Index Catalog // ScholarsArchive@OSU

Soil organic matter management and root health

Creator:: Darby, Heather
Abstract:: Annual applications of fresh or composted dairy manure were assessed for their effects on root rots of sweet corn and snap bean and damping-off of cucumber in a field soil. Soil biological and physical properties were measured as possible indicators of root rot suppressive potential. Regardless of amendment type or...
Resource Type:: Dissertation
Full Text:: Management and Root Health. Alexandra G. Stone Annual applications of fresh or composted dairy manure were

Influence of nitrogen form ratio and calcium on greenhouse and field performance of watermelon

Creator:: Lamb, Michael J.
Abstract:: Watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai var. Crimson Sweet) was seeded in a commercial peat mix in multicell containers (72 cells-tray⁻¹, 40 cm³-cell⁻¹) in July 1989 and April 1990. In 1989, the medium was amended with CaC0₃ at 10% w:v. In 1990, no CaC0₃ amendment was made. Watermelon seedling...
Resource Type:: Masters Thesis
Full Text:: along the way. I am indebted to my committee members Drs. Del Hemphill and Mary Powelson for their

Effects of nitrogen source, rate and a nitrification inhibitor on soil nitrogen status and mineral composition of strawberry

Creator:: Marion, Carol I.
Abstract:: Three rates of urea, urea-DCD, and NH₄N0₃ were soil applied in April and August 1986 to strawberry selection OR-US 4930 and cultivar 'Sumas' to determine effects of the nitrification inhibitor dicyandiamide (DCD) and nitrogen source and rate on soil NH₄ and N0₃ levels, fruit yield and quality, and mineral composition...
Resource Type:: Masters Thesis
Full Text:: Righetti and Mary Powelson for their advice and guidance. They were a pleasure to work with. Many

Nuclear and chloroplast diversity of Pacific Northwest wheat (Triticum aestivum) breeding germplasm

Creator:: Edwards, Melanie Love
Abstract:: Wheat breeders must effectively maintain and manage existing genetic diversity in order to continue the development of superior genotypes. It is therefore fundamental that the genetic relationships and diversity within the germplasm pools be thoroughly characterized and understood. Recently, DNA-based markers have provided powerful tools for genetic diversity analysis. This...
Resource Type:: Masters Thesis
Full Text:: . Mary Powelson for serving on my committee. I would also like to thank Christy Watson for the hours of

Influence of site, soil, and inoculum density on dwarf bunt (Tilletia controversa Kühn) of winter wheat

Creator:: Clark, Deborah Ann, 1954-
Abstract:: Field microplot studies conducted over two seasons (1982-1984) evaluated the influence of four physically and chemically diverse soils collected from Pacific Northwest wheat fields on the incidence of dwarf bunt of winter wheat caused by Tilletia controversa Kuhn. These soils were placed at Flora and Pendleton, Oregon to determine the...
Resource Type:: Masters Thesis
Full Text:: after they were mixed with 5 rates of inoculum (0.0 - 20 g T. controversa teliospores/45 kg of soil

Characterization of indigenous Rhizobium leguminosarum bv. trifolii isolated from annual and perennial species of Trifolium

Creator:: Dashti, Narjes Haje
Resource Type:: Masters Thesis
Full Text:: the five serotypes (G collection). A small number of isolates, antigenically unrelated to the five

Cephalosporium stripe of wheat : seedling-based resistance screening and pathogenic variability

Creator:: Cowger, Christina
Abstract:: Cephalosporium stripe of wheat (Triticum aestivum), caused by the soilborne fungus Cephalosporium gramineum, results in significant yield reductions in dryland winter wheat crops of the U.S. Pacific Northwest. The development of resistant cultivars offers the best hope for disease control. Breeding for resistance is hampered by the long trial times...
Resource Type:: Masters Thesis
Full Text:: Mary Powelson provided careful and very useful feedback on the thesis as a whole. I also thank

Evaluation of Vitis rootstocks for tolerance to low soil pH

Creator:: Taylor, Patrick Andrew
Abstract:: The purpose of this study was to determine the relative tolerance of grafted Vitis rootstocks to low soil pH. In this capacity, the data may be pooled with results from previous investigations to increase the overall aptitude profile of Vitis rootstocks. A potential application of this information is that the...
Resource Type:: Masters Thesis
Full Text:: . Mary Powelson. It should be known that I am grateful for the advise and efforts of Steve Castignoli

Influence of genetic factors and pollination on fruit firmness in parthenocarpic and nonparthenocarpic pickling cucumbers

Creator:: Cook, Kevin L., 1967-
Abstract:: A concern which has restricted the use of parthenocarpic pickling cucumbers in the United States has been firmness of fruit processed by brining. Fruit firmness and defects of parthenocarpic and nonparthenocarpic pickling cucumbers were evaluated in 1992 and 1993. Fruits were produced with or without pollination by growing plants with...
Resource Type:: Dissertation
Full Text:: assistance and help with the donor allele analysis, Dr. Mary Powelson for serving as my minor professor

Characterization of an architectural mutant of bean (Phaseolus vulgaris, L.)

Creator:: Guner, Nihat
Abstract:: Genetic and morphological characteristics of an architectural mutant in common beans were studied. The mutant had shiny, dark green leaves, overlapping leaflets, short petioles and a reproductive terminal bud even though the line did not carry the fin gene. Branching was nearly absent resulting in a single stem vine. This...
Resource Type:: Masters Thesis
Full Text:: . Charles Boyer, Dr. Alvin Mosley, and Dr. Mary Powelson for their contributions to this thesis, their

ScholarsArchive@OSU

Soil organic matter management and root health

Influence of nitrogen form ratio and calcium on greenhouse and field performance of watermelon

Effects of nitrogen source, rate and a nitrification inhibitor on soil nitrogen status and mineral composition of strawberry

Nuclear and chloroplast diversity of Pacific Northwest wheat (Triticum aestivum) breeding germplasm

Influence of site, soil, and inoculum density on dwarf bunt (Tilletia controversa Kühn) of winter wheat

Characterization of indigenous Rhizobium leguminosarum bv. trifolii isolated from annual and perennial species of Trifolium

Cephalosporium stripe of wheat : seedling-based resistance screening and pathogenic variability

Evaluation of Vitis rootstocks for tolerance to low soil pH

Influence of genetic factors and pollination on fruit firmness in parthenocarpic and nonparthenocarpic pickling cucumbers

Characterization of an architectural mutant of bean (Phaseolus vulgaris, L.)

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