow-Robinson, Bradford A.
Abstract:: There is renewed interest in agroforestry as a management strategy for marginal agricultural lands in western Oregon. Silvopastoral systems combine tree and forage production, which involve crops and practices familiar to the area. The objective of this study was to determine how management influences the physiology and ecological interactions of...
Resource Type:: Masters Thesis

Genetic diversity and differentiation in Douglas-fir from RAPD markers of nuclear and mitochondrial origin

Creator:: Aagaard, Jan Erik
Abstract:: In order to better understand the evolutionary patterns revealed by molecular markers, we studied genetic diversity and differentiation of populations and races of Douglas-fir using randomly amplified polymorphic DNA (RAPD) markers of nuclear and mitochondrial origin. We conducted a range-wide survey of RAPD diversity and differentiation, and compared RAPDs and...
Resource Type:: Masters Thesis

Wood quality and strength relationships in Douglas-fir (Pseudotsuga mezieseii (Mirb.) Franco) wood of different maturity

Creator:: Carter, Keoki Apokolani
Abstract:: The objectives of this study were to determine: 1) differences in average wood quality and strength properties of clear-wood specimens sampled from juvenile, transition, and mature wood zones in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) trees from known forest sites; 2) relationships among wood quality properties [specific gravity (SG), rings per...
Resource Type:: Masters Thesis

Physiology and genetics of drought hardiness in coastal Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) seedlings

Creator:: Lomas, M. Christine
Abstract:: Physiology and genetics of drought hardiness were investigated in two-year-old coastal Douglas-fir seedlings from 39 full-sib families obtained from coastal British Columbia and grown at Oregon State University, Corvallis, Oregon. The seedlings were subjected to three drought treatments (control, moderate, and severe drought) in their second growing season (June through...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Growth and yield, structure, composition, and soil compaction in a Western Oregon Douglas-fir forest after 35 years of modified selection thinning

Development of Douglas-fir log quality, product yield, and stand value after repeated thinnings in western Oregon

Persistence and age-age genetic correlations of stem defects in Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco)

Interaction of seed source, competition and fertility on planted Douglas-fir (Pseudotstuga menziesii [Mirb.] Franco)

Transplant shock in stored and unstored 2+0 Douglas-fir seedlings : effect of initial root volume and soil water content

Fall fertilization effects on Douglas-fir seedling quality

Pruning young Douglas-fir (Pseudotsuga menziesii [mirb.] Franco) in a western Oregon agroforestry setting : changes in tree water relations and effects on forage production

Genetic diversity and differentiation in Douglas-fir from RAPD markers of nuclear and mitochondrial origin

Wood quality and strength relationships in Douglas-fir (Pseudotsuga mezieseii (Mirb.) Franco) wood of different maturity

Physiology and genetics of drought hardiness in coastal Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) seedlings

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