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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:: Douglas Fir and Western Hemlock Lumber Related to Density by Stanley Eugene Corder A THESIS submitted

Factors related to variation of specific gravity in young-growth Douglas fir

Creator:: McKimmy, Milford D. and Oregon Forest Research Center
Resource Type:: Technical Report
Full Text:: project. Factors Related to Variation of Specific Gravity in Young-Growth Douglas Fir* J\1. D

Root initiation and elongation in Douglas-fir, Pseudotsuga menziesii (Mirb.) franco, stem cuttings as related to bud and cambial activity

Creator:: Bhella, Harbans Singh
Abstract:: The relation of bud and cambial activity to root initiation and elongation in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stem cuttings was studied through two successive growth cycles. Stem cuttings of current season's growth were taken periodically from field-grown Douglas-fir trees to determine: (1) origin and development of root initials; and...
Resource Type:: Dissertation
Full Text:: . ) Franco, Stem Cuttings as Related to Bud and Cambial Activity by Harbans Singh Bhella A THESIS

Relationship Between Specific Gravity and Percentage of Summerwood in Wide-Ringed, Second-Growth Douglas-Fir

Creator:: Smith, Diana M.
Abstract:: For the sample of wide-ringed Douglas-fir discussed in this report, the relationship between specific gravity and percentage of summerwood is linear over a range of 16 to 60 percent summerwood content of the annual ring. The specific gravity of the summerwood and springwood portions of 96 dissected annual rings is...
Resource Type:: Technical Report
Full Text:: and summerwood . 1 -This report constituted part of a thesis submitted in partial fulfill- ment of

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:: transmission of Phellinus weirii in young-growth Douglas-fir AN ABSTRACT OF THE THESIS OF Keith Morgan

Regeneration patterns on some modified staggered-setting clearcuts on the H.J. Andrews experimental forest

Creator:: Franklin, Jerry F.
Abstract:: A survey of natural regeneration of Doug1as-fir and associated species was made on 15 staggered-setting cuttings four and five years after logging. These areas were on the H. J. Andrews Experimental Forest which is located in the McKenzie River area of western Oregon. Five types of cuttings were represented: (1)...
Resource Type:: Masters Thesis

Growth behavior of Douglas-fir reproduction in the shade of managed forest in the interior Coast Range of Oregon

Creator:: Del Rio, Ernest
Abstract:: During the past 20 years, repeated thinning of a Douglas-fir forest, now 65 years old, has allowed desired limits of basal area to be maintained. In the process, the understory environment has altered sufficiently to allow Douglas-fir reproduction to establish in abundance. The forest is located on the east side...
Resource Type:: Masters Thesis

A procedure for the purification and quantitation of abscisic acid : and its application to a study of abscisic acid concentrations in needles of cold stored Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings

Creator:: Bell, Thomas Evans
Abstract:: A rapid and efficient procedure that required no partitioning was developed for the purification of abscisic acid (AbA) from the needles of Douglas-fir seedlings. Extracted needle pigments were removed by a PVP column and the eluted AbA was concentrated on a DEAE column. The AbA was eluted from the DEAE...
Resource Type:: Masters Thesis

Developing an equation for making estimates of diameter inside bark at various heights up the stem in Douglas-fir

Creator:: Faqir Mohammad Khan
Abstract:: The purpose of this thesis was to develop a suitable multiple regression equation for making estimates of diameter inside bark at various heights up the bole in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)tree. Data on 237 and 302 trees from Black Rock Forest Management Research Area, Polk County, Oregon, and scattered...
Resource Type:: Masters Thesis

Abscisic acid levels in relation to stomatal behavior during drought and recovery in contrasting ecotypes of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

Creator:: Newville, Edward G.
Abstract:: Foliage of Douglas-fir seedlings [Pseudotsuga menziesii (Mirb.) Franco] from two contrasting environments was sampled during progressive stages of two consecutive cycles of induced drought for leaf resistance, plant water potential , and abscisic acid content (ABA). One group of seedlings was placed in a controlled environment room while another group...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

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

Factors related to variation of specific gravity in young-growth Douglas fir

Root initiation and elongation in Douglas-fir, Pseudotsuga menziesii (Mirb.) franco, stem cuttings as related to bud and cambial activity

Relationship Between Specific Gravity and Percentage of Summerwood in Wide-Ringed, Second-Growth Douglas-Fir

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

Regeneration patterns on some modified staggered-setting clearcuts on the H.J. Andrews experimental forest

Growth behavior of Douglas-fir reproduction in the shade of managed forest in the interior Coast Range of Oregon

A procedure for the purification and quantitation of abscisic acid : and its application to a study of abscisic acid concentrations in needles of cold stored Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings

Developing an equation for making estimates of diameter inside bark at various heights up the stem in Douglas-fir

Abscisic acid levels in relation to stomatal behavior during drought and recovery in contrasting ecotypes of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

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