Index Catalog // ScholarsArchive@OSU

Duration of saturation and redox potentials in selected Willamette Valley soils

Creator:: Austin, Will
Resource Type:: Masters Thesis
Full Text:: of Saturation 2 Classifying Soil Moisture Conditions 4 Piezometers and Tensiometers 4 Reduction

Water and solute transport : modeling and application to water conservation in layered soil

Creator:: Mohammed, Fareed H. A. N.
Abstract:: Sandy soils are among the least productive soils because of their inability to store adequate water for plant growth. Their high percolation rate not only allows water to move quickly beyond the root zone, but also washes nutrients below the reach of plant roots. High evaporation occurs from the soil...
Resource Type:: Dissertation
Full Text:: potential. The soil water potential is related to soil water content as illustrated in the soil moisture

Effects of Initial Moisture and Surface Properties on Sorptivity of Coarse Soil and Sand

Creator:: Ambrowiak, Gloria M.
Abstract:: Many different models and mechanisms of water imbibition into soil have been described in the literature. Theoretical equations based on those models exist to predict how water will flow in porous media. These models can be useful, but have their weaknesses. Research on imbibition and infiltration into soils has mostly...
Resource Type:: Masters Thesis

Exploring mechanisms that drive the development of reversible soil hydrophobicity

Creator:: Woolverton, Priscilla B.
Abstract:: This study focuses on one widespread characteristic of poor soil quality: hydrophobic soil. Previous research has produced conclusive evidence to show that soil hydrophobicity is affected by soil organic matter (SOM) and soil water content (WC). Hydrophobicity that responds to changes in WC is a unique form of surface hydrophobicity...
Resource Type:: Masters Thesis
Full Text:: measurement of wettability and soil organic matter characterization...................................... 24

Expression and inheritance of tolerance to waterlogging stresses in wheat (Triticum aestivum L.)

Creator:: Boru, Getachew
Resource Type:: Dissertation
Full Text:: Head of the Crop and Soil Scien& Department Dean of the Gradate School I understand that my thesis

Nitrate and water under terraced dryland wheat production in Oregon

Creator:: Strock, Jeffrey S.
Abstract:: Dry land agriculture using summer fallow is a common crop production practice in the Columbia Plateau region of eastern Oregon. Farmed-over level terraces are used to control surface water runoff and soil erosion. More than 70 percent of the average annual precipitation around Pendleton, Oregon (350 - 400 mm) falls...
Resource Type:: Masters Thesis
Full Text:: MATERIALS AND METHODS 30 Location 30 Measurements 31 Soil sampling 31 Soil moisture content 32

Field sampling and mapping strategies for balancing nitrogen to variable soil water across landscapes

Creator:: Roberts, Michael C. (Michael Coy), 1951-
Resource Type:: Dissertation
Full Text:: Variability Soil Moisture and Fertility Farmers and researchers first observed yield variations associated

Potato (Solanum tuberosum L.) tuber quality response to a transient water stress

Creator:: Eldredge, Eric P.
Resource Type:: Dissertation
Full Text:: drying GMS 40 4. Soil drying GMS 41 5. GMS compared to tensiometers 42 6. Soil moisture levels 43 7

Response of Roughstalk Bluegrass (Poa trivialis L.) to Waterlogging Stress

Creator:: Liu, Mingyang
Abstract:: Roughstalk bluegrass (Poa trivialis L.) (RB) is a weed species that increased very quickly in grass seed production fields of the Willamette Valley. The invasion of RB in grass seed crops often occurs in waterlogged soils. In waterlogged areas, RB exhibited better competitiveness and had greater population densities than other...
Resource Type:: Dissertation
Full Text:: Crop Science Head of the Department of Crop and Soil Science Dean of the Graduate

ScholarsArchive@OSU

Duration of saturation and redox potentials in selected Willamette Valley soils

Water and solute transport : modeling and application to water conservation in layered soil

Effects of Initial Moisture and Surface Properties on Sorptivity of Coarse Soil and Sand

Exploring mechanisms that drive the development of reversible soil hydrophobicity

Expression and inheritance of tolerance to waterlogging stresses in wheat (Triticum aestivum L.)

Nitrate and water under terraced dryland wheat production in Oregon

Field sampling and mapping strategies for balancing nitrogen to variable soil water across landscapes

Potato (Solanum tuberosum L.) tuber quality response to a transient water stress

Response of Roughstalk Bluegrass (Poa trivialis L.) to Waterlogging Stress

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