Index Catalog // ScholarsArchive@OSU

Fertilization of 2-0 ponderosa pine seedlings in the nursery and field : morphology, physiology, and field performance

Creator:: Gleason, John F.
Abstract:: Two-year-old ponderosa pine (Pinus ponderosa Laws.) from two seed sources were grown at two nurseries. The Fremont seed source was raised at Bend and Stone Nursery; the Ochoco was grown at only the Bend Nursery. The seedlings were fertilized in late September-early October with nitrogen (N) or nitrogen plus potassium...
Resource Type:: Masters Thesis

Genetic variation and mating system of ponderosa pine in the Willamette Valley of Oregon

Creator:: Gooding, Geoffrey David
Abstract:: The population genetic structure of ponderosa pine (Pinus ponderosa Dougi.) in the Willamette Valley of Oregon was investigated. Cones were collected from native stands of ponderosa pine from the Willamette Valley, eastern Oregon, southwest Oregon and the Puget Sound Basin of Washington. Seeds were subjected to isozyme analysis of 12...
Resource Type:: Masters Thesis
Full Text:: Variation and Mating Svstem of Ponderosa Pine in the Willamette Vallev of Oregon. Abstract approved

Stress response as a basis for disease susceptibility in Ponderosa Pine

Creator:: Koonce, Andrea
Abstract:: Trees stressed by artificial and natural means were sampled for response in growth and vigor, carbohydrate content, resin pressure characteristics, and water relations. Tree response was found to reflect both the severity and type of stress imposed. Crown color and appearance were reliable indicators of prolonged stress and advanced decline...
Resource Type:: Masters Thesis
Full Text:: SUSCEPTIBILITY IN PONDEROSA PINE Abstract Approved: Signature redacted for privacy. Trees stressed by

Long-term effects of prescribed fire on nitrogen availability in ponderosa pine stands in central Oregon

Creator:: Monleon-Moscardo, Vicente J.
Abstract:: The effects of prescribed burning on the rates of recent litter decomposition, nitrogen and phosphorus release from litter, soil total and inorganic nitrogen pools, and net nitrogen mineralization were determined in ponderosa pine sites that had been burned 0.3, 5 or 12 years earlier. Prescribed burning decreased litter decomposition rates...
Resource Type:: Masters Thesis

The effects of mechanical and chemical site preparation on ponderosa pine (Pinus ponderosa Dougl. ex Laws.) and lodgepole pine (Pinus contorta Dougl. ex Loud.) performance, associated vegetation, and soil properties in southcentral Oregon eight years after planting

Creator:: Ross, Darrell W.
Abstract:: The effects of six alternative site preparation treatments were compared at three different sites in southcentral Oregon. Treatments included a logged-only control, ripping, brushblading, disking, chemical, and chemical followed by disking. Subplots containing ponderosa pine bareroot (2+0) and containerized (1+0) and lodgepole pine containerized (1+0) seedlings were also included in...
Resource Type:: Masters Thesis

Performance of Pinus ponderosa seedlings in clearcuts, patch cuts and undisturbed forests on lavas

Creator:: Hutten, Martin A. B.
Abstract:: The survival, growth, foliar nutrient status, ectomycorrhiza (EM) colonization, and associative N-fixation of ponderosa pine seedlings (Pinus ponderosa var. ponderosa Doug!. ex Laws.) were studied under different gap sizes in forest canopy during the first growing season. Seedling performance variables were assessed relative to gap size of the forest canopy...
Resource Type:: Masters Thesis

Mycorrhizal status of post-fire Pezizales

Creator:: Fujimura, Kei E.
Abstract:: Post-fire Pezizales often fruit seasonally approximately six weeks after a fire in successional groups over the course of two years. Two methods, pure culture synthesis and PCR-based identification, were used to determine if some of these species were mycorrhizal. Eleven fungal isolates, Anthracobia melaloma, Gyromitra infula, Helvella compressa, Morchella sp.,...
Resource Type:: Masters Thesis
Full Text:: and ponderosa pine) in an aseptic system for the pure culture synthesis experiment. Four fungi were

Morphological characteristics of ponderosa pine and lodgepole pine regeneration nine years after stand density reduction at three sites in central Oregon

Creator:: Michel, Alexa K.
Abstract:: Without the natural occurrence of fire in ponderosa pine forests of the western US, lodgepole pine has started to dominate regeneration in many forest stands and may be gradually replacing ponderosa pine over time. This development, however, conflicts with recent efforts in this region to restore old-aged, open ponderosa pine...
Resource Type:: Masters Thesis
Full Text:: Characteristics of Ponderosa Pine and Lodgepole Pine Reqeneration Nine Years after Stand Density Reduction at

Survival and growth of Douglas-fir and ponderosa pine during eight years of whiteleaf manzanita and herb competition in southwest Oregon

Creator:: Funez, Atilio Ortiz
Abstract:: This thesis examines the 8-year growth trend of Douglas-fir (Pseudotsuga menziesii (mirb.)Franco), ponderosa pine (Pinus ponderosa Dougl. ex laws.), and whiteleaf manzanita (Arctostaphylos viscida Parry). Manzanita stands ranging from 1700/ha to 27000/ha density were grown among mixed conifers of the same age, which were planted in 1981 at 250x250 cm...
Resource Type:: Masters Thesis

Effects of shrubs and herbs on conifer regeneration and microclimate in the Rhododendron-Vaccinium-Menziesia community of south-central British Columbia

Creator:: Coates, K. Dave
Abstract:: A field study was established to determine the impact of interfering vegetation on survival and growth of Engelmann spruce (Piceaeigelmannii Parry) and lodgepole pine (Pinus contorta var contorta Dougi.) at a site in the high elevation Engelmann spruce-Subalpine fir (ESSF) zone, of south-central British Columbia. The study examined (1) the...
Resource Type:: Masters Thesis
Full Text:: and growth of Engelmann spruce (Picea engelmannii Parry) and lodgepole pine (Pinus contorta var

ScholarsArchive@OSU

Fertilization of 2-0 ponderosa pine seedlings in the nursery and field : morphology, physiology, and field performance

Genetic variation and mating system of ponderosa pine in the Willamette Valley of Oregon

Stress response as a basis for disease susceptibility in Ponderosa Pine

Long-term effects of prescribed fire on nitrogen availability in ponderosa pine stands in central Oregon

The effects of mechanical and chemical site preparation on ponderosa pine (Pinus ponderosa Dougl. ex Laws.) and lodgepole pine (Pinus contorta Dougl. ex Loud.) performance, associated vegetation, and soil properties in southcentral Oregon eight years after planting

Performance of Pinus ponderosa seedlings in clearcuts, patch cuts and undisturbed forests on lavas

Mycorrhizal status of post-fire Pezizales

Morphological characteristics of ponderosa pine and lodgepole pine regeneration nine years after stand density reduction at three sites in central Oregon

Survival and growth of Douglas-fir and ponderosa pine during eight years of whiteleaf manzanita and herb competition in southwest Oregon

Effects of shrubs and herbs on conifer regeneration and microclimate in the Rhododendron-Vaccinium-Menziesia community of south-central British Columbia

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