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The effect of drought on the rate of photosynthesis, respiration, and transpiration in two ecotypes of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

Creator:: Zavitkovski, J.
Abstract:: The subject of this study was the determination of the changes in photosynthesis, respiration and transpiration in two ecotypes of Douglas-fir as caused by decreasing soil moisture content. The photosynthetic rate was also correlated with the relative turgidities of needles. All the above processes were greatly affected by decreasing soil...
Resource Type:: Masters Thesis
Full Text:: as introduced by Werner (34, p. 4). Depending on the size of the seedling, from 12 to 20 needles

Hydrotropic pulping of the bark from Douglas fir (Pseudotsuga menziesii (Mirb.) franco) and the characterization of the resulting "bark phenolic acid"

Creator:: Lenz, Bernard L.
Resource Type:: Masters Thesis
Full Text:: Gloria M. Merideth Redacted for Privacy Redacted for Privacy Redacted for Privacy Redacted for

Root initiation and differentiation in Pseudotsuga menziesii (Mirbel) Franco

Creator:: Bogar, Gerald Dale
Abstract:: Tissue differentiation of the primary root and its associated laterals is reported. Secretory elements are the first of the primary tissues to mature. They appear to be located between the precursory phloem and pericycle in the primary root, but are more closely associated with the pericycle in long lateral roots....
Resource Type:: Masters Thesis
Full Text:: menziesii (Mirbel) franco AN ABSTRACT OF THE THESIS OF GERALD GERALD DALE BOGAR for the M. S. in BOTANY

Factors affecting inter-tree root contact and the transmission of Phellinus weirii in young-growth Douglas-fir

Creator:: Reynolds, Keith M.
Abstract:: Groups of second-growth Douglas-fir (Mirb.) Franco were excavated in plots of two to six trees on two sites in the vicinity of Cowichan Lake, Vancouver Is., British Columbia. Eleven excavation plots provided 36 trees which could be studied in pairs (a total of 50 pairs) in order to ascertain the...
Resource Type:: Masters Thesis
Full Text:: PHELLINUS WEIRII IN YOUNG-GROWTH DOUGLAS-FIR Abstract approved: Redacted for Privacy tverett M. Hansen

Water relations and the root regeneration response of Douglas-fir

Creator:: Cobb, Cheryl Anne
Abstract:: The effect of lifting date and root-pruning treatments on water potential, root regeneration, and shoot growth of six-month-old and three-year-old Douglas-fir seedlings bare-root transplanted into a growth chamber, and sawdust bed, respectively, was studied. Root growth in six-month-old and three-year-old seedlings was highest in February and August respectively. Survival was...
Resource Type:: Masters Thesis
Full Text:: THE ROOT REGENERATION RESPONSE OF DOUGLAS-FIR Abstract approved^ Leslie H. Fuchigami The

Comparison of Phellinus weirdi root rot damage in a 60-year-old Douglas-fir (Pseudotsuga menziesii) stand with the damage in the preceding old-growth stand

Creator:: Tkacz, Borys M.
Abstract:: Laminated root rot of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) caused by the fungus Phellinus weirii (Murr.)Gilbertson was studied in two successive stands in the Oregon Coast Range. Damage due to the disease in a 60-year-old second-growth stand was compared with incidence in the preceding 300-year-old stand on the same site....
Resource Type:: Masters Thesis
Full Text:: northern slope at about 500 m. The average DBH was 34-35 cm with a density of 860 trees/ ha. The

Effect of thinning and fertilization on wood properties and intra-ring characteristics in young Douglas-fir

Creator:: Bodner, Josef
Abstract:: The purpose of this study was to determine if thinning, fertilization or a combination of thinning and fertilization had an effect on overall average specific gravity, modulus of elasticity, modulus of rupture, fiber length and intra-ring characteristics. Material for this experiment consisted of 7 trees randomly selected from each of...
Resource Type:: Masters Thesis
Full Text:: growth pattern was also shown by Reukema and Pienaar (35) and Reukema and Bruce (34). Brix (4) found

Evaluating radial compression, color indicator and micro-toughness tests to detect early decay in Douglas-fir

Creator:: Smith, Susan M.
Abstract:: Three methods--radial compression strength, color indicators of decay and micro-toughness, an examination of tracheid fracture patterns, were evaluated for detection of early decay and for application to field use. Three-eighth-inch diameter plugs 3/4-inch long, cut from the sapwood and heartwood of a Douglas-fir pole free of decay, were decayed by...
Resource Type:: Masters Thesis
Full Text:: series were located about 1-1/4 inches apart longitudinally so that matched pairs of specimens con

Chemical suppression of a perennial ryegrass (Lolium perenne) living mulch and influence of ground cover management on growth of 'Chardonnay' wine grapes (Vitis vinifera) and Douglas fir Christmas trees (Pseudotsuga menziesii)

Creator:: Brenner, Loretta K.
Resource Type:: Masters Thesis
Full Text:: -2-(4-{[5-(tri f1uoromethyl-2-pyri di nyl]oxy}phenoxy)pro- panoate}, fluazifop-P-butyl {(R)-butyl-2

Nutrient cycling under 450-year-old Douglas-fir stands

Creator:: Abee, Albert
Abstract:: To investigate the movement of elements (N, P, k, Ca, and Mg) from the tree crowns by natural litterfall and leave wash, plots were established on six 450 year-old growth stands at the H. J. Andrews Experimental Forest. The following are the results of the data analyses. Elemental concentrations contained...
Resource Type:: Masters Thesis
Full Text:: o ak f o re st 2 .9 2 -3 .4 8 H ey w ar d & B a rn e tt e 19 34 F lo ri

ScholarsArchive@OSU

The effect of drought on the rate of photosynthesis, respiration, and transpiration in two ecotypes of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

Hydrotropic pulping of the bark from Douglas fir (Pseudotsuga menziesii (Mirb.) franco) and the characterization of the resulting "bark phenolic acid"

Root initiation and differentiation in Pseudotsuga menziesii (Mirbel) Franco

Factors affecting inter-tree root contact and the transmission of Phellinus weirii in young-growth Douglas-fir

Water relations and the root regeneration response of Douglas-fir

Comparison of Phellinus weirdi root rot damage in a 60-year-old Douglas-fir (Pseudotsuga menziesii) stand with the damage in the preceding old-growth stand

Effect of thinning and fertilization on wood properties and intra-ring characteristics in young Douglas-fir

Evaluating radial compression, color indicator and micro-toughness tests to detect early decay in Douglas-fir

Chemical suppression of a perennial ryegrass (Lolium perenne) living mulch and influence of ground cover management on growth of 'Chardonnay' wine grapes (Vitis vinifera) and Douglas fir Christmas trees (Pseudotsuga menziesii)

Nutrient cycling under 450-year-old Douglas-fir stands

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