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Filtering by: Committee Member Christensen, John M. Remove constraint Committee Member: Christensen, John M. Degree Field Soil Science Remove constraint Degree Field: Soil Science

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Symbiotic characteristics of Rhizobium leguminosarum bv. trifolii recovered from nodules of field-grown Trifolium subterraneum L.

Creator:

Wanjagi, Francis Ndung'u

Abstract:

In a series of greenhouse experiments, isolates representing serotypically distinct subpopulations of Rhizobium leguminosarum bv. trifolii recovered from root nodules of field-grown subclover Trifolium subterraneum cv. "Nangeela"), were evaluated for their symbiotic effectiveness potential, their effect on regrowth potential of subclover, and for their competitive abilities to form nodules. Isolates...

Resource Type:

Masters Thesis

Full Text:

compilation of this thesis. Thanks also to Drs. Neil Christensen, John Rohovec, and Barry Sherr for
Nitrogen mineralization from composted and fresh yard trimmings

Creator:

Nartea, Theresa J.

Resource Type:

Masters Thesis

Full Text:

committee, Dr. Neil Christensen (Soil Science); Dr. John Bolte (Bioresource Engineering) and Dr. Phil
Tall fescue growth and nitrogen uptake as influenced by non-thermal residue management

Creator:

Qureshi, Maqsood Hassan

Resource Type:

Masters Thesis

Full Text:

committee members Dr. Russel S. Karrow, Dr. John M. Hart and Dr. Dunham B. Daniel for their help, precious
Suitability of diverse composts as soil amendments for highbush blueberry (Vaccinium corymbosum L.)

Creator:

Costello, Ryan C.

Abstract:

Highbush blueberry (Vaccinium corymbosum L.) is adapted to soils with high organic matter and acidic pH. Composts provide organic matter and nutrients for growing blueberry in mineral soils, but many composts are high in pH and soluble salts. Acidification with elemental sulfur (S°) can remedy high pH, but the process...

Resource Type:

Masters Thesis

Full Text:

.) Abstract approved: Dan M. Sullivan Bernadine C. Strik
Development of predictive mapping techniques for soil survey and salinity mapping

Creator:

Elnaggar, Abdelhamid A.

Abstract:

Conventional soil maps represent a valuable source of information about soil characteristics, however they are subjective, very expensive, and time-consuming to prepare. Also, they do not include explicit information about the conceptual mental model used in developing them nor information about their accuracy, in addition to the error associated with...

Resource Type:

Dissertation

Full Text:

my committee members Dr. Herbert Huddleston, Dr. John Baham, Dr. Jon Kimerling and Dr. James

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Academic Affiliation

Crop and Soil Science5
Horticulture1

Advisor

Sullivan, Dan M.2
Bottomley, Peter J.1
Christensen, Neil W.1
Noller, Jay S.1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1992 to 2012

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Committee Member

Christensen, Neil2
Hart, John M.2
Baham, John E.1
Bolte, John1
Bryla, David R.1
more Committee Members »

Creator

Costello, Ryan C.1
Elnaggar, Abdelhamid A.1
Nartea, Theresa J.1
Qureshi, Maqsood Hassan1
Wanjagi, Francis Ndung'u1

Date

Date range begin – Date range end

Current results range from 1992 to 2011

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Decade

2010-20191
2000-20092
1990-19992

Degree Field

Soil Science[remove]5
Horticulture1

Degree Level

Master's4
Doctoral1

Degree Name

Master of Science (M.S.)4
Doctor of Philosophy (Ph.D.)1

File Format

application/pdf1

Language

English [eng]5

License

All rights reserved2

Non-Academic Affiliation

Oregon State University. Graduate School5

Peer Reviewed

No5

Resource Type

Masters Thesis4
Dissertation1

Rights Statement

Copyright Not Evaluated3
In Copyright2

Subject

Blueberries -- Effect of soil acidity on1
Blueberries -- Soils1
Compost1
Compost -- Nitrogen content1
Crop residue management1
more Subjects »

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