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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:: -Fir R. D. Gya am R. L. Krahmer Three methods--radial compression strength, color indicators of

Cambial divisions in Pseudotsuga menziesii

Creator:: Sisson, Warren Elmer, Jr.
Abstract:: Mitotic activity in the vascular cambium was determined from ten samples from a single internode in each of four Douglas-fir [(Pseudotsuga menziesii (Franco.) Mirb.)]trees. Counts of interphase and mitotic nuclei from nine cores in each sample piece were averaged and expressed as the frequency and mitotic index. The sampling error...
Resource Type:: Masters Thesis
Full Text:: major professor, and to Robert A. Gregory, research forester, for their advice and assistance during

The effect of forest stand thinning on selected strength and pulp-ing characteristics of Douglas-fir

Creator:: Johnson, Donna A.
Abstract:: The purpose of this study was to determine if amount and kind of thinning had an effect on wood specific gravity, modulus of rupture, modulus of elasticity, growth rate, or pulp yield and kappa number. The study involved 24 1/5-acre plots, three plots in each of eight thinning treatments. The...
Resource Type:: Masters Thesis
Full Text:: for juvenile wood and -0.219 for mature wood For the wedge specific gravity and basal area the r

Some anatomical features of Douglas-fir wood rated permeable and refractory

Creator:: Krahmer, Robert Lee
Resource Type:: Masters Thesis
Full Text:: , for providing the study samples; and to Professor J. C. R. LI. for assistance in statistics. SOME

Early stages in plant succession on Douglas fir clearcuts on the Mary's Peak watershed near Corvallis, Oregon

Creator:: Brown, Eugene Allen
Abstract:: This study has been concerned with the patterns of vegetative changes which occur during the first five years following logging and burning on Douglas-fir clear cuts. Knowledge of the successional sequence in the coastal forests of western Oregon is of primary importance to those concerned with the management of this...
Resource Type:: Masters Thesis
Full Text:: -111411r441.14:0-4.--, . w C fat Ft! V.' .°4 ., 'VV, ,.e i. ° r 4, ,- ._ i : 111"'° 10

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

Phospholipids in germinating Douglas fir seed

Creator:: Chung, Wei-Kwo
Abstract:: Information concerning the kinds and composition of phospholipids in gymnosperm plants is negligible in the literature. Thus this study was undertaken to provide background knowledge for future comparative biochemical investigations. In this study, lipid was extracted by chloroform and methanol, and washed with distilled water to prevent the possible formation...
Resource Type:: Masters Thesis
Full Text:: (Degree) Farrn Crops (Narne) (Maj or ) "r ! Date thesis is presented _ ii\r$l^, \-< * \(iLf I Titlc

Fungi associated with Douglas-fir seed during cone development, seed processing, and storage

Creator:: Gordon, Lewin Roland
Abstract:: The Pacific Coast form of Douglas-fir in natural forest succession is an intermediate species thriving in the Coast Range and Cascade Mountains of the Pacific Northwest. This species constitutes 26 percent of the standing timber in the United States, and 24 percent of the nation's annual timber harvest. Characteristics of...
Resource Type:: Masters Thesis
Full Text:: . Grateful appreciation is also extended to Dr. R. V. Frakes for reviewing the statistical portions of

Indentation hardness of Douglas fir and Western hemlock lumber related to density

Creator:: Corder, Stanley E.
Abstract:: Indentation hardness tests were made on sections of 211 pieces of Douglas fir and 208 pieces of Western hemlock at a moisture content of about 11 percent. Specific gravity and visual-density evaluations were also determined. Correlation coefficients for linear regression of density, as measured by specific gravity, on average standard...
Resource Type:: Masters Thesis
Full Text:: . 10. Markwardt, L. J. and T. R. C. Wilson. Strength and related properties of woods grown in the

An econometric analysis of demand and supply relationships in the Douglas fir plywood industry

Creator:: Simpson, Robert Sanford
Resource Type:: Masters Thesis
Full Text:: are taken from R. H. Buskirk, (11, Chapter 1)Buskirk cites C. G. Ceram, Gods, Gr,ves, and Scholars

ScholarsArchive@OSU

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

Cambial divisions in Pseudotsuga menziesii

The effect of forest stand thinning on selected strength and pulp-ing characteristics of Douglas-fir

Some anatomical features of Douglas-fir wood rated permeable and refractory

Early stages in plant succession on Douglas fir clearcuts on the Mary's Peak watershed near Corvallis, Oregon

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)

Phospholipids in germinating Douglas fir seed

Fungi associated with Douglas-fir seed during cone development, seed processing, and storage

Indentation hardness of Douglas fir and Western hemlock lumber related to density

An econometric analysis of demand and supply relationships in the Douglas fir plywood industry

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