Index Catalog // ScholarsArchive@OSU

Influences of the duration of periodic sway on the stem form development of four-year-old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

Creator:: Carlton, Ronald Roy
Abstract:: Stem form development of trees in response to wind has been established in the literature to be a response to stem sway induced by the wind. The response is manifested in modifications to height and diameter growth which strengthen the stem against wind stresses. Experiments in the literature show that...
Resource Type:: Masters Thesis
Full Text:: : Influences of the Duration of Periodic Sway on the Stem Form Development of Four-year-old Douglas-fir

Water relations, gas exchange, and growth responses of Douglas-fir seedlings to stresses associated with transplanting

Creator:: Joseph, Gladwin
Abstract:: The goal of this thesis was to determine the physiological mechanisms that link adverse preplanting treatments of Douglas-fir, such as exposure and root pruning, to the phenomenon of transplanting shock. The objective of experiments 1 and 2 was to measure the effect of exposure and pruning on the physiology and...
Resource Type:: Dissertation

Fall fertilization effects on Douglas-fir seedling quality

Creator:: Birchler, Todd M.
Abstract:: Coastal Douglas-fir (Psuedotsuga menziesii (Mirb.) Franco) 1 + 1 seedlings were fertilized with two types of fertilizers (NB4NO3+K2SO4 and (NH.4)2 SO4+KC1) at four rates (0, 80, 160, 320 kg N and K/ha) split over 3 application dates (September 19, October 13, November 1, 1996). By January 10, total Kjeldahl nitrogen...
Resource Type:: Masters Thesis
Full Text:: on Douglas-fir Seedling Quality. Signature redacted for privacy. Abstract approved: Robert W

The influence of ectomyorrhizae on drought tolerance characteristics of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) seedlings

Creator:: Dosskey, Michael G.
Abstract:: Douglas-fir seedlings were inoculated with different species of ectomycorrhizae-forming fungi in order to test the concept that ectomycorrhizae enhance the drought tolerance of seedlings and to investigate the mechanisms responsible for this effect. Seedlings were transplanted at age 6 to 8 weeks into pots containing pasteurized loam soil and inoculated...
Resource Type:: Dissertation
Full Text:: characteristics of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) seedlings AN ABSTRACT OF THE THESIS OF

The effects of nursery incurred tap-root wounds on growth of Douglas-fir seedlings

Creator:: Whiting, Elizabeth Cameron
Abstract:: Tap-root wounds frequently occur on seedlings during lifting in forest tree nurseries. Data are needed to clarify guidelines for culling wounded seedlings. Two-year-old bareroot Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings were wounded by hand on the tap-root to lengths of either 3/8, 1, or 3 inches. Wounded seedlings were used...
Resource Type:: Masters Thesis

Responses of Douglas-fir seedlings to various nursery handling and outplanting practices

Creator:: Graff, Joseph Edward
Abstract:: In study 111, four Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stocktypes (1-0, 2-0 standard nursery run and low density bareroot seedlings, and 1 year old container stock) were outplanted in a randomized incomplete block design to an old field in the Willamette Valley of Oregon in a factorial experiment t4 stocktypes...
Resource Type:: Masters Thesis

Size and survival of 2-0 Douglas-fir seedlings

Creator:: Zaerr, Joe B., Lavender, Denis P., and Oregon State University. Forest Research Laboratory
Abstract:: Results reported here are from a large study designed to evaluate the effects of certain nursery procedures on subsequent survival of Douglas-fir seedlings. The effects of storage conditions and lifting dates were reported elsewhere (9). The determination of the optimum size of seedling for planting on different sites has been...
Resource Type:: Technical Report
Full Text:: Size and Survival of 270 Douglas-Fir Seedlings Joe B. Zaerr Denis P. Lavender Research Paper 32

Early growth and drought avoidance in Douglas-fir seedlings

Creator:: Heiner, Terry Charles, 1941-, Lavender, Denis P., and Oregon State University. Forest Research Laboratory
Abstract:: Although the Douglas-fir region of the northwestern United States and British Columbia is frequently considered to have a common silviculture, obstacles to successful regeneration of the species range from competing vegetation and mammals on the mesic sites to extreme drought and heat on the xeric southerly exposures in northern California...
Resource Type:: Technical Report
Full Text:: 7/ 1 Early Growth and Drought Avoidance in Douglas-fir

Effects of seed characters and competitive environment on two-year performance of open-pollinated Douglas-fir families

Creator:: St. Clair, John Bradley
Abstract:: Ungerminated seed and recent germinants from 39 open-pollinated Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) families were planted in each of three competitive environments in order to determine the degree to which growth differences among families are influenced by competitive environment, seed weight, and date of emergence. The three competitive...
Resource Type:: Dissertation

The control of bud development in Douglas-fir seedlings by photoperiod, flurprimidol, and endogenous gibberellins and abscisic acid

Creator:: Graham, Jeff S.
Abstract:: The objective of this thesis was to evaluate the hypothesis that bud development of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings is controlled by endogenous gibberellins or abscisic acid and that cultural treatments affect bud development by altering levels of these growth regulators. To test this hypothesis, three experiments were conducted...
Resource Type:: Dissertation

ScholarsArchive@OSU

Influences of the duration of periodic sway on the stem form development of four-year-old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

Water relations, gas exchange, and growth responses of Douglas-fir seedlings to stresses associated with transplanting

Fall fertilization effects on Douglas-fir seedling quality

The influence of ectomyorrhizae on drought tolerance characteristics of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) seedlings

The effects of nursery incurred tap-root wounds on growth of Douglas-fir seedlings

Responses of Douglas-fir seedlings to various nursery handling and outplanting practices

Size and survival of 2-0 Douglas-fir seedlings

Early growth and drought avoidance in Douglas-fir seedlings

Effects of seed characters and competitive environment on two-year performance of open-pollinated Douglas-fir families

The control of bud development in Douglas-fir seedlings by photoperiod, flurprimidol, and endogenous gibberellins and abscisic acid

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