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Filtering by: Advisor Day, E. A. Remove constraint Advisor: Day, E. A. Advisor Dickason, E. A. Remove constraint Advisor: Dickason, E. A. Resource Type Masters Thesis Remove constraint Resource Type: Masters Thesis

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Biology of the seed chalcids Bruchophagus gibbus (Boheman) and B. roddi Gussakovskii in Oregon

Creator:

Carrillo S., Jose Luis

Resource Type:

Masters Thesis

Full Text:

author wishes to express his iost sincere gratitude to Dr. E. A. Dicicason, Associate Professor of
Varietal resisitance of hops, Humulus lupulus (Linn.), to the two-spotted spider mite, Tetranychus urticae (Koch)

Creator:

Mayberry, Terrel Wilson

Abstract:

The purpose of this study was to determine the relative resistance of genetic lines of hops, Humulus lupulus (Linn.) to the two-spotted spider mite, Tetranychus urticae (Koch) in western Oregon. Approximately three-hundred genetic lines of hops were screened under insectory conditions during the 1965 growing season at Corvallis, Oregon. Reduction...

Resource Type:

Masters Thesis

Full Text:

, TETRANYCHUS URTICAE (KOCH). Abstract approved: Redacted for Privacy E. A. Dickason The purpose of this
Insect parasites of the omnivorous leaf tier, Cnephasia longana (Haworth) in Oregon

Creator:

Poonyathawon, Panya

Abstract:

The purpose of this study was to determine the present status of introduced parasites of the omnivorous leaf tier, Cnephasia longana (Haworth) in Oregon. The omnivorous leaf tier is native to Europe. It was introduced into North America around 1929 and became a serious pest of economic crops such as...

Resource Type:

Masters Thesis

Full Text:

privacy Dr. E. A. Dickason The purpose of this study was to determine the present status of introduced
The parasite complex of the pea aphid, Acyrthosiphon pisum (Harris) on alfalfa in western Oregon

Creator:

Dickie, Alfred Gordon

Abstract:

This study was initiated in the Spring of 1966 for the purpose of determining the present status and effectiveness of imported parasitic wasps of the pea aphid in the Willamette Valley of western Oregon. The pea aphid is a serious pest throughout the pea and alfalfa growing regions of the...

Resource Type:

Masters Thesis

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/- Redacted for PrivacyAbstract approved: E. A. Dickason This study was initiated in the Spring of 1966 for

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Academic Affiliation

Entomology4

Advisor

Dickason, E. A.[remove]4

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1962 to 1970

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Creator

Carrillo S., Jose Luis1
Dickie, Alfred Gordon1
Mayberry, Terrel Wilson1
Poonyathawon, Panya1

Date

Date range begin – Date range end

Current results range from 1962 to 1970

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Decade

1970-19791
1960-19693

Degree Field

Entomology4

Degree Level

Master's4

Degree Name

Master of Science (M.S.)3
Master of Arts (M.A.)1

Language

English [eng]4

Non-Academic Affiliation

Oregon State University. Graduate School4

Peer Reviewed

No4

Resource Type

Masters Thesis[remove]4

Rights Statement

Copyright Not Evaluated4

Subject

Alfalfa -- Disease and pest resistance1
Bruchophagus1
Bruchophagus roddi1
Hops1
Insect pests -- Biological control1
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