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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

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

Creator:: Hobbs, Stephen D., Oregon State University. Forest Research Laboratory, Byars, R. H ., Henneman, D. C., and Frost, C. R.
Abstract:: The effects of artificial shading and aspect on the performance of 1-0 container-grown Douglas-fir seedlings were evaluated 1 year after outplanting on four different aspects in southwest Oregon. The test areas, all characterized by steep slopes and shallow, skeletal soils with a surface mantle of loose rock and logging slash,...
Resource Type:: Technical Report
Full Text:: issue Does not circulate FIRST-YEAR PERFORMANCE OF 1-O CONTAINERIZED DOUGLAS-FIR SEEDLINGS ON DROUGHTY

Creator:: Zaerr, Joe B., Lavender, Denis P., and Oregon State University. Forest Research Laboratory
Abstract:: Results reported here are from a large study designed to evaluate the effects of certain nursery procedures on subsequent survival of Douglas-fir seedlings. The effects of storage conditions and lifting dates were reported elsewhere (9). The determination of the optimum size of seedling for planting on different sites has been...
Resource Type:: Technical Report
Full Text:: Size and Survival of 270 Douglas-Fir Seedlings Joe B. Zaerr Denis P. Lavender Research Paper 32

Creator:: Heiner, Terry Charles, 1941-, Lavender, Denis P., and Oregon State University. Forest Research Laboratory
Abstract:: Although the Douglas-fir region of the northwestern United States and British Columbia is frequently considered to have a common silviculture, obstacles to successful regeneration of the species range from competing vegetation and mammals on the mesic sites to extreme drought and heat on the xeric southerly exposures in northern California...
Resource Type:: Technical Report
Full Text:: differences by seed source of response to drought stress of Douglas-fir seedlings under laboratory and

Creator:: Ching, Kim K. and Oregon State University. Forest Research Laboratory
Abstract:: Survival and growth during three years at 8 out-planting areas are reported for Douglas-fir from 14 sources of seed. Early survival was highest near Nimpkish on Vancouver Island. At most plantations, trees from the local seed source grew as well as did those from the best three sources. Trees from...
Resource Type:: Technical Report
Full Text:: three years at 8 out-planting areas are reported for Douglas-fir from 14 sources of seed. Early

Creator:: Zaerr, Joe B., Lavender, Denis P., and Oregon State University. Forest Research Laboratory
Abstract:: The Dwight L. Phipps State Forest Nursery at Elkton annually supplies 22 million 2-0 Douglas-fir seedlings to Oregon land managers. Some managers report excellent success in planting, but others report failures, particularly when planting late in the season. In some instances poor survival seemed to be related to storage. Physiological...
Resource Type:: Technical Report
Full Text:: PLANTING 2-0 DOUGLAS-FIR IN OREGON A PRELIMINARY REPORT Joe. Zaerr Assistant Professor of Forest

Creator:: Hermann, Richard K., Ching, Kim K., and Oregon State University. Forest Research Laboratory
Abstract:: Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) is one of the world's most important and valuable timber trees. Its natural distribution in North America resembles an inverted V with uneven sides. From the apex in British Columbia, the western half extends along the Pacific mountain ranges into California for about 2,200 km...
Resource Type:: Technical Report
Full Text:: of Distinguishing Coastal from Interior Douglas Fir Seed." British Columbia Lumberman 44:26-30

Creator:: Lavender, Denis P., Overton, W. Scott, and Oregon State University. Forest Research Laboratory
Abstract:: The effects of a range of thermoperiods and soil temperatures upon growth of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings were studied. The seeds, of varieties glauca and menziesii, came from eight widely separated areas. Plants from both varieties made maximum growth with soil and air temperatures between 18 and 24...
Resource Type:: Technical Report
Full Text:: and root growth of seedlings grown from Douglas-fir seed collected in Arizona and British Columbia

Creator:: Ritchie, Martin W., Hann, David W., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: -fir Martin W. Ritchie David W. Hann FOREn REIEARCH LAB College of Forestry Oregon State University

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