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Water hemlock [1974]

Creator:: Oregon State University. Extension Service, Washington State University. Extension Service, and University of Idaho. Agricultural Service
Abstract:: Published March 1974. A more recent revision exists. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Other
Full Text:: sectioned to show divisions, and "seed." 'Seed" magnified 4 diameters. PNW 109 March 1974 Water Hemlock

The physiology of dormancy of western hemlock (Tsuga heterophylla (Raf.) Sarg.) seedlings

Creator:: Nelson, Eric Alan
Abstract:: The physiology of dormancy of western hemlock (Tsuga heterophylla (Raf.) Sarg.) seedlings was examined. Many areas proved to exhibit similarities to those elucidated for Douglas-fir, although significant differences were also found and necessitate the use of caution in extrapolating data from one species to the other.. Dormancy of western hemlock...
Resource Type:: Dissertation

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

Site quality of western hemlock and chemical characteristics of some western Oregon andic soils

Creator:: Meurisse, Robert Thomas
Resource Type:: Dissertation
Full Text:: QUALITY OF WESTERN HEMLOCK AND CHEMICAL CHARACTERISTICS OF SOME WESTERN OREGON ANDIC SOILS Abstract

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

Test of western hemlock wildlings in brushfield reclamation

Creator:: Newton, Michael, 1932- and Oregon State University. Forest Research Laboratory
Abstract:: The response of western hemlock (Tsuga heterophylla [Raf.] Sarg.) to two methods of site preparation for planting was compared. One site was cleared of mature brush by the "brown-crush-and-burn" method. The other was partially cleared by spraying with herbicides. Seedlings lifted and planted in December, January, February, and April were...
Resource Type:: Technical Report
Full Text:: two major gaps in reforestation technology for western hemlock: (1) an inadequate basis for selecting

The influence of pre-harvest killing of western hemlock on subsequent stump invasion by Fomes annosus

Creator:: Laird, Peter Paul
Abstract:: This study concerns the effect of pre-harvest killing of commercial sized, forty year old western hemlock (Tsuga heterophylla (Raf.) Sarg.) on subsequent stump infection by Fomes annosus (Fr.) Karst. Further evaluations were made on tree drying, loosening of bark, wood deterioration and rate of crown and cambial death. Findings on...
Resource Type:: Dissertation

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

Utilization of western hemlock and western firs for poles and piles

Creator:: Ruppert, William J., Graham, R. D. (Robert D.), and Oregon State University. Forest Research Laboratory
Abstract:: The steadily increasing costs of raw materials, of the treated products, and of their replacement in service, as well as the steadily shrinking supply of preferred species, prompted a forum at Oregon State University on May 15, 1973 "to encourage the use of western hemlock and western fuss for poles...
Resource Type:: Technical Report
Full Text:: permeability to water and air of western hemlock cannot be used to esti- mate the drying characteristics of the

ScholarsArchive@OSU

Water hemlock [1974]

The physiology of dormancy of western hemlock (Tsuga heterophylla (Raf.) Sarg.) seedlings

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

Site quality of western hemlock and chemical characteristics of some western Oregon andic soils

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

Test of western hemlock wildlings in brushfield reclamation

The influence of pre-harvest killing of western hemlock on subsequent stump invasion by Fomes annosus

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

Utilization of western hemlock and western firs for poles and piles

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