Index Catalog // ScholarsArchive@OSU

Growth and moisture relations of western hemlock seedlings as affected by root or shoot disturbance

Creator:: Morris, John W. (John William), 1954-
Abstract:: The need for increased efficiency in regeneration of western hemlock (Tsuga heterophylla (Raf.) Sarg.) requires greater understanding of seedling physiology. Experiments examined western hemlock seedling growth responses to in-bed root pruning, and pruning of shoots or roots prior to transplanting. Measurement of plant moisture stress (PMS) after physical root disturbance,...
Resource Type:: Masters Thesis

Patterns of growth and seasonal changes in the concentrations of abscisic acid and indoleacetic acid in roots of western hemlock

Creator:: Brown, Charles Joseph
Abstract:: The capacity for root growth and concentration of indole-3-acetic acid and abscisic acid in the roots of western hemlock seedlings was investigated. The root regenerating capacity (RRC) was defined as the increase in root length, greater than 5 mm, following a 28-day test period. RRC measurements over a two-year period...
Resource Type:: Masters Thesis
Full Text:: growth and concentration of indole-3- acetic acid and abscisic acid in the roots of western hemlock

Transformation of Western Hemlock Tree Crowns by Dwarf Mistletoe

Creator:: Calkins, Stephen J.
Abstract:: Hemlock dwarf mistletoe (Arceuthobium tsugense subsp. tsugense) is an arboreal, hemiparasitic plant that principally parasitizes western hemlock (Tsuga heterophylla). Hemlock dwarf mistletoe exerts a profound influence on infected trees that can drastically change the structure of the tree crown due to reduced growth, top dieback, branch deformation and death, resulting...
Resource Type:: Masters Thesis
Full Text:: decrease the efficiency of western hemlock foliage and affect the water transport efficiency of infected

Effect of high temperature drying on bending and shear strengths of western hemlock

Creator:: Thiam, Massamba
Abstract:: The advantages of high-temperature drying are faster drying, reduced inventory, reduced energy requirements, and reduced equilibrium moisture content. However the disadvantages are higher initial costs of the kiln, greater power needs, knot dropout, and reduction in some strength properties. The latter was the subject of this study. Three hundred pieces...
Resource Type:: Masters Thesis
Full Text:: of High Temperature Drying on Bending and Shear Strengths of Western Hemlock. Michael R. Milota

Steady- and unsteady-state longitudinal water permeability of western hemlock

Creator:: Lancaster, Eugene Peter
Abstract:: A decreasing rate of flow was observed (after sufficient air and particulate matter were removed from the wood and water) under steady-state conditions for green western hemlock sapwood. The decrease is theorized to be due to viscoelastic behavior of pit membranes. An unsteady-state procedure for determining longitudinal liquid permeability of...
Resource Type:: Masters Thesis

Root regeneration potential in Douglas fir and Western hemlock seedlings : the role of environmental factors and current photosynthesis

Creator:: Thompson, Barbara Ellen
Abstract:: Three experiments were conducted on containerized seedlings to examine the short-term and long-term effects of environment on the root regeneration potential, and to examine the fate of the current photosynthate and its relationship to the root regeneration potential. The short-term effects were studied first in a 3x3x2 factorial experiment comprising...
Resource Type:: Masters Thesis

Animal damage, vegetative competition and growth of western hemlock seedlings in the Coast Range of Oregon

Creator:: Hyatt, Joan Marie
Abstract:: The growth of western hemlock during the first four years of seedling establishment was examined in a competitive environment in which seedlings were exposed to various types of animal damage and salmonberry and/or alder competition. The study utilized an existing Nelder/replacement series experiment which focused on the competitive effects among...
Resource Type:: Masters Thesis

Early genetic selection for wood stiffness in juvenile Douglas-fir and western hemlock

Creator:: Urhan, Oguz S.
Abstract:: Wood modulus of elasticity (MOE), also known as wood stiffness, is one of the most important wood properties. Wood stiffness is a measure of the resistance to deflection, and is important because some products such as laminated veneer lumber, plywood, and dimension lumber require stiff and strong wood. Incorporating wood...
Resource Type:: Masters Thesis
Full Text:: Douglas fir and Western Hemlock. AN ABSTRACT OF THE THESIS OF Oguz S. Urhan for the degree 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:: ) Title: INDENTATION HARDNESS OF DOUGLAS FIR AND WESTERN HEMLOCK LUMBER RELATED TO DENSITY Abstract

Diameter yield tables versus site-index yield tables for western hemlock

Creator:: Newport, Carl A., 1924-
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Growth and moisture relations of western hemlock seedlings as affected by root or shoot disturbance

Patterns of growth and seasonal changes in the concentrations of abscisic acid and indoleacetic acid in roots of western hemlock

Transformation of Western Hemlock Tree Crowns by Dwarf Mistletoe

Effect of high temperature drying on bending and shear strengths of western hemlock

Steady- and unsteady-state longitudinal water permeability of western hemlock

Root regeneration potential in Douglas fir and Western hemlock seedlings : the role of environmental factors and current photosynthesis

Animal damage, vegetative competition and growth of western hemlock seedlings in the Coast Range of Oregon

Early genetic selection for wood stiffness in juvenile Douglas-fir and western hemlock

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

Diameter yield tables versus site-index yield tables for western hemlock

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