Index Catalog // ScholarsArchive@OSU

An evaluation of soil warming for increased crop production

Creator:: Rykbost, K. A.
Abstract:: In regions where soil temperatures limit plant growth, artificial soil warming may be an economically feasible practice. This hypothesis was evaluated in a soil warming experiment near Corvallis, Oregon. This experiment was prompted by the observation that multiple use of waste heat discharged in the condenser cooling water of thermal...
Resource Type:: Dissertation
Full Text:: - ORE), and the Oregon State University Agricultural Experiment Station is gratefully acknowledged

Experimental analysis of subsurface heating and irrigation on the temperature and water content of soils

Creator:: Sepaskhah, Ali Reza
Abstract:: Multiple use of waste heat from power plants may become an important consideration in the development, siting, and certification of these plants. A multiple use system of components that can beneficially utilize waste heat may include home heating and cooling, greenhouses, animal enclosures, open basins for single cell protein production...
Resource Type:: Dissertation
Full Text:: Department of the Interior, and the Oregon Agricultural Experiment Station is gratefully acknowledged. The

Simulation and field validation of heat and water flow during soil freezing and thawing

Creator:: Pikul, Joseph Lawrence
Abstract:: Freeze/thaw cycles are numerous in agricultural soils of the Pacific Northwest. Potential loss of soil by erosion is high whenever a soil thaws from the surface creating a saturated soil overlying an impermeable frozen layer. Field studies were conducted to investigate the effect of surface residue on soil freezing. Residue...
Resource Type:: Dissertation
Full Text:: by Joseph L. Pikul Jr. A THESIS submitted to Oregon State University in partial fulfillment of

Physiological effects of water stress on young corn plants

Creator:: Barlow, Edward William Ross
Abstract:: Laboratory experiments were used to investigate the mechanism of plant response to water stress by determining the sensitivity of leaf elongation, photosynthesis and transpiration in young corn plants to a decrease in leaf water potential. In initial experiments, 9 day old corn plants were grown at soil water potentials of...
Resource Type:: Dissertation
Full Text:: Department of the Interior (grant No. B -028- ORE) and the Oregon State University Agricultural Experiment

Theoretical and experimental evaluation of transfer of 2, 4-dichlorophenoxyacetic acid in porous media

Creator:: Saxena, Subodh Kumar, 1942-
Abstract:: Experiments were conducted to study the effect of pore size distribution on the diffusion of 2, 4-Dichlorophenoxyacetic acid (carbon- 14) through water saturated porous media. Eight size fractions of glass beads were used representing the porous media. It was found that as the average particle radius, and hence pore radius,...
Resource Type:: Dissertation
Full Text:: Experiment Station (project 419), and the Soil and Water Conservation Division of the Agricultural Research

Soil surface application of asphalt in afforestation in semi-arid zones of Iran

Creator:: Kowsar, Ahang
Resource Type:: Dissertation
Full Text:: of Iran by Ahang Kowsar A THESIS submitted to Oregon State University in partial fulfillment of

Measurement and interpretation of physical properties of soils

Creator:: Nagpal, Narender Kumar, 1942-
Abstract:: One of many important physical properties that must be known to understand transport phenomena in soils is pore size distribution. Presently the pore size distributions of soils are most commonly obtained from soil water characteristic curves. The soil water characteristic curves are usually obtained by the pressure plate technique. It...
Resource Type:: Dissertation
Full Text:: Oregon Agricultural Experiment Station (project 419), is grate- fully acknowledged. TABLE OF CONTENTS

Gaussian elimination technique for solving the diffusion equation for moisture movement in unsaturated soil

Creator:: Ashcroft, Gaylen L.
Resource Type:: Dissertation
Full Text:: submitted to OREGON STATE UNIVERSITY in partial fulfillment of the requirements for the degree of

Diffusion and surface reaction processes of absorption on surfaces of soil particles in unsaturated soils

Creator:: Yingjajaval, Suntaree
Abstract:: At present the adsorption kinetic of ions by soil particles is considered to be a surface reaction. When the transport of solutes in soils is described using the one-dimensional flow equation, it becomes a serious problem that lateral diffusion of ions from the bulk solution towards the soil surfaces is...
Resource Type:: Dissertation
Full Text:: to Oregon State University in partial fulfillment of the requirements for the degree of Doctor of

The influence of ectomyorrhizae on drought tolerance characteristics of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) seedlings

Creator:: Dosskey, Michael G.
Abstract:: Douglas-fir seedlings were inoculated with different species of ectomycorrhizae-forming fungi in order to test the concept that ectomycorrhizae enhance the drought tolerance of seedlings and to investigate the mechanisms responsible for this effect. Seedlings were transplanted at age 6 to 8 weeks into pots containing pasteurized loam soil and inoculated...
Resource Type:: Dissertation
Full Text:: University. Additional funds were provided by the Oregon Agricultural Experiment Station. TABLE OF

ScholarsArchive@OSU

An evaluation of soil warming for increased crop production

Experimental analysis of subsurface heating and irrigation on the temperature and water content of soils

Simulation and field validation of heat and water flow during soil freezing and thawing

Physiological effects of water stress on young corn plants

Theoretical and experimental evaluation of transfer of 2, 4-dichlorophenoxyacetic acid in porous media

Soil surface application of asphalt in afforestation in semi-arid zones of Iran

Measurement and interpretation of physical properties of soils

Gaussian elimination technique for solving the diffusion equation for moisture movement in unsaturated soil

Diffusion and surface reaction processes of absorption on surfaces of soil particles in unsaturated soils

The influence of ectomyorrhizae on drought tolerance characteristics of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) seedlings

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