Index Catalog // ScholarsArchive@OSU

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:: Larry Boersma Freeze/thaw cycles are numerous in agricultural soils of the Pacific Northwest

Leaf elongation as a function of soil water potential and photoperiod

Creator:: Hodges, T.
Abstract:: Leaf elongation is a major indicator of plant growth. It is controlled by complex interactions of many factors including light intensity, photoperiod, water availability, atmospheric conditions, and plant water stress. In this study, the response of leaf elongation to length of photoperiod and to plant water stress as indicated by...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Larry Bfersma Leaf elongation is a major indicator of plant growth. It is controlled

Pore size distributions as measured by the mercury intrusion method and their use in predicting permeability

Creator:: Klock, Glen O.
Abstract:: A number of investigators have proposed equations to predict the permeability of porous media. Most of their equations are based on the distributions of the sizes of the various contributing pores in the medium. Presently the pore size distributions of agricultural soils are most commonly obtained from soil water release...
Resource Type:: Dissertation
Full Text:: PREDICTING PERMEABILITY Abstract approved: Redacted for privacy (Larry Boersma) A number 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:: and guidance so generously given by Dr. Larry Boersma throughout my graduate studies at Oregon State

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:: opportunity of learning the art and philosophy of scientific researches. I am greatly thankful to Dr. Larry

Translocation of photosynthates in soybeans (Glycine Max. (L) Merr. cv. Wilkin) as affected by soil water potential and soil temperature

Creator:: Ekasingh, Methi
Resource Type:: Dissertation
Full Text:: Soil Water Potential and Soil Temperature Abstract approved: Redacted for privacy / Larry Boersma

Ozone inhibition of transpiration and photosynthesis of two soybean (Glycine max. [L.] Merr.) cultivars

Creator:: Yingjajaval, Suntaree
Resource Type:: Masters Thesis
Full Text:: know. I should especially like to thank Dr. Larry Boersma for his interest, guidance, and inspiration

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:: (Pseudotsuga menziesii (Mirb.1 Franco) Seedlings Abstract approved: Redacted for privacy ?. Larry Boersma

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:: . Larry Boersma for his valuable guidance, encouragement and constructive criticism which made the

Physiological and yield responses of snap beans (Phaseolus vulgaris) to water availability

Creator:: Biuk, Abdulmajid Ahmed
Resource Type:: Dissertation
Full Text:: express my sincere appreciation to Dr. Larry Boersma, my major professor, for his constant guidance and

ScholarsArchive@OSU

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

Leaf elongation as a function of soil water potential and photoperiod

Pore size distributions as measured by the mercury intrusion method and their use in predicting permeability

Physiological effects of water stress on young corn plants

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

Translocation of photosynthates in soybeans (Glycine Max. (L) Merr. cv. Wilkin) as affected by soil water potential and soil temperature

Ozone inhibition of transpiration and photosynthesis of two soybean (Glycine max. [L.] Merr.) cultivars

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

An evaluation of soil warming for increased crop production

Physiological and yield responses of snap beans (Phaseolus vulgaris) to water availability

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