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Browsing by Subject "Douglas fir -- Seedlings"
Now showing items 1-20 of 22
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(1966-04-20)Two seed sources of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings were grown under several environments in controlled growth chambers and in a natural environment. All seedlings were grown for six month ...
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(1992-12-02)Two-year old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings from two seed lots of different predicted hardiness levels were grown in two separate nurseries. Seedlings were lifted every four weeks from early ...
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(1989-04-04)The objective of this thesis was to evaluate the hypothesis that bud development of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings is controlled by endogenous gibberellins or abscisic acid and that cultura ...
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(Corvallis, OR : Oregon State University, College of Forestry, 1986-03)
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(1997-07-03)Aphids are a widespread family of plant pests, whose abilities to suppress shoot and root growth are well documented for many terrestrial plants. Only a few studies have been conducted on conifer aphids of the genus Ci ...
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(Corvallis, Or. : Forest Research Laboratory, School of Forestry, Oregon State University, 1972-09)
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(Corvallis, Or. : Oregon Forest Lands Research Center, 1958-02)
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(1987-02-20)Tap-root wounds frequently occur on seedlings during lifting in forest tree nurseries. Data are needed to clarify guidelines for culling wounded seedlings. Two-year-old bareroot Douglas-fir (Pseudotsuga menziesii (Mir ...
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(1989-08-29)Ungerminated seed and recent germinants from 39 open-pollinated Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) families were planted in each of three competitive environments in order to determine the ...
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(1966-06-00)This study was designed to test the ability of atrazine and 8-hydroxyquinoline sulfate to reduce the transpiration stress and thus prolong the life of potted Douglas-fir seedlings under various levels of shade. Treat ...
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(1997-09-18)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 appli ...
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(1976-05-07)Stem form development of trees in response to wind has been established in the literature to be a response to stem sway induced by the wind. The response is manifested in modifications to height and diameter growth which ...
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(Corvallis : Forest Research Laboratory, Oregon State University, 1964-10)
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(Missoula, Mont. : USDA Forest Service, Northern Region, 1987)
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Pathogenicity of Fusarium from forest seedling nurseries on Douglas-fir and ponderosa pine seedlings (Missoula, Mont. : USDA Forest Service, Northern Region, Cooperative Forestry and Pest Management, 1986)
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(Corvallis, OR : Oregon State University, College of Forestry, 1991-05)
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(1986-02-20)In study 111, four Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stocktypes (1-0, 2-0 standard nursery run and low density bareroot seedlings, and 1 year old container stock) were outplanted in a randomized incompl ...
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(1992-06-17)Inoculation of planting holes with small amounts of soil from a mature forest and a plantation improved survival and growth of Pseudotsuga menziesii seedlings in a degraded clear-cut in southwestern Oregon. To determine ...
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(Corvallis, Or. : Forest Research Laboratory, School of Forestry, Oregon State University, 1976-06)
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(Corvallis : Forest Research Laboratory, Oregon State University, 1964-01)
Now showing items 1-20 of 22
