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Filtering by: Subject Syrphidae -- Oregon -- Willamette River Valley Remove constraint Subject: Syrphidae -- Oregon -- Willamette River Valley

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Enhancing the predatory potential of hoverflies on aphids in Oregon broccoli fields with floral resources

Creator:

Ambrosino, Mario D.

Abstract:

Four key aspects of the relationship between predatory hoverflies and the aphid pest Brevicoryne brassicae L. on broccoli were investigated in the Willamette Valley, Oregon USA: 1) the relationship between aphid density and hoverfly oviposition, 2) the larval voracity of key hoverfly species, 3) the preferences of hoverflies and broccoli...

Resource Type:

Dissertation

Full Text:

Brevicoryne brassicae L. on broccoli were investigated in the Willamette Valley, Oregon USA: 1) the
Ecological and mortality factors affecting the nesting stage of the Chinese pheasant, Phasianus torquatus Gmelin, in the Willamette Valley, Oregon

Creator:

Eklund, Carl Robert

Resource Type:

Masters Thesis

Full Text:

Stage of the Chinese Pheasant, Phasianus torquatus, Gmelin in the Willamette Valley, Oregon AN
Quilts and quilt-making in the Willamette Valley of Oregon

Creator:

Meloy, Betty Thiessen

Abstract:

This thesis is a documentation of a selected number of nineteenth century quilts studied by the investigator in the Willamette Valley. The quilts were located in museums and in individual's homes. A questionnaire, that was developed for this study of quilts, was filled out as each quilt was examined. Slides...

Resource Type:

Masters Thesis
Progress of irrigation research on Willamette Valley soils

Creator:

Oregon State University. Agricultural Experiment Station

Abstract:

The future expansion of agricultural production in the Willamette Valley will depend to a large degree upon the feasibility of introducing irrigated agriculture on the poorly drained soils in the Valley. A r earch program has been initiated to investigate the feasibility of rigation on poorly drained soils with the...

Resource Type:

Technical Report

Full Text:

Progress of Irrigation Research On Willamette Valley Soils Agricultural Experiment Station, Oregon State
The Ore bin ; Vol.24, No.3 (March 1962)

Creator:

Oregon. Dept. of Geology and Mineral Industries and Glenn, Jerry L.

Resource Type:

Journal

Full Text:

Vol. 24, No. 3 March, 1962 GRAVEL DEPOSITS IN THE WILLAMETTE VALLEY BETWEEN SALEM AND OREGON CITY
The possibilities and problems of forest farming in the Willamette Valley with particular reference to the determination of economic size

Creator:

Collard, Charles G.

Resource Type:

Undergraduate Thesis

Full Text:

Willamette Valley with particular reference to the determination of economic size The Possibilities and
Population and occurrence of birds in varying cover types of the Willamette Valley

Creator:

Buchanan, Robert Leland

Resource Type:

Masters Thesis

Full Text:

of the Willamette Valley POPULATION AND OCCURRENCE OF BIRDS IN VARYING COVER TYPES OF rHE
Genetic and environmental differences in important economic traits of crossbred sheep in spring lamb production

Creator:

De Baca, Roberto Luciano C., 1930-

Resource Type:

Masters Thesis

Full Text:

THEIS submitted to OREGON kï COLLEGE in partial rulfiliment of the requirements for the degree
Notes on some of the weeds of the Willamette Valley

Creator:

Gilbert, Henry C.

Resource Type:

Masters Thesis

Full Text:

Notes on some of the weeds of the Willamette Valley
Septic-tank drainfield performance in five Willamette Valley soils

Creator:

Wert, Stephen R.

Abstract:

Permeability, effects of age, and water table fluctuations were studied for nine drainfields in five soil types ranging from well to poorly drained. Three sites were in Willamette, one in Woodburn, two in Amity, two in Concord, and one in Dayton soils. Before permeability of drainfields could be evaluated, methods...

Resource Type:

Masters Thesis

Full Text:

Willamette Valley Soils by Stephen Robert Wert A THESIS submitted to Oregon State University in partial

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Academic Affiliation

Horticulture21
Botany and Plant Pathology20
Fisheries and Wildlife20
Crop and Soil Science19
Agricultural Economics8
more Academic Affiliations »

Advisor

Chastain, Thomas G.4
Wilson, Mark V.4
Aliniazee, M. T.3
Bliss, John C.3
Dugger, Bruce D.3
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1908 to 2017

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Unknown 191

Committee Member

Gitelman, Alix3
Haggerty, Roy3
Jepson, Paul3
Jones, Julia A.3
Lach, Denise3
more Committee Members »

Creator

Oregon State University. Extension Service77
Pscheidt, Jay W.46
Oregon State College. Agricultural Experiment Station44
Peachey, Ronald Edward28
Olsen, Jeff L.20
more Creators »

Contributor

Oregon State University. Extension Service1
Roberts, Rachel1

Date

Date range begin – Date range end

Current results range from 1908 to 2020

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Decade

2000-200972
1990-199937
1980-198931
1970-197931
1960-196938
1950-195917
1940-194937
1930-193923
1920-192915
1910-19192
more Decade »

Degree Field

Horticulture21
Wildlife Science18
Botany and Plant Pathology17
Soil Science14
Crop Science13
more Degree Fields »

Degree Level

Master's166
Doctoral44
Bachelor's7

Degree Name

Master of Science (M.S.)156
Doctor of Philosophy (Ph.D.)44
Bachelor of Science (B.S.)7
Master of Arts (M.A.)5
Master of Arts in Interdisciplinary Studies (M.A.I.S.)5

File Format

application/pdf38
pdf2
Video/mp41

Language

English [eng]408
Spanish; Castilian [spa]1

License

All rights reserved93
Attribution 4.0 (CC BY 4.0)1
Attribution-NonCommercial 4.0 (CC BY-NC 4.0)1

Location

Willamette Valley, Oregon, United States, (Hypsographic)2
Pacific Northwest, United States1
Willamette River, Oregon, United States, (Hydrographic)1
Willamette Valley, Multnomah County, Oregon, United States1

Non-Academic Affiliation

Oregon State University. Graduate School211
Oregon State University. Agricultural Experiment Station87
Oregon State University. Extension Service80
Oregon State University. Libraries8
Oregon Explorer1
more Non-Academic Affiliations »

Peer Reviewed

No206
Yes58

Resource Type

Technical Report181
Masters Thesis166
Dissertation44
Undergraduate Thesis7
Book2
more Resource Types »

Rights Statement

Copyright Not Evaluated222
In Copyright171
No Copyright - United States15

Subject

Spraying and dusting in agriculture -- Oregon -- Willamette River Valley44
Pesticides -- Application -- Oregon -- Willamette River Valley41
Soils -- Oregon -- Willamette River Valley17
Pear -- Diseases and pests -- Control -- Oregon -- Willamette River Valley10
Water resources development -- Oregon -- Willamette River Valley10
more Subjects »

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