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Nitrogen nutrition of seedling alfalfa (Medicago sativa L.)

Creator:: Eardly, Bertrand D.
Abstract:: Nitrogen fertilization of seedling legumes is a controversial practice intended to provide N to the plant during periods when seed N, soil N, and N₂ fixation may not meet plant requirements; eg. prenodulation, postharvest, or in the event of an inoculation failure. Field experiments were conducted in 3 consecutive years...
Resource Type:: Dissertation
Full Text:: advice during the planning and writing of this thesis. Thanks also to Dr. John Baham for serving as

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:: facility. I would also like to thank my graduate committee members, JoIm Buckhouse and John Baham for

Impact of a red clover winter cover crop on carbon and nitrogen mineralization by microorganisms in soil aggregates

Creator:: Ndiaye, Aissatou
Abstract:: Although legumes have been widely studied for their nitrogen-fixing ability, it is uncertain to what extent legume cover crops achieve their nitrogen-fixing potential under the climatic conditions encountered in western Oregon. Furthermore, it is unknown what factors control the proportions of legume cover crop N that are either sequestered into...
Resource Type:: Masters Thesis
Full Text:: Dick and Dr John Baham for allowing me to use their lab equipment. I thank Dr Christensen for his

Persistence of western juniper resource islands following canopy removal

Creator:: Miwa, Christopher
Abstract:: Western juniper (Juniperus occidentalis) cover has more than doubled within the last century and currently occupies over 9 million acres in the Intermountain West. Encroachment has altered the spatial distribution of soil nutrients and plants in these systems, forming nutrient enriched 'resource islands,' under tree canopies. The purpose of this...
Resource Type:: Masters Thesis
Full Text:: cascades it never felt that way. - My committee, John Baham and Paul Doescher, your guidance in

Experimental design of physical aquifer models for evaluation of groundwater remediation strategies

Creator:: Humphrey, Mark D.
Abstract:: Groundwater resources have become seriously threatened due to improper use by industrial, municipal, and even public sectors. Widespread contamination of aquifer systems has jeopardized human health and the environment and methods for restoring these systems are needed. Biological and chemical in situ remediation, where contaminants are degraded within the natural...
Resource Type:: Masters Thesis
Full Text:: . John Baham, John Selker, and Jon Kimerling for serving on my committee. Support for this research

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:: Baham, Dr. John Selker and Dr. Les Fuchigami for their guidance, support and for serving on my

In situ transformation of toluene and xylene to benzylsuccinic acid analogs in contaminated groundwater

Creator:: Reusser, Dominik E.
Abstract:: The rate of removal of benzene, toluene, ethylbenzene and the xylene isomers (BTEX) from contaminated groundwater is needed to design remediation processes. Benzylsuccinic acid (BSA) and methyl-benzylsuccinic acid (methyl BSA) are unambiguous metabolites of anaerobic BTEX biodegradation. An analytical method for quantitative determination of BSA in groundwater samples was developed....
Resource Type:: Masters Thesis
Full Text:: achieve my goals in a short time. I would also thank my other committee members John Baham, Mike Schuyler

Characteristics of photochemical production of carbon monoxide in seawater

Creator:: Redden, George Dean
Resource Type:: Masters Thesis
Full Text:: members; John Baross, Bob Worrest, and John Bahain, were all hepful beyond the call of duty, especially

Evaluation of mix ingredients on the performance of rubber-modified asphalt mixtures

Creator:: Takallou, Hossein B.
Abstract:: Rubber-modified asphalt pavements have been used in Sweden and the United States since the 1970's. In these applications ground recycled tire particles (0.25 inch minus) are added to a gap-graded aggregate and then mixed with hot asphalt cement. The benefits of adding rubber to the mix include increased skid resistance...
Resource Type:: Dissertation
Full Text:: Rogge, and John Baham for their participation on the Committee and their comments and ideas regarding

Sulfur oxidation and rhodanese activity in soils

Creator:: Deng, Shiping
Resource Type:: Masters Thesis
Full Text:: assistance throughout this period of graduate study and research. Drs. John Baham, Peter Bottomley and

ScholarsArchive@OSU

Nitrogen nutrition of seedling alfalfa (Medicago sativa L.)

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

Impact of a red clover winter cover crop on carbon and nitrogen mineralization by microorganisms in soil aggregates

Persistence of western juniper resource islands following canopy removal

Experimental design of physical aquifer models for evaluation of groundwater remediation strategies

Nitrate and water under terraced dryland wheat production in Oregon

In situ transformation of toluene and xylene to benzylsuccinic acid analogs in contaminated groundwater

Characteristics of photochemical production of carbon monoxide in seawater

Evaluation of mix ingredients on the performance of rubber-modified asphalt mixtures

Sulfur oxidation and rhodanese activity in soils

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