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Filtering by: Committee Member Bottomley, Peter Remove constraint Committee Member: Bottomley, Peter Rights Statement Copyright Not Evaluated Remove constraint Rights Statement: Copyright Not Evaluated

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Remediation of atrazine in irrigation runoff by a constructed wetland

Creator:

Runes, Heather B.

Abstract:

Due to its frequent use in agriculture and its frequent detection in surface water, atrazine was chosen as a model compound to study the treatment capability of a surface flow wetland used to remediate irrigation runoff at a container nursery near Portland, Oregon. Further evaluation of treatment of atrazine was...

Resource Type:

Dissertation
Effect of nitrogen fertilizer and irrigation on Acacia senegal seedling biomass and photosynthesis

Creator:

Warrag, Esam Eldin I.

Abstract:

Seedlings of Acacia senegal were grown in a glass greenhouse to study the effect of nitrogen and irrigation regimes on dry matter production and allocation to different plant organs, net photosynthesis per unit leaf area, and nitrogen content in the different plant organs. Ammonium nitrate (NH4NO3) was used in this...

Resource Type:

Masters Thesis
Determinants of microbial community structure and substrate utilization potential in soils of vegetable cropping systems

Creator:

Schutter, Mary E.

Abstract:

The Oregon Long-Term Soil Quality Project was initiated to identify soil properties that respond rapidly to alternative management practices. Such practices included winter cover cropping, which was implemented at two experimental research stations and several grower fields throughout the Willamette Valley. The goal of this thesis was to identify the...

Resource Type:

Dissertation
Nitrogen fluxes through microbial communities from Yaquina Bay (Oregon)

Creator:

Jamerlan, Saturnino Juan

Resource Type:

Masters Thesis
Microbiological control of food spoilage and pathogenic microorganisms in refrigerated foods

Creator:

Al-Zoreky, Nageb

Abstract:

Microgard, a commercially-available pasteurized fermented milk, was found inhibitory to gram negative bacteria such as Pseudomonas putida, some well-known foodborne pathogens (e.g. Salmonella, Yersinia and Aeromonas) and some fungi as revealed by an agar incorporation assay method. Gram positive bacteria, however, were not inhibited. Rather, some bacteria in this group...

Resource Type:

Masters Thesis
Utilization of inorganic and organic nitrogen by phytoplankton off the Washington and Oregon coasts

Creator:

Kokkinakis, Steven Andon

Resource Type:

Masters Thesis
The genetic diversity of Ceanothus-infective Frankia

Creator:

Ritchie, Nancy J.

Abstract:

Frankia from root nodules of nine different species of Ceanothus were characterized. DNA was amplified directly from nodular material using the polymerase chain reaction (PCR). The amplified region includes the 3' end of the 16S rRNA gene, the intergenic spacer (IGS), and a large portion of the 23S rRNA gene....

Resource Type:

Masters Thesis
Nitrogen fixation and cycling in a mixture of young red alder and Douglas-fir

Creator:

Tang, James Y.

Resource Type:

Masters Thesis
Field management effects on the thermal stability and activity of soil enzymes in whole soil and aggregates

Creator:

Bandick, Anna Katrina

Resource Type:

Masters Thesis
Biology and control of Fusarium spp. on Douglas-fir (Pseudotsuga menziesii)

Creator:

Hoefnagels, Mariëlle Henriette, 1965-

Abstract:

Fusarium spp. are among the most important pathogens of Douglas-fir (Pseudotsuga menziesii) seedlings in bareroot nurseries. Currently the most effective disease control method is soil fumigation with methyl bromide. As methyl bromide is phased out, however, other disease management strategies may become more important. We explored two alternative approaches to...

Resource Type:

Dissertation

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Academic Affiliation

Botany and Plant Pathology7
Crop and Soil Science4
Soil Science4
College of Oceanography2
Crop Science2
more Academic Affiliations »

Advisor

Dick, Richard P.3
Linderman, Robert G.3
Hruby, Dennis E.2
Myrold, David D.2
Wheeler, Patricia A.2
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1985 to 2001

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Committee Member

Bottomley, Peter[remove]25
Baham, John2
Cromack, Kermit2
Dougherty, William2
Loper, Joyce2
more Committee Members »

Creator

Al Zoreky, Nageb1
Bandick, Anna Katrina1
Deng, Shiping1
Doerge, Thomas A.1
Fernando, W. Gerard Dilantha1
more Creators »

Date

Date range begin – Date range end

Current results range from 1984 to 2000

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Decade

2000-20092
1990-199910
1980-198913

Degree Field

Soil Science8
Botany and Plant Pathology7
Crop Science2
Microbiology2
Oceanography2
more Degree Fields »

Degree Level

Doctoral15
Master's10

Degree Name

Doctor of Philosophy (Ph.D.)15
Master of Science (M.S.)10

File Format

application/pdf1

Language

English [eng]25

Non-Academic Affiliation

Oregon State University. Graduate School25

Peer Reviewed

No23

Resource Type

Dissertation15
Masters Thesis10

Rights Statement

Copyright Not Evaluated[remove]25

Subject

Nitrogen -- Fixation3
Fusarium2
Abscisic acid1
Acacia senegal1
Acid soils -- Oregon -- Willamette River Valley1
more Subjects »

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