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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

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

Effects of boron rates and differential irrigation on bush green beans and cauliflower

Creator:: Grealish, William J.
Abstract:: Five boron rates and seven water levels were applied to bush green beans (Phaseolus vulqaris cv Oregon 91G) and to cauliflower (Brassica olereacea var. botrytis, cultivar "Snowball Y") in 1989 and 1990 to evaluate their effects on total yield of both crops and on outer quality, head hollowness and internal...
Resource Type:: Masters Thesis

Nitrogen mineralization from composted and fresh yard trimmings

Creator:: Nartea, Theresa J.
Resource Type:: Masters Thesis

Expansion of scouringrush (Equisetum spp. L.) : crop interference and control options in winter wheat (Triticum aestivum L.) and chemical fallow cropping cropping systems

Creator:: Kerbs, Blake D.
Abstract:: Scouringrushes (Equisetum hyemale L.; E. xferrissii Clute; E. laevigatum L.) are ancient perennial seedless vascular plants historically associated with wetlands, low-lying roadsides or field margins with more plant available water. There has been little research conducted on scouringrush species in the context of agricultural production because traditional farming practices confined...
Resource Type:: Masters Thesis
Full Text:: . Anderson, A.G. Hulting, D.A. Horneck and N.W. Christensen. 2013, Soil acidity in Oregon: understanding and

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:: . Altland, D.M. Sullivan, D.A. Horneck, and J. Cassidy. 2007. Chemical and physical properties of Douglas

Nutrient management of blackberry cultivars grown in organic production systems

Creator:: Fernandez-Salvador, Javier A.
Abstract:: The impact of fertilizer source and cultivar on growth, fruit quality, and yield was evaluated in organic blackberry (Rubus L. subgenus Rubus Watson) from 2011-2013 in three studies. In all studies, plants were drip irrigated, and weeds were managed using a woven polypropylene, permeable landscape fabric (weed mat). At a...
Resource Type:: Masters Thesis

Soil pH and calcium effects on nodulation of nursery grown red alder

Creator:: Crannell, Wanda K.
Resource Type:: Masters Thesis
Full Text:: .). New Forests 5, 35-42. Horneck D.A., Hart J.M., Topper K. and Koepsell B. (1989) In Methods of soil

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:: assisted with the greenhouse trial and with statistical analysis. Dr. Don A. Horneck proposed the

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

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

Effects of boron rates and differential irrigation on bush green beans and cauliflower

Nitrogen mineralization from composted and fresh yard trimmings

Expansion of scouringrush (Equisetum spp. L.) : crop interference and control options in winter wheat (Triticum aestivum L.) and chemical fallow cropping cropping systems

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

Nutrient management of blackberry cultivars grown in organic production systems

Soil pH and calcium effects on nodulation of nursery grown red alder

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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