Index Catalog // ScholarsArchive@OSU

Maturation of noble fir (Abies procera) and grand fir (Abies grandis) seed

Creator:: Snyder, Jeffrey L.
Abstract:: The objectives of this investigation were two-fold: (1) to examine possible seed and cone characteristics and their usefulness as seed maturity indices, and (2) to examine the effects of artificial ripening on seed maturation and germination. Cone fresh weight, cone length, cone specific gravity, cone color, seed fresh weight, seed...
Resource Type:: Masters Thesis

The concentration of nutrients in the tissue of ten white spruce provenances grown on an acid and a basic soil

Creator:: Gilbert, Roy C. A.
Abstract:: The experiment described in this paper was designed and carried out to study the ability of five provenances of white spruce of acid soil origin and five provenances of basic soil origin grown on an did and a basic soil to utilize and respond to the five macro-nutrient elements N,...
Resource Type:: Masters Thesis

Spot seeding Douglas-fir in the Pacific Northwest using a Finnish shelter seeding method

Creator:: Wolff, Scott
Abstract:: One of the largest problems facing the forester in the Pacific Northwest today is the economical, rapid rehabilitation of cut-over lands. Many of these cut-over lands are planted to Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco]. Previously, both aerial and spot seeding techniques have been evaluated for their efficiency in Douglas-fir regeneration....
Resource Type:: Masters Thesis

Photoperiodic responses of Douglas-fir (Pseudotsuga Menziesii (Mirb.) Franco) and Ponderosa pine (Pinus ponderosa) seedlings

Creator:: McCreary, Douglas D.
Abstract:: An important cultural tool in the greenhouse production of tree seedlings in the Pacific Northwest is the control of photoperiod. By artificially lengthening the period of daily exposure to light, it is possible to increase both the magnitude and duration of seedling growth. By shortening the photoperiod, one can induce...
Resource Type:: Masters Thesis

Nutrient cycling under 450-year-old Douglas-fir stands

Creator:: Abee, Albert
Abstract:: To investigate the movement of elements (N, P, k, Ca, and Mg) from the tree crowns by natural litterfall and leave wash, plots were established on six 450 year-old growth stands at the H. J. Andrews Experimental Forest. The following are the results of the data analyses. Elemental concentrations contained...
Resource Type:: Masters Thesis
Full Text:: , 7 Dr. Denis P. Lavender To investigate the movement of elements (N, P, k, Ca, and Ifg) from the

An anatomical study of the needles and hypocotyls of Douglas-fir seedlings grown under various environments

Creator:: Tucker, Richard Edward
Abstract:: Two seed sources of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings were grown under several environments in controlled growth chambers and in a natural environment. All seedlings were grown for six months and then harvested. One purpose of this study was to observe environmental influences on the anatomy of the needle....
Resource Type:: Masters Thesis

Physiological and anatomical studies of several groups of Douglas-fir (pseudotsuga menziesii (Mirb.) Franco) seedlings which demonstrated differential survival potential under drought stress

Creator:: Heiner, Terry Charles, 1941-
Abstract:: Several hundred two year old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings were planted in an enclosure designed to permit control of soil moisture. The seedlings came from five seed sources in southern Oregon and one seed source in northwestern Oregon. Mortality terminal and lateral budburst, and soil moisture were recorded...
Resource Type:: Masters Thesis

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

Nutritional requirements of the thin-leaved huckleberry (Vaccinium membranaceum Dougl.)

Creator:: Nelson, Eric Alan
Abstract:: Research was conducted on the effect of field fertilization with nitrogen on existing huckleberry fields. Research was also carried out in the greenhouse to ascertain the effects of various levels of nitrogen, phosphorus, and potassium in a nutrient solution arid the effect of the pH of the solution or growth...
Resource Type:: Masters Thesis

The relationship of abscisic acid concentration in Douglas-fir needles to seedling vigor

Creator:: Puttonen, Pasi Kalevi
Abstract:: A quantitative and predictive measure of seedling vigor during the regeneration chain would be of utmost help for forest regeneration work. This was the impetus to study the possibility of using abscisic acid (ABA) concentration of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) needles as an indicative measure of seedling vigor prior...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Maturation of noble fir (Abies procera) and grand fir (Abies grandis) seed

The concentration of nutrients in the tissue of ten white spruce provenances grown on an acid and a basic soil

Spot seeding Douglas-fir in the Pacific Northwest using a Finnish shelter seeding method

Photoperiodic responses of Douglas-fir (Pseudotsuga Menziesii (Mirb.) Franco) and Ponderosa pine (Pinus ponderosa) seedlings

Nutrient cycling under 450-year-old Douglas-fir stands

An anatomical study of the needles and hypocotyls of Douglas-fir seedlings grown under various environments

Physiological and anatomical studies of several groups of Douglas-fir (pseudotsuga menziesii (Mirb.) Franco) seedlings which demonstrated differential survival potential under drought stress

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

Nutritional requirements of the thin-leaved huckleberry (Vaccinium membranaceum Dougl.)

The relationship of abscisic acid concentration in Douglas-fir needles to seedling vigor

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