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Filtering by: Subject Soils -- Nitrate content Remove constraint Subject: Soils -- Nitrate content Academic Affiliation Crop and Soil Science Remove constraint Academic Affiliation: Crop and Soil Science

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Inorganic nitrogen and soil biological dynamics in cover crop systems

Creator:

Kauffman, Susan Muna

Resource Type:

Masters Thesis

Full Text:

Soil 76:197-212. Trudgill, S.T., T.P. Burt, A.L. Heathwaite, and B.P. Arkell. 1991. Soil nitrate
Effects of winter cover crops following potato (Solanum tuberosum L.) on soil nitrate and soil fertility in the Columbia Basin

Creator:

Fernando, M.F. Sydney W.

Resource Type:

Dissertation

Full Text:

degree of Doctor of Philosophy in Crop Science presented on Soil Nitrate and Soil Fertility in the
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
Deep soil nitrogen survey, Lower Umatilla Basin, Oregon

Creator:

del Nero, Zachary Augustus

Abstract:

Soils of 49 agricultural and 2 "native condition" sites in the Lower Umatilla Basin, Oregon were sampled for nitrate-nitrogen, ammonium-nitrogen, chloride, and pH beginning in Fall of 1992. Several sites were sampled in Spring and Fall 1993 in order to indicate movement or loss of residual soil nitrogen over time....

Resource Type:

Masters Thesis

Full Text:

management practices- primarily irrigation, fertilization, and crop rotation systems, and deep soil nitrate
Soil biological indices and nitrogen availability during a simulated transition from inorganic to organic sources of nitrogen

Creator:

Fauci, Mary F.

Resource Type:

Masters Thesis

Full Text:

matter content and biological activity. These soil were used in a greenhouse study conducted to
Transformations of sulfur in wetland rice soils

Creator:

Islam, M. Mujibul

Resource Type:

Dissertation

Full Text:

aerobic flooding cycles. Figure 7.6. Effect of added organic residues on the ester S content in soil
Phosphorus availability in biosolids-amended soils

Creator:

Choate, Jeff

Abstract:

Quantifying labile phosphorus (P) pools in biosolids is needed to manage biosolids for both agronomic and environmental purposes. Phosphorus indices originated in an effort to protect surface water quality from-non-point-agricultural P inputs. The objectives of this research were to: (1) evaluate soil test components of the western Oregon P index...

Resource Type:

Masters Thesis

Full Text:

as well. Soil P Availability Soils typically range in total P content between about 50 and 3000
Assessing the role of reactive metal species in soil organic matter cycling using chemical imaging

Creator:

Keiluweit, Marco

Abstract:

Intimate associations with reactive metal species permanently protect soil organic matter (SOM) from microbial access and oxidation, contributing to the build-up of organic carbon (C) stocks in soils. It is increasingly recognized, however, that such associations can be reversible and that reactive metal species might even facilitate the oxidation of...

Resource Type:

Dissertation

Full Text:

ABSTRACT OF THE DISSERTATION OF Marco Keiluweit for the degree of Doctor of Philosophy in Soil Science
Genesis of silica-enriched agricultural pans in soils managed under wheat-fallow cropping systems

Creator:

Al-ismaily, Said S.

Resource Type:

Masters Thesis

Full Text:

of Master of Science in Soil Science presented on May 12. 1997. Title: Genesis of Silica-Enriched
Measurement of microbial biomass phosphorus in Oregon soils

Creator:

Claycomb, Peter T.

Resource Type:

Masters Thesis

Full Text:

of soil E. 3. Changes in gravimetric water content of field 61 soils during the sampling period. 4a

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Academic Affiliation

Crop and Soil Science[remove]48
Botany and Plant Pathology1
Forest Ecosystems and Society1

Advisor

Myrold, David D.8
Dick, Richard P.7
Bottomley, Peter J.4
Sullivan, Dan M.4
Christensen, Neil W.3
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1991 to 2018

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Committee Member

Hart, John5
Kleber, Markus5
Christensen, Neil4
Baham, John3
Bottomley, Peter J.3
more Committee Members »

Creator

Keiluweit, Marco2
Al Ismaily, Said S.1
Baloch, Dost M.1
Baumeister, Nancy C.1
Boyle, Stephanie A.1
more Creators »

Contributor

Hatten, Jeffery A.1
Reuter, Ronald J.1
Robinson, Douglas W.1

Date

Date range begin – Date range end

Current results range from 1991 to 2018

View distribution

Decade

2010-201913
2000-200914
1990-199921

Degree Field

Soil Science39
Crop Science6
Crop and Soil Science3
Botany and Plant Pathology1
Forest Ecosystems and Society1

Degree Level

Master's32
Doctoral16

Degree Name

Master of Science (M.S.)32
Doctor of Philosophy (Ph.D.)16

File Format

application/pdf3

Language

English [eng]48

License

All rights reserved25

Location

H J Andrews Experimental Forest, Oregon, United States, (Vegetation)1

Non-Academic Affiliation

Oregon State University. Graduate School47

Peer Reviewed

No44

Resource Type

Masters Thesis32
Dissertation16

Rights Statement

In Copyright27
Copyright Not Evaluated21

Subject

Soils -- Nitrogen content8
Denitrification3
Soil microbiology3
Soils -- Carbon content3
Soils -- Nitrogen content -- Northwest, Pacific3
more Subjects »

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