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Filtering by: Creator Stevenson, John Remove constraint Creator: Stevenson, John Advisor Dick, Richard P. Remove constraint Advisor: Dick, Richard P.

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Cover crops and biochemical functional diversity in relation to nitrogen availability in soil

Creator:

Burket, John Zimmerman

Abstract:

Nitrogen availability in agricultural soils from fertilizer, plant residue inputs, and soil organic matter has important implications beyond crop yield. Legume winter cover crops and one fourth the recommended N rate on sweet corn resulted in yields equivalent to those at the recommended rate in the Willamette Valley of western...

Resource Type:

Dissertation

Full Text:

to nitrogen availability in soil AN ABSTRACT OF THE DISSERTATION OF John Z. Burket for the
Transformations of sulfur in wetland rice soils

Creator:

Islam, M. Mujibul

Resource Type:

Dissertation

Full Text:

research and for critically reviewing the manuscript. Dr. Larry Boersma, Dr. John Baham, Dr. Dale Moss and
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:

activity in most soils (Rasmussen et al, 1989; Bolton et al., 1985; McGill et al., 1986; Stevenson, 1982
Inorganic nitrogen and soil biological dynamics in cover crop systems

Creator:

Kauffman, Susan Muna

Resource Type:

Masters Thesis

Full Text:

in fallow soils. Soil Biol. Biochem. 12:281-291. Stevenson, F.J. 1986. Cycles of Soil. John Wiley
The Biogeochemistry of nitrogen and phosphorus cycling in native shrub ecosystems in Senegal

Creator:

Dossa, Ekw'e Lokossou, 1960-

Abstract:

Two native shrub species (Piliostigma reticulatum and Guiera senegalensis) are prominent vegetation components in farmers’ fields in Senegal. However, their role in nutrient cycling and ecosystem function has largely been overlooked. A study including both laboratory and field experiments was conducted to evaluate potential biophysical interactions of the two shrub...

Resource Type:

Dissertation

Full Text:

and also to Drs. John Baham, Jennifer Field, Kim Anderson and Maria Dragila for their time
Nitrate leaching and model evaluation under winter cover crops

Creator:

Minshew, Hudson F.

Resource Type:

Masters Thesis

Full Text:

my studies. To Dr. John Selker for his suggestions and enthusiasm for the NWREC project, and Dr
Effects of organic and inorganic soil amendments of phosphorus sorption

Creator:

Iyamuremye, Faustin

Resource Type:

Dissertation

Full Text:

Sandeno, Susan Kauffman, Mary Fauci, Morten Miller, John Burket, Mujibul Islam, Sheila Nelson, and Tad
Microbial community structure as influenced by season and stand age in a Douglas-fir (Pseudotsuga menziesii) ecosystem

Creator:

Kucera, Jennifer Moore

Abstract:

Forest harvest can have significant impacts on forest ecosystems that may influence the capacity of soils to sequester carbon (C). The microbial community controls decomposition, which is a critical process in partitioning litter- and root-C between CO₂ and storage in semi-permanent soil-C pools. The objectives of this study were to...

Resource Type:

Dissertation

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Academic Affiliation

Crop and Soil Science8

Advisor

Dick, Richard P.[remove]8

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1993 to 2007

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Committee Member

Baham, John1
Boersma, Larry1
Bottomley, Peter1
Compton, Jana E.1
Crabtree, G.1
more Committee Members »

Creator

Burket, John Zimmerman1
Dossa, Ekw'e Lokossou, 1960 1
Fauci, Mary F.1
Islam, M. Mujibul1
Iyamuremye, Faustin1
more Creators »

Date

Date range begin – Date range end

Current results range from 1992 to 2006

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Decade

2000-20092
1990-19996

Degree Field

Soil Science8

Degree Level

Doctoral5
Master's3

Degree Name

Doctor of Philosophy (Ph.D.)5
Master of Science (M.S.)3

File Format

application/pdf1

Language

English [eng]8

License

All rights reserved3

Non-Academic Affiliation

Oregon State University. Graduate School8

Peer Reviewed

No8

Resource Type

Dissertation5
Masters Thesis3

Rights Statement

Copyright Not Evaluated5
In Copyright3

Subject

Soil biology2
Bauhinia reticulata -- Senegal1
Carbon cycle (Biogeochemistry) -- Washington (State) -- Gifford Pinchot National Forest1
Cover crops -- Environmental aspects -- Oregon1
Cover crops -- Oregon1
more Subjects »

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