Index Catalog // ScholarsArchive@OSU

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:: -N loss ranged from 19 to 68% vs. urea in the field, and 16 to 98% vs. urea in the laboratory

Substrate production of blueberry : evaluation of soilless media and potassium, nitrogen fertility on growth and nutrition

Creator:: Kingston, Patrick H.
Abstract:: As blueberry (Vaccinium sp.) production has increased in recent decades, a new interest has developed in the cultivation of blueberry in soilless substrate containers. Historically, blueberry has been propagated and grown in soilless substrate at nurseries, but nursery production is short in duration and plants are small relative to a...
Resource Type:: Masters Thesis
Full Text:: study evaluated 16 different mixtures of peat moss, coir, and perlite on one northern highbush

Soil Solarization in Pacific Northwest Tree Seedling Nurseries: Effects on Soilborne Plant Pathogens, Soil Nutrients and the Soil Microbiome

Creator:: Weidman, Clara S.
Abstract:: Nursery and greenhouse products are economically important agricultural commodities for Oregon and Washington. Nursery crops including tree seedlings can be damaged or killed by soilborne plant pathogens, which can be challenging to manage because of their persistence in soil and limited options for control. Soil solarization is a pre-planting soil...
Resource Type:: Masters Thesis

The Influence of Stormwater Water Quality on the Adsorption of Copper and Zinc onto Five Different Sorbents

Creator:: Kanalos, Casey A.
Abstract:: Best Management Practices (BMP) are widely used as a method for stormwater volume control in urban areas to prevent an overload of water on receiving water bodies and treatment facilities. BMPs ability to treat stormwater has gone under critical review in the last few decades, and their performance varies both...
Resource Type:: Masters Thesis
Full Text:: . Miller. WREP 125.) This is an ammonium replacement method where cation binding sites on a sorbent are

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:: ……………………..…………………………………….……… 16 Introduction……..………...……………………………………………… 17 Materials and Methods…………………………………………………… 19

Monitoring and Evaluating the Susceptibility of Colorado Potato Beetle, Leptinotarsa decemlineata Say, against Insecticides in the Columbia Basin of Northeastern Oregon

Creator:: Yang, Pahoua
Abstract:: Potato (Solanum tuberosum L.) is among one of the largest and most important staple food crops in the world. One of the most productive growing potato regions is the USA is the Oregon and Washington Columbia Basin. Both states produce approximately 26% of the USA potatoes in the market. In...
Resource Type:: Masters Thesis
Full Text:: the degree of Master of Science in Crop and Soil Science presented on December 16, 2019. Title

Breeding, Production, and Morphophysiology Among Cytotypes of Common and Portuguese Cherrylaurel

Creator:: Schulze, Justin A.
Abstract:: The common cherrylaurel (Prunus laurocerasus) and Portuguese cherrylaurel (P. lusitanica) are economically important landscape shrubs across the United States. To gain a better understanding of physiology and morphology in these higher level polyploids (P. lusitanica, 2n = 8x; P. laurocerasus, 2n =22x), a variety of breeding experiments were performed. The...
Resource Type:: Masters Thesis
Full Text:: lights at 90 µmol·m-2·s-1 at 22 to 25 °C with a 16-h photoperiod (0600 to 0000 HR) covered with clear

The Conservation Reserve Program : its impact on the economies of rural communities

Creator:: Nofziger, Sharon Dianne
Abstract:: The purpose of this thesis is to present the results of a study of the impacts of the Conservation Reserve Program, Title XII of the Food Security Act of 1985, on the economies of small communities located in Gilliam, Morrow and Umatilla Counties in Oregon. These counties are representative of...
Resource Type:: Masters Thesis
Full Text:: the Secretary 16 Payments Under CRP 17 Contracts 18 Base History 19 III SITUATION IN THREE

Weed, water, and nutrient management practices for organic blackberry during establishment

Creator:: Harkins, Renee H.
Abstract:: The study was conducted in an organic trailing blackberry (Rubus L. subgenus Rubus, Watson) planting established at the North Willamette Research and Extension Center in Aurora, OR on 26 May 2010. Three weed management systems were compared for 'Marion' and 'Black Diamond': 1) non-weeded; 2) hand-hoed two to three times...
Resource Type:: Masters Thesis
Full Text:: Abstract 7 Introduction 7 Materials and Methods 11 Results 16 Discussion 25 Conclusions 33

Influence of supplement composition on utilization of low-quality, cool-season forages by beef cattle

Creator:: McGuire, Dustin L.
Abstract:: Two studies were conducted to evaluate the influence of supplement composition on intake and digestibility of a low-quality (< 6% CP), cool-season forage, as well as cow performance. Treatments included a non-supplemented control (CON), corn (approximately 8% CP), corn and urea (LU = corn + 0.09 mg/kg BW urea, approximately...
Resource Type:: Masters Thesis
Full Text:: little to no impact at low levels. (Sanson and Clanton, 1989; Sanson et al., 1990). 16 1 6

ScholarsArchive@OSU

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

Substrate production of blueberry : evaluation of soilless media and potassium, nitrogen fertility on growth and nutrition

Soil Solarization in Pacific Northwest Tree Seedling Nurseries: Effects on Soilborne Plant Pathogens, Soil Nutrients and the Soil Microbiome

The Influence of Stormwater Water Quality on the Adsorption of Copper and Zinc onto Five Different Sorbents

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

Monitoring and Evaluating the Susceptibility of Colorado Potato Beetle, Leptinotarsa decemlineata Say, against Insecticides in the Columbia Basin of Northeastern Oregon

Breeding, Production, and Morphophysiology Among Cytotypes of Common and Portuguese Cherrylaurel

The Conservation Reserve Program : its impact on the economies of rural communities

Weed, water, and nutrient management practices for organic blackberry during establishment

Influence of supplement composition on utilization of low-quality, cool-season forages by beef cattle

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