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Modern equipment used in the manufacture of Douglas fir plywood

Creator:: Douglas, Manfred I.
Resource Type:: Undergraduate Thesis
Full Text:: ............ 4 V. III. Jointers .... ................................. 44 iap1ng p1icer ...s

Root biomass studies of old-growth Douglas-fir

Creator:: Santantonio, Daniel
Abstract:: Root biomass studies were conducted in an old-growth stand of conifers in the western Cascades of Oregon. The root systems of three Douglas-firs (Pseudotsuga menziesii var. menziesii (Mirb. ) Franco) with diameters at breast height of 94, 110, and 135 cm were excavated and weighed to provide a basis for...
Resource Type:: Masters Thesis

Carbon and nitrogen allocation patterns of 2-0 Douglas-fir seedlings following nitrogen fertilization in the autumn

Creator:: Margolis, Hank A.
Abstract:: Douglas-fir (Pseudotsuga menziesii Mirb. Franco) seedlings at a nursery in western Oregon were fertilized with nitrogen in October. Free amino acid (FAA) and total nitrogen concentrations in needles, stems and fine roots were followed from before fertilization until just prior to budbreak the following spring. Before budbreak in mid-March, the...
Resource Type:: Dissertation

The effects of low temperatures on dormancy release in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) from western Oregon, Washington, and California

Creator:: Sugano, Albert Itsuki
Abstract:: The effect of low temperatures given at different times and duration upon the time of bud burst, shoot elongation, number of needles developed and needle length in Douglas-fir plants from the Oregon Cascades and three coastal areas ranging from Washington to California were determined. The plants were grown outside in...
Resource Type:: Masters Thesis

Physiological and anatomical studies of several groups of Douglas-fir (pseudotsuga menziesii (Mirb.) Franco) seedlings which demonstrated differential survival potential under drought stress

Creator:: Heiner, Terry Charles, 1941-
Abstract:: Several hundred two year old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings were planted in an enclosure designed to permit control of soil moisture. The seedlings came from five seed sources in southern Oregon and one seed source in northwestern Oregon. Mortality terminal and lateral budburst, and soil moisture were recorded...
Resource Type:: Masters Thesis

Effects of light preconditioning on the seasonal water relations of nursery-grown Douglas-fir

Creator:: Drew, Allan Pierce
Abstract:: Douglas-fir seedlings of a single seed source were grown in a nursery under three levels of light intensity: 9, 44, and 100 percent of full light. Growth over an entire growing season was monitored in terms of proportionate distribution of dry matter to shoot and root systems. This was replicated...
Resource Type:: Dissertation

Growth behavior of Douglas-fir reproduction in the shade of managed forest in the interior Coast Range of Oregon

Creator:: Del Rio, Ernest
Abstract:: During the past 20 years, repeated thinning of a Douglas-fir forest, now 65 years old, has allowed desired limits of basal area to be maintained. In the process, the understory environment has altered sufficiently to allow Douglas-fir reproduction to establish in abundance. The forest is located on the east side...
Resource Type:: Masters Thesis

First year survival and growth of planting stock of various size on adverse sites

Creator:: Chetock, Jerome J.
Abstract:: First year survival of Douglas-fir seedlings outplanted in areas characterized by intense vegetative competition is heavily dependent on available soil moisture. To test this hypothesis, five distinct classes of Douglas-fir planting stock were planted on the south slope of McCulloch Peak in McDonald Forest in February of 1975. The stocking...
Resource Type:: Masters Thesis

Effect of light quality and periodicity upon germination of Douglas-fir seed (Pseudotsuga menziesii (Mirb.) Franco) and on growth of Douglas-fir seedlings

Creator:: Johnson, Le Roy Curtis
Abstract:: A study on the effects of light quality and periodicity on the germination of Douglas-fir seed and the growth of Douglas-fir seedlings was conducted. Interest was focused on responses that could be measured and observed without biochemical assay. It was found that .Douglas-fir seed,s would respond to red-light treatments by...
Resource Type:: Masters Thesis
Full Text:: ) published their classical paper on light periodicity. They coined the word "photoperiodism" to des-. cribe

Stand improvement of Douglas fir

Creator:: Alexander, Lucien
Resource Type:: Undergraduate Thesis
Full Text:: scope to answer in a paper on stand improve ment. However, a goal for the forest manager to work

ScholarsArchive@OSU

Modern equipment used in the manufacture of Douglas fir plywood

Root biomass studies of old-growth Douglas-fir

Carbon and nitrogen allocation patterns of 2-0 Douglas-fir seedlings following nitrogen fertilization in the autumn

The effects of low temperatures on dormancy release in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) from western Oregon, Washington, and California

Physiological and anatomical studies of several groups of Douglas-fir (pseudotsuga menziesii (Mirb.) Franco) seedlings which demonstrated differential survival potential under drought stress

Effects of light preconditioning on the seasonal water relations of nursery-grown Douglas-fir

Growth behavior of Douglas-fir reproduction in the shade of managed forest in the interior Coast Range of Oregon

First year survival and growth of planting stock of various size on adverse sites

Effect of light quality and periodicity upon germination of Douglas-fir seed (Pseudotsuga menziesii (Mirb.) Franco) and on growth of Douglas-fir seedlings

Stand improvement of Douglas fir

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