Index Catalog // ScholarsArchive@OSU

Estimating plant-available nitrogen release from manures, composts, and crop residues

Creator:: Gale, Eric S.
Abstract:: In order to properly utilize organic amendments as nitrogen sources, reliable methods to estimate plant-available nitrogen (PAN) are needed. The objectives of this study were to (1) evaluate the use of crop and soil responses in fertilizer N equivalence (FNE) calculations, (2) examine the relationships between the C/N ratio, total...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Eric S. Gale for the degree of

Suitability of diverse composts as soil amendments for highbush blueberry (Vaccinium corymbosum L.)

Creator:: Costello, Ryan C.
Abstract:: Highbush blueberry (Vaccinium corymbosum L.) is adapted to soils with high organic matter and acidic pH. Composts provide organic matter and nutrients for growing blueberry in mineral soils, but many composts are high in pH and soluble salts. Acidification with elemental sulfur (S°) can remedy high pH, but the process...
Resource Type:: Masters Thesis
Full Text:: .) Abstract approved: Dan M. Sullivan Bernadine C. Strik

Nitrogen mineralization from organic amendments during the second year following application

Creator:: Kusonwiriyawong, Charirat
Abstract:: Estimates of nitrogen (N) available from long-term application of organic amendments are required to balance N inputs with crop N requirements. Two studies were conducted to (1) determine N mineralized from organic amendments (manures and composts) during year 2 after application, and (2) compare plant-available N (PAN) determined via in...
Resource Type:: Masters Thesis
Full Text:: . Sullivan Estimates of nitrogen (N) available from long-term application of organic amendments are

Estimating the dry matter production, nitrogen requirements, and yield of organic farm-grown potatoes

Creator:: McQueen, John Paul Gainer
Abstract:: As part of a participatory research project, where farmers and Oregon State University researchers collaborated, aspects of potato (Solanum tuberosum L.) growing systems were studied. It was determined through conversations with the farmers that quantification of certain growth parameters of potato was lacking, including dry matter accumulation, crop nitrogen (N)...
Resource Type:: Masters Thesis
Full Text:: -Grown Potatoes. Abstract approved: Dan M. Sullivan As part of a participatory research

Cultural controls for suppressing Phytophthora cinnamomi root rot of blueberry

Creator:: Yeo, John R.
Abstract:: Phytophthora cinnamomi is a soilborne pathogen that causes root rot disease of highbush blueberry (Vaccinium corymbosum L.). When new installations of susceptible blueberry cultivars are infected with P. cinnamomi, plants often fail to grow significant new tissue, greatly reducing yields over the life of the planting. Chemical fungicides are available...
Resource Type:: Dissertation
Full Text:: Blueberry Abstract approved: Dan M. Sullivan Phytophthora cinnamomi is a

Maturity and stability evaluation of composted yard debris

Creator:: Brewer, Linda J.
Abstract:: Compost maturity is an important determinant of end use for composted municipal yard debris, and generally refers to the effect the compost has on plants. The rate of microbial respiration is an indicator of compost stability. The objectives of this research were to: i) determine whether continuous aeration resulted in...
Resource Type:: Masters Thesis
Full Text:: . ------------------- Dan M. Sullivan Compost maturity is an important determinant of end use for composted municipal

Phosphorus availability in biosolids-amended soils

Creator:: Choate, Jeff
Abstract:: Quantifying labile phosphorus (P) pools in biosolids is needed to manage biosolids for both agronomic and environmental purposes. Phosphorus indices originated in an effort to protect surface water quality from-non-point-agricultural P inputs. The objectives of this research were to: (1) evaluate soil test components of the western Oregon P index...
Resource Type:: Masters Thesis
Full Text:: Biosolids-Amended Soils. Dan M. Sullivan Quantifying labile phosphorus (P) pools in biosolids is needed to

Nitrogen mineralization from composted and fresh yard trimmings

Creator:: Nartea, Theresa J.
Resource Type:: Masters Thesis
Full Text:: from Composted and Fresh Yard Trimmings Abstract approved: Dan M. Sullivan In western Washington

The effect of physical and hydraulic properties of peat moss and pumice on Douglas-fir bark based soil-less substrates

Creator:: Zazirska Gabriel, Magdalena
Abstract:: Douglas-fir [Pseudotsuga menziesii (Mirbel) Franco] bark (DFB), sphagnum peat moss, and pumice are the most common substrate components used in the Oregon nursery industry. Despite the widespread use of these three components, little information is available on the effect of physical and hydraulic properties of peat moss and pumice on...
Resource Type:: Masters Thesis
Full Text:: : Dan M. Sullivan Douglas-fir [Pseudotsuga menziesii (Mirbel

Improving Best Management Practices for Potato Production in the Columbia Basin : An Evaluation of Essential Oils for Control of Verticillium Wilt and the Fate of Chloride in the System

Creator:: Light, Sarah Elizabeth
Abstract:: Although the potato (Solanum tuberosum L.) is a global crop, few growing regions rival the high yields of the Columbia Basin of Eastern Oregon and Washington. Two research projects were conducted in Hermiston, OR to contribute to best management practices for the region. The first project evaluated the efficacy of...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________________________________ Dan M. Sullivan Philip B. Hamm Although the potato

ScholarsArchive@OSU

Estimating plant-available nitrogen release from manures, composts, and crop residues

Suitability of diverse composts as soil amendments for highbush blueberry (Vaccinium corymbosum L.)

Nitrogen mineralization from organic amendments during the second year following application

Estimating the dry matter production, nitrogen requirements, and yield of organic farm-grown potatoes

Cultural controls for suppressing Phytophthora cinnamomi root rot of blueberry

Maturity and stability evaluation of composted yard debris

Phosphorus availability in biosolids-amended soils

Nitrogen mineralization from composted and fresh yard trimmings

The effect of physical and hydraulic properties of peat moss and pumice on Douglas-fir bark based soil-less substrates

Improving Best Management Practices for Potato Production in the Columbia Basin : An Evaluation of Essential Oils for Control of Verticillium Wilt and the Fate of Chloride in the System

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