Index Catalog // ScholarsArchive@OSU

The effect of burrowing mammals on the hydrology of a drained riparian ecosystem

Creator:: Cassidy, James Richard
Abstract:: Many species of rodents and insectivores live in subterranean burrows in soils throughout the world. The soil surface perforations of burrow entrances are often connected to complex, subsurface tunnel networks. Burrow entrances and associated subsurface tunnel networks represent a link between surface and subsurface ecological function. Anecdotal observations of surface-water...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF James Richard Cassidy for the

Olives in Oregon: Grower Survey, On-Farm Propagation, and Orchard Establishment in a Non-Traditional Growing Region

Creator:: Barker, Tessa A.
Abstract:: Olive production potential in Oregon was researched in a multi-disciplinary approach, including a grower survey, a propagation greenhouse study, and a field study, from 2018 through 2020. The Oregon Olive Grower Survey was designed to collect information relating to orchard establishment and management practices, knowledge and understanding of these practices,...
Resource Type:: Masters Thesis
Full Text:: for their support in serving on my committee; James Cassidy, for re-invigorating my love of plants

Long-term Impacts of Nitrogen Fertilizer, Tillage and Crop Residue on Soil and Plant Nutrients in Winter Wheat Cropping Systems Under Dryland Conditions

Creator:: Shiwakoti, Santosh
Abstract:: Agricultural practices influence the nutrient dynamics of soil and plants, which may take more than a decade to be expressed in the drylands. The nutrient supplying capacity of soil is a crucial component of sustainable agriculture, and hence, this study can play an important role in policy making for the...
Resource Type:: Dissertation
Full Text:: inorganic N application rates, different tillage systems, and tillage timing on soil pH and on plant

Determining the Minimum Treatment Area and Importance of Soil Irrigation for Solarizing Soil Infested with Phytophthora spp.

Creator:: Bennett, Logan L.
Abstract:: Nurseries are an important part of the agriculture industry of the United States. The nursery industry provides ornamental, forest, restoration and specialty products to many markets in N. America. The disease sudden oak death, caused by Phytophthora ramorum, has devastating environmental and economic impacts on forested land, the urban-forest interface,...
Resource Type:: Masters Thesis
Full Text:: to many markets in N. America. The disease sudden oak death, caused by Phytophthora ramorum, has

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:: pumice (n=3).................................................................................... 22

Evaporation from bare soil and soil cracks: a numeric study

Creator:: Graham, Christopher Brian
Abstract:: Evaporation from bare soil was investigated using a numeric model In one set of simulations, texture and evaporative demand were analyzed as they impacted short and long term evaporation. The effect of these factors on water redistribution was also analyzed. A second set of simulations was run to determine the...
Resource Type:: Masters Thesis
Full Text:: permeability (above) and magnitude of van Genuchten parameter n (below). Figure 3: Soil Depth affected by

From atmospheric winds to fracture ventilation: Cause and effect

Creator:: Nachshon, Uri, Dragila, Maria, and Weisbrod, Noam
Abstract:: Vadose zone fractures and soil cracks exposed to the atmosphere have an impact on gas exchange processes at the Earth-atmosphere interface. In this study we explored and quantified the role of ground-surface winds on fracture ventilation. While the governing physical mechanisms that cause ventilation are relatively well understood, this is...
Resource Type:: Article
Full Text:: : Nachshon, U., M. Dragila, and N. Weisbrod (2012), From atmospheric winds to fracture ventilation: Cause and

2009 Seed production research at Oregon State University, USDA-ARS cooperating

Creator:: United States. Agricultural Research Service, Oregon State University. Department of Crop Science, and Young, William C.
Resource Type:: Other
Full Text:: Emeritus Department of Crop and Soil Science – OSU J.R. Cassidy, Instructor D.W. Curtis, Faculty

Spatial analysis of soil depth variability and pedogenesis along toposequences in the Troodos Mountains, Cyprus

Creator:: Robins, Colin R.
Abstract:: In unstable landscapes, modern pedological research explores the role of soils as products and indicators of geomorphologic change. Understanding the dynamics of hill slope pedogenesis is especially important in regions with limited, poor, or threatened soil resources. The island of Cyprus, situated in the eastern Mediterranean, is claimed by many...
Resource Type:: Masters Thesis
Full Text:: departmental dilemmas; to John Baham, James Cassidy, and Herb Huddleston for their love of knowledge and

Migration of E. coli and solutes to tile drains via preferential and matrix flow

Creator:: Moreno, Daniel
Abstract:: The extent of agricultural drainage has created concern for its potential undesirable effects on surface water quality. Land applications of liquid manure on tile drain fields have the potential to transport solutes and bacteria to the drains following precipitation or irrigation events and many times are directly sent to a...
Resource Type:: Masters Thesis
Full Text:: Fernandez, for general guidance; Michael Rogers and James Cassidy, for the use of the magnetometor data and

ScholarsArchive@OSU

The effect of burrowing mammals on the hydrology of a drained riparian ecosystem

Olives in Oregon: Grower Survey, On-Farm Propagation, and Orchard Establishment in a Non-Traditional Growing Region

Long-term Impacts of Nitrogen Fertilizer, Tillage and Crop Residue on Soil and Plant Nutrients in Winter Wheat Cropping Systems Under Dryland Conditions

Determining the Minimum Treatment Area and Importance of Soil Irrigation for Solarizing Soil Infested with Phytophthora spp.

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

Evaporation from bare soil and soil cracks: a numeric study

From atmospheric winds to fracture ventilation: Cause and effect

2009 Seed production research at Oregon State University, USDA-ARS cooperating

Spatial analysis of soil depth variability and pedogenesis along toposequences in the Troodos Mountains, Cyprus

Migration of E. coli and solutes to tile drains via preferential and matrix flow

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