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Better Douglas fir forests from better seed

Creator:: Isaac, Leo A. (Leo Anthony), 1892-1970
Abstract:: Gerald W. Williams Collection. Agnes H. Anderson research publications.
Resource Type:: Book

Seed set and the proportion of progeny due to self-fertilization in a Douglas-fir seed orchard

Creator:: Omi, Steven Katsu
Abstract:: The effects of clonal variability, crown position of cones, and top-pruning of ramets to reduce height growth, on 1) the proportion of viable self-fertilized progeny (s) and 2) the proportion of filled seeds (PF), were investigated in a 20 year-old Douglas-fir (Pseudotsuga menziesii [Mirb.1 Franco) seed orchard. Cones were collected...
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

The effects of inbreeding and supplemental mass pollination upon seed yields in a Douglas-fir seedling seed orchard

Creator:: Cress, Daniel W.
Abstract:: Effects of four inbreeding levels (F = 0, 0.125, 0.25, 0.5) and two supplemental mass pollination (SMP) methods (agitation of naturally shedding pollen with "air blaster" and pollen application from large "pollen wand" atomizer) were evaluated on seed of trees from eleven full-sibling Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) families in...
Resource Type:: Masters Thesis

Genetic variation and phenotypic stability among three elevational sources of coastal Douglas-fir from southwest Oregon

Creator:: Mangold, Robert
Abstract:: This study had three objectives: (1) to determine the degree to which within-source genetic variation and genetic correlations differ among elevational sources of Douglas-fir [Pseudotsuga menziesii (Mirb). Franco var. menziesii]; (2) to ascertain the degree to which phenotypic stability differs among and within elevational sources; and (3) to compare the...
Resource Type:: Dissertation

Effect of seedbeds on germination and survival of Douglas-fir

Creator:: Hermann, Richard K., Chilcote, William W., and Oregon State University. Forest Research Laboratory
Abstract:: Germination and survival of Douglas-fir on seedbeds of unburned, lightly burned, and severely burned soil, charcoal, litter, and sawdust, exposed to 100, 75, and 25 percent of full light, were studied on a south-facing clearcutting in the Coast range of Oregon. Irrespective of exposure to light, germination was best on...
Resource Type:: Technical Report
Full Text:: newly cut logs of Douglas-fir. The other seed- bed materials were collected from a nearby area recently

Impact of insects on seed production in a Douglas-fir seed orchard in Oregon

Creator:: Dombrosky, Scott A.
Abstract:: The impact of various factors on seed production in a Douglas-fir (Pseudotsuga menziesii) seed orchard in western Oregon was examined by monitoring the fate of seeds in thirty cones, stratified into three crown levels, on each of ten trees during the 1984 growing season. Cones were examined monthly between April...
Resource Type:: Masters Thesis
Full Text:: Impact of insects on seed production in a Douglas-fir seed

Artificial seeding of pine in central Oregon

Creator:: Wagg, John William Bruce, Hermann, Richard K., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: to be a more favorable seedbed than either kind of litter. Seed lings emerged earlier and

Viability of seeds from squirrel-cut Douglas fir cones

Creator:: Lavender, Denis P. and Engstrom, W. H.
Abstract:: To determine if squirrels (Sciurus douglasii var.) cut cones before the seeds are ripe, a series of collection points was established in the Willamette Valley and the Cascade Mountains in the summer of 1954. The areas were inspected at intervals during August, September and October of 1954, and freshly cut...
Resource Type:: Technical Report
Full Text:: obtained Douglas fir (Pseudot- suga taxifolia Poir.) seed from two major sources: 1. Cones picked from

A three year evaluation of Douglas-fir cone and seed insects in Montana and Yellowstone National Park

Creator:: Dewey, Jerald E. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: A 3-year evaluation of Douglas-fir cones in Montana and Yellowstone National Park, Wyoming, showed the western spruce budworm, Choristoneura occidentalis Freeman, and midges were the most common and injurious insects found each year. Injury was so severe at some plots that no sound seeds could be found.
Resource Type:: Technical Report
Full Text:: Evaluation of no.72-1 ;LAS-FIR CONE AND SEED INSECTS itana and Yellowstone National Park • I U. S

ScholarsArchive@OSU

Better Douglas fir forests from better seed

Seed set and the proportion of progeny due to self-fertilization in a Douglas-fir seed orchard

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

The effects of inbreeding and supplemental mass pollination upon seed yields in a Douglas-fir seedling seed orchard

Genetic variation and phenotypic stability among three elevational sources of coastal Douglas-fir from southwest Oregon

Effect of seedbeds on germination and survival of Douglas-fir

Impact of insects on seed production in a Douglas-fir seed orchard in Oregon

Artificial seeding of pine in central Oregon

Viability of seeds from squirrel-cut Douglas fir cones

A three year evaluation of Douglas-fir cone and seed insects in Montana and Yellowstone National Park

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