Index Catalog // ScholarsArchive@OSU

Enhanced efficiency nitrogen fertilizers for nitrogen management in the Columbia Basin, Oregon

Creator:: Holcomb, Jess Charles
Abstract:: Ammonia (NH₃) volatilization can result in a substantial amount of surface applied nitrogen (N) being lost into the atmosphere, making it an environmental pollutant as well as reducing plant-available N. However, N can also be easily lost from the soil through leaching, and nitrous oxide (NO₂). Enhanced efficiency N fertilizers...
Resource Type:: Masters Thesis
Full Text:: . Western Nutrient Management Conference. Vol 7. Salt Lake City, UT. Vaio, N., M. L. Cabrera, D.E

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:: . Environmental impacts of potato nutrient management. Am. J. Potato Res. 82:321-328. Deans, S. G. and G

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:: plant. 3 Blueberry Nutrient Management Fertilizer N recommendations for

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:: an introduction to nutrient management, Sixth ed. Prentice Hall, Upper Saddle River, NJ. Lemunyon

Ammonia Volatilization from Nitrogen Fertilizers and Wastewater Reuse in the Columbia Basin

Creator:: Del Moro, Sarah K.
Abstract:: Ammonia (NH₃) volatilization and loss from nitrogen (N) fertilizer in agriculture negatively impacts crops, farm profitability, human health and surrounding ecosystems where it is deposited. A significant source of NH₃ volatilization occurs from surface application of urea on sandy soils with low pH buffering capacity such as those in the...
Resource Type:: Masters Thesis
Full Text:: volatilization. This study also confirmed the need to consider NH3 loss when reusing effluent as a nutrient

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:: sprinkler irrigation. 2005. Western Nutrient Management Conference. Vol. 6. Salt Lake City, UT. Sullivan

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:: growth and nutrient uptake, suggesting that gypsum application is a viable option for trial in the

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:: of field subplot management in 2001 to 2004 at Oregon State University Vegetable Research Farm, OR

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:: to the use of organic waste streams as nutrient sources is uncertainty of nitrogen (N) based

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

ScholarsArchive@OSU

Enhanced efficiency nitrogen fertilizers for nitrogen management in the Columbia Basin, Oregon

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

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

Phosphorus availability in biosolids-amended soils

Ammonia Volatilization from Nitrogen Fertilizers and Wastewater Reuse in the Columbia Basin

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

Cultural controls for suppressing Phytophthora cinnamomi root rot of blueberry

Nitrogen mineralization from organic amendments during the second year following application

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

Nitrogen mineralization from composted and fresh yard trimmings

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