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Filtering by: Committee Member Hemphill, Delbert Remove constraint Committee Member: Hemphill, Delbert

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Effect of a broccoli green manure, soil solarization, and isolates of Verticillium dahliae on Verticillium wilt of agronomic and nursery crops

Creator:

Berlanger, Ingrid E.

Abstract:

Green manures, soil solarization, and long rotations with crops not susceptible to Verticillium wilt are among the disease management tactics currently under investigation as alternatives to chemical fumigation of soil. The effect of a broccoli green manure on soil microsclerotial populations of three isolates of Verticillium dahliae and on Verticillium...

Resource Type:

Masters Thesis

Full Text:

. Thanks also to Delbert Hemphill and John Ruben for serving on my committee, to Blaine Baker for
Integration of conservation tilage and cover crops in broccoli production systems of the Pacific Northwest

Creator:

O'Brien, Timothy John

Abstract:

Field and greenhouse experiments were conducted in 1996 and 1997 to evaluate the effects of integrating conservation tillage and cover cropping on broccoli production as well as agroecological parameters. A field experiment was conducted during 1996-97 at the Oregon State University Horticulture Research farm near Corvallis, OR. The specific objectives...

Resource Type:

Masters Thesis

Full Text:

to extend thanks to my graduate committee members: Drs. Carol Mallory-Smith and Delbert Hemphill
Stability of soil structure for water movement in an aridisol

Creator:

Ali, Safdar

Abstract:

Lack of stability of soil aggregates for water movement is a major problem in arid soils due to low organic matter and higher sodium contents. Soil amendments for improving stability of structure and increasing infiltration of water are essential to solve water management problems in these areas. Different rates of...

Resource Type:

Masters Thesis

Full Text:

. Delbert D. Hemphill for serving on my graduate committee. I would like also to thank Dr. Clinton C
Effects of potato cropping practices on nitrate leaching in the Columbia basin

Creator:

McMorran, Jeffrey P.

Resource Type:

Dissertation

Full Text:

, Russell Ingham, and Delbert Hemphill contributed in unique ways to the completion of this research

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Academic Affiliation

Botany and Plant Pathology1
Crop and Soil Science1
Horticulture1
Soil Science1

Advisor

Johnson, Kenneth B.1
Luna, John M.1
Mosley, Alvin R.1
Powelson, Mary L.1
Warkentin, Benno P.1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1989 to 2000

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Committee Member

Hemphill, Delbert3
Bolton, Floyd E.1
Clough, George1
Hammond, Max1
Hemphill, Delbert D.1
more Committee Members »

Creator

Ali, Safdar1
Berlanger, Ingrid E.1
Mcmorran, Jeffrey P.1
O'brien, Timothy John1

Date

Date range begin – Date range end

Current results range from 1988 to 1999

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Decade

1990-19993
1980-19891

Degree Field

Botany and Plant Pathology1
Crop Science1
Horticulture1
Soil Science1

Degree Level

Master's3
Doctoral1

Degree Name

Master of Science (M.S.)3
Doctor of Philosophy (Ph.D.)1

Language

English [eng]4

Non-Academic Affiliation

Oregon State University. Graduate School4

Peer Reviewed

No4

Resource Type

Masters Thesis3
Dissertation1

Rights Statement

Copyright Not Evaluated4

Subject

Arid soils1
Broccoli -- Yields -- Oregon1
Conservation tillage -- Oregon1
Cover crops -- Oregon1
Nitrates -- Environmental aspects -- Columbia River Watershed1
more Subjects »

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