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Natural regeneration on staggered settings

Creator:: Lavender, Denis P., Bergman, Morris H., and Calvin, Lyle David, 1923-
Abstract:: In recent years much of the logging in the Douglas fir region has been by the staggered setting system. Consequently, the effects of this system upon natural coniferous regeneration have become increasingly important. This study was designed to analyze the effects of setting size and environmental factors upon natural regeneration...
Resource Type:: Technical Report
Full Text:: statistical analysis of the field data. The results of the analysis indicated that: 1. There was no

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:: oriented root initials having no connection with the main vascular system. Continuous cell division

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:: , and in mature wood modulus of rupture. No differences were shown in pulp yield or kappa number due to

Proximate analysis of Douglas fir bark and characterization of the petroleum ether extract

Creator:: Weiser, Mortimer
Resource Type:: Masters Thesis
Full Text:: . whiter paper, and. these processes, even though machine costs wore by no means low, proved. to be

Habitat relationships of birds and young-growth Douglas-fir in northwestern California

Creator:: Marcot, Bruce G.
Abstract:: Ninety-one species of birds were surveyed in grass/forb, early and late shrub/sapling, pole, and medium sawtimber stages of young-growth Douglas-fir in northwestern California; patterns of bird distribution and abundance were related to habitat conditions and even-age silvicultural treatments. Seven species (band-tailed pigeon, western wood pewee, dusky flycatcher, western bluebird, fox...
Resource Type:: Dissertation
Full Text:: specialists showed no seasonal changes of distribution, or were more restricted in distribution during the

Ultrastructure of parenchyma and sclereids in Douglas-fir [Pseudotsuga menziesii(Mirb.)Franco] bark

Creator:: Dougal, Edward Francis
Abstract:: Because Douglas-fir [Pseudotsuga menziesii(Mirb.)Franco] bark is a raw material produced in our renewable forests along with wood, an understanding of the ultrastructure of bark cells is of paramount importance if wood technologists are to utilize the bark to the fullest potential. The objectives of this study were to develop microscopic...
Resource Type:: Dissertation
Full Text:: about one micrometer wide with little or no flaring out at the outer surface to form a pit chamber

Geographic and seasonal variation in photosynthetic efficiency and capacity of Rocky Mountain Douglas-fir, Pseudotsuga menziesii var. glauca

Creator:: Pope, Walter William
Abstract:: Net photosynthesis was measured for photosynthetic light efficiency and capacity on two-year-old plants from eight different seed sources in three measurement periods. The measurement periods corresponded to the physiological periods 1) prior to bud swelling, 2) after needle elongation, and 3) predormancy. Measurement period differences in both photosynthetic efficiency and...
Resource Type:: Dissertation
Full Text:: seedlings were raised and measured. There were no apparent differences with respect to seed-source

Strength and related properties of Douglas fir from mill samples

Creator:: Snodgrass, James D. and Noskowiak, Arthur F.
Resource Type:: Technical Report
Full Text:: exau1ple- -accordingly may have changed so much that available basic data no longer truly reflect the

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:: .402 .416 .419 7 108.0 23** .418 .405 .425 .442 8 125.5 12** .433 .423 .430 .423 * No low

The flavonoid compounds of three floral phenotypes of Douglas fir

Creator:: Highley, Terry L.
Resource Type:: Masters Thesis
Full Text:: found only in the red flowers. No differences were found between the male and female flowers of the

ScholarsArchive@OSU

Natural regeneration on staggered settings

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

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

Proximate analysis of Douglas fir bark and characterization of the petroleum ether extract

Habitat relationships of birds and young-growth Douglas-fir in northwestern California

Ultrastructure of parenchyma and sclereids in Douglas-fir [Pseudotsuga menziesii(Mirb.)Franco] bark

Geographic and seasonal variation in photosynthetic efficiency and capacity of Rocky Mountain Douglas-fir, Pseudotsuga menziesii var. glauca

Strength and related properties of Douglas fir from mill samples

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

The flavonoid compounds of three floral phenotypes of Douglas fir

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