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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:: , J.C., D.M. Sullivan, D.A. Horneck, and G.H. Clough. 2011. Effect of irrigation rate on ammonia

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:: , Oregon Abstract approved: Donald A. Horneck Dan M. Sullivan Ammonia (NH3

Nutrient management and cycling in grass seed crops

Creator:: Horneck, Donald Arthur
Abstract:: Grass seed production in Oregon's Willamette Valley traditionally relied on open field burning for straw residue disposal and nutrient recycling. Changes in residue management from open field burning to methods that remove straw coincided with rapidly declining K soil test values. A survey of grass seed fields showed that many...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Donald A. Horneck for the degree

Reducing over-winter nitrogen loss

Creator:: Hart, John M., Horneck, Donald A., Sullivan, Dan M., and Christensen, Neil W.
Abstract:: Nitrogen can be lost when the quantity of available nitrogen exceeds crop demand or nitrogen availability is not in synchrony with crop demand. Either situation results in accumulation of available nitrogen, primarily in the nitrate form, at the end of the growing season. Over-winter nitrogen loss occurs primarily as nitrate-...
Resource Type:: Conference Proceeding
Full Text:: ., B.D. Brown, C.C. Shock, D.A. Horneck, R.G. Stevens, G.Q. Pelter, and E.B.G. Feibert. 2001. Nutrient

Needle Sampling Dates for Nutrient Evaluation in Christmas Tree Production

Creator:: Hart, J. M., Landgren, C. G., Moody, J. T., Fletcher, R. A., and Horneck, D. A.
Abstract:: Christmas tree needle sampling to evaluate nutrient need is an established practice. Data to support the recommended fall sampling time in Oregon and Washington was not found. In addition, the recommendation for needle sampling of Fraser fir in North Carolina was made without data from winter months. The goal for...
Resource Type:: Article
Full Text:: J.M. Hart 1 , C.G. Landgren 2 , J.T. Moody 3 , R.A. Fletcher 4 , and D.A. Horneck 5 1 Dept

Biosolids Increase Grass Yield, Grass Quality, and Soil Fertility in Dryland Pasture

Creator:: Sullivan, Dan M.
Abstract:: The purpose of this report is to document changes resulting from long-term application of biosolids to grazed dryland pasture. The report contains two chapters: • Chapter 1: Biosolids Increase Grass Yield and Quality in Dryland Pasture • Chapter 2: Biosolids Increase Soil Fertility in Dryland Pasture Data summarized here was...
Resource Type:: Technical Report
Full Text:: described in: Gavlak, R., D.A. Horneck, R.O. Miller, and J. Kotuby-Amacher. 2003. Soil, Plant and Water

Camelina: Seed Yield Response to Applied Nitrogen and Sulfur

Creator:: Wysocki, Donald J., Chastain, Thomas G., Schillinger, William F., Guy, Stephen O., and Karow, Russell S.
Abstract:: Camelina (Camelina sativa L. Crantz) has received worldwide attention in recent years as a biofuel crop and as a broadleaf option in cereal-based cropping systems. The objective of our 3-year study was to determine camelina seed yield and nitrogen use efficiency (NUE) as affected by six applied nitrogen (N) rates...
Resource Type:: Article
Full Text:: ://variety.wsu.edu/Updates/2004/PNW354_Agronomic_Zones_Dryland_PNW.pdf 335 Gavlak, R., Horneck, D.A., Miller, R.O

Field microplot estimates of soil N mineralization for manured and non-manured soils

Creator:: Sullivan, Dan M., Cogger, Craig G., Bary, Andrew I., and Myhre, Elizabeth
Abstract:: Credits for available N from past manure applications are often used in nutrient management planning. However, it is difficult to verify the accuracy of these credits. The major objective of this study was to estimate long-term effects of manure application on soil N mineralization. Specific objectives were to: 1) estimate...
Resource Type:: Conference Proceeding and Presentation
Full Text:: implemented for routine use for nitrogen management. References Gavlak, R.G., D.A. Horneck and R.O

Measuring ammonia loss using field-scale and laboratory techniques

Creator:: Heinrich, Aaron and Sullivan, Dan M.
Abstract:: Following the surface application of urea to soil, there is the potential for nitrogen (N) loss from ammonia (NH3) volatilization until sufficient rain or irrigation has moved it into the soil. Many studies measuring NH3 loss have used laboratory and microplot field studies. The limitation of these techniques is that...
Resource Type:: Conference Proceeding
Full Text:: . Holcomb, J.C., D.M. Sullivan, D.A. Horneck, and G.H. Clough. 2011. Effect of Irrigation Rate on Ammonia

Soil quality assessment of Willamette Valley soils and root colonization potential by arbuscular mycorrhizal fungi

Creator:: Allen, Natalie M.
Abstract:: Interest in measuring soil quality continues to increase worldwide in view of demands on land productivity and the necessity to preserve soil resources, yet identification of suitable indicators for soil quality assessment is still evolving. This study adapted 10 biological, physical, and chemical indicators of soil quality identified by the...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

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

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

Nutrient management and cycling in grass seed crops

Reducing over-winter nitrogen loss

Needle Sampling Dates for Nutrient Evaluation in Christmas Tree Production

Biosolids Increase Grass Yield, Grass Quality, and Soil Fertility in Dryland Pasture

Camelina: Seed Yield Response to Applied Nitrogen and Sulfur

Field microplot estimates of soil N mineralization for manured and non-manured soils

Measuring ammonia loss using field-scale and laboratory techniques

Soil quality assessment of Willamette Valley soils and root colonization potential by arbuscular mycorrhizal fungi

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