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Competition among three pasture species under different levels of soil nitrogen and light intensity

Creator:: Wilson, Donald Benjamin
Resource Type:: Dissertation
Full Text:: Wileon L CKNOWLDEDGEMENTS The writer is indebted to Dr. W. S. McGuire, isaociate Professor of

The survival of rhizobia on seeds of Trifolium subterraneum L

Creator:: Radcliffe, John Clive
Abstract:: Field and laboratory tests were carried out to investigate the survival of the root-nodule bacterium, Rhizobium trifolii, when inoculated onto seeds of the pasture legume subterranean clover, (Trifolium subterraneum L.), in order to improve the nodulation and establishment of this plant in acid soils. Field experiments were carried out in...
Resource Type:: Dissertation
Full Text:: , Dr. W. S. McGuire, Associate Professor of Farm Crops, Oregon State University, for suggesting the

Factors affecting establishment, survival, and production of birdsfoot trefoil (Lotus corniculatus L.) and alfalfa (Medicago sativa L.)

Creator:: Cooper, Clee Scott
Abstract:: Field, greenhouse, growth chamber and laboratory experiments evaluated factors affecting establishment, survival and production of birdsfoot trefoil (Lotus corniculatus L.) and alfalfa (Medicago sativa L.) Field studies investigated the effects of a barley companion crop, seedling year harvest management and nitrogen and phosphorus fertilization upon stands, survival and subsequent production...
Resource Type:: Dissertation
Full Text:: major pro- fessor, Dr. W. S. McGuiie, and to the members of his graduate com- mittee, Dr. T. M. Ching

The physiology of seasonal growth in tall fescue varieties (Festuca arundinacea Schreb.)

Creator:: Blacklow, Warren Marcus
Abstract:: The winter and summer growth of varieties of tall fescue (Festuca arundinacea Schreb.) that had originated from the Mediterranean region (Oregon 1000 and Tunisia) and northern Europe (Alta) were studied outdoors in the Mediterranean climate of western Oregon, and in greenhouses and controlled environment chambers. Treatments of temperature, photoperiod and...
Resource Type:: Dissertation
Full Text:: Privacy W. S. McGuire The winter and summer growth of varieties of tall fescue (Festuca arundinacea

Alfalfa cutting management in the Columbia Basin

Creator:: Suttner, Donald Lee
Abstract:: Field studies to determine appropriate cutting management regimes consistent with yield, quality, and persistence of stand were conducted on several alfalfa varieties in the Columbia Basin region of Oregon. Two groups of treatments, including consecutive cuts at the same stage of maturity and cuts made at varying maturities, were imposed...
Resource Type:: Dissertation
Full Text:: BASIN Redacted for Privacy Abstract approved: W. S. McGuire Field studies to determine appropriate

An economic and ecological evaluation of velvetgrass, Holcus lanatus L

Creator:: Hart, Richard Harold
Resource Type:: Dissertation

Small sample parameter estimation for forced discrete linear dynamic models

Creator:: Stevens, Donald L.
Abstract:: The problem of estimating the parameters of a forced discrete linear dynamic model is considered. The system model is conceptualized to include the value of the initial state as a parameter. The forces driving the system are partitioned into accessible and inaccessible inputs. Accessible inputs are those that are measured;...
Resource Type:: Dissertation
Full Text:: ) + Bu(k) + 0w(k) . (1.1) Here z(k) is the pxl state vector at time k, u(k) and w(k) are vectors of

RFLP analyses of interspecific hybrids of Phaseolus

Creator:: Kuo, Mei
Abstract:: Gene transfer via interspecific hybridization within Phaseolus has been limited by abnormal hybrid development and the rapid loss of hybridity in subsequent generations. The most advanced embryo development occurs in P. vulgaris x P. coccineus where mature seeds form. However, the reciprocal cross still results in abnormal embryos unable to...
Resource Type:: Dissertation
Full Text:: suggesting selective transmission of P. vulgaris chromosome(s). RFLP Analyses of Interspecific Hybrids

Characterization of cytokinin metabolic enzymes from Phaseolus

Creator:: Dixon, Susan C.
Abstract:: An enzyme catalyzing the formation of O-glucosylzeatin in immature embryos of P. lunatus was purified 2500 fold using ammonium sulfate precipitation followed by affinity and anion exchange chromatography. The enzyme uses trans-zeatin as substrate (Km 28 uM) but not cis-zeatin. ribosylzeatin, or dihydrozeatin. Both UDP-glucose and UDP-xylose can serve as...
Resource Type:: Dissertation
Full Text:: Metabolic Enzymes from Phaseolus Abstract approved: ^„ ^ r;~. ,, ^ - . Dr. David W. S. Mok

Zeatin O-xylosyltransferase in Phaseolus vulgaris : immunological and molecular analyses

Creator:: Martin, Ruth C.
Abstract:: Cytokinins are a group of plant hormones mediating cell division and differentiation. Zeatin is a naturally occurring and highly active cytokinin that is rapidly metabolized in Phaseolus seeds. The metabolites and enzymes mediating the conversion have been studied extensively. Zeatin metabolic enzymes may be utilized in studying the regulation of...
Resource Type:: Dissertation
Full Text:: Phaseolus vulgaris: Immunological and Molecular Analyses Abstract approved: , ^6avid W. S. Mok

ScholarsArchive@OSU

Competition among three pasture species under different levels of soil nitrogen and light intensity

The survival of rhizobia on seeds of Trifolium subterraneum L

Factors affecting establishment, survival, and production of birdsfoot trefoil (Lotus corniculatus L.) and alfalfa (Medicago sativa L.)

The physiology of seasonal growth in tall fescue varieties (Festuca arundinacea Schreb.)

Alfalfa cutting management in the Columbia Basin

An economic and ecological evaluation of velvetgrass, Holcus lanatus L

Small sample parameter estimation for forced discrete linear dynamic models

RFLP analyses of interspecific hybrids of Phaseolus

Characterization of cytokinin metabolic enzymes from Phaseolus

Zeatin O-xylosyltransferase in Phaseolus vulgaris : immunological and molecular analyses

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