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Filtering by: Subject Roses -- Rootstocks -- Diseases and pests -- Control Remove constraint Subject: Roses -- Rootstocks -- Diseases and pests -- Control Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.) Peer Reviewed No Remove constraint Peer Reviewed: No

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Effects of volatile fungicides on Sphaerotheca pannosa on rose

Creator:

Gallian, John J.

Resource Type:

Dissertation

Full Text:

and the most serious disease faced by the cut rose producer. Control in the greenhouse has been
Relation of nitrogenous substances in rose leaves to powdery mildew resistance

Creator:

Bartlett, Allan B.

Abstract:

There is considerable variation among rose varieties in susceptibility to mildew, and as a result of maturation, leaves of most susceptible varieties become resistant to infection. The nature of resistance has been sought in various studies involving environmental, morphological, and physiological factors. An attempt was made in the present investigation...

Resource Type:

Dissertation

Full Text:

disease. Two or more extracts from healthy and diseased leaves from each of the six rose varieties were
Isolation, purification, serology and nature of rose mosaic virus

Creator:

Halliwell, R. S. (Robert S.)

Resource Type:

Dissertation

Full Text:

records of a virus-like disease of rose in the United States was by Taubenhaus in 1923 (37) and 1925 (38
Management of variegated cutworm in peppermint

Creator:

Coop, Leonard Bryan

Abstract:

A pest management program for variegated cutworm (VC), Peridroma saucia (Hubner), in Oregon peppermint was developed based on studies of pheromone trapping, sampling methods, and economic thresholds. Pheromone traps effectively trapped VC males and were used to reflect development and oviposition trends. Trap height was linearly correlated to moth catch...

Resource Type:

Dissertation

Full Text:

thresholds (number of larvae/1000 cm2 as a function of peppermint oil price, cost of control, and field class
Studies on the etiology and epidemiology of bull's eye rot of pears

Creator:

Henriquez, Jose Luis, 1961-

Abstract:

The objective of this dissertation is to introduce low-cost processing methods for the fabrication of ZnO transparent thin-film transistors (TTFTs). A novel method for depositing ZnO body layers via spin-coating of a zinc nitrate-based spin solution is presented. The processing conditions of spin-coated ZnO are optimized to produce continuous and...

Resource Type:

Dissertation

Full Text:

, where the highest levels of disease were found at 10°C and at 30°C, respectively. Wetness duration did
Classical biological control of the filbert aphid, Myzocallis coryli (Goetze) (Homoptera:Aphididae) in western Oregon

Creator:

Messing, Russell H.

Abstract:

A classical biological control project was undertaken against the filbert aphid, Myzocallis coryli (Goetze), in western Oregon. Hazelnut orchards in Spain, France, and Italy were searched for natural enemies of the aphid, and a parasitic wasp, Trioxys pallidus Haliday, was imported, quarantined, mass-reared, and released in Oregon orchards. The wasp...

Resource Type:

Dissertation

Full Text:

guild. 2. The aphid is a serious, constant pest in hazelnut production. It is costly to control, and
Management of powder-post beetles, Dinoderus minutus F. in freshly cut bamboo

Creator:

Garcia, Carlos Manalo

Abstract:

The goal of this project was to develop an integrated pest management strategy for the control of a powder-post beetle (Dinoderus minutus F.). This species causes serious damage in Philippine bamboo. Developmental threshold and thermal constants were examined and natural enemies and ftmgi associated with beetles were investigated. Finally, the...

Resource Type:

Dissertation

Full Text:

project was to develop an integrated pest management strategy for the control of a powder-post beetle
Plant hormone-induced defense responses against Botrytis cinerea

Creator:

Akagi, Aya

Abstract:

Several plant hormones, including ethylene and jasmonates, are known to mediate responses against biotic and abiotic stress. The first and second objectives of this thesis were (i) to elucidate the role of ethylene in defense responses against Botrytis cinerea and specifically (ii) to determine the potential contribution of ethylene response...

Resource Type:

Dissertation

Full Text:

............................................................................................... 30 Softening and disease progression ..................................................... 33
The potential of endemic natural enemies to suppress pear psylla, Cacopsylla pyricola Förster, in the Hood River Valley, Oregon

Creator:

Booth, Steven R.

Abstract:

This thesis addressed the potential of endemic predaceous and parasitic arthropods of the Hood River Valley, Oregon to suppress the pear psylla, Cacopsylla pyricola F8rster. Natural enemies adequately suppressed psylla in three of seven unsprayed orchards of differing vegetational settings, orchard age, and size. Relatively few psylla natural enemies dispersed...

Resource Type:

Dissertation

Full Text:

russetted pears under standard and selective pest control programs during harvest at Quince, 1987-89. Total
Effects of near anaerobic storage conditions on physiology and flavor of various fruit types and on mortality of apple maggot (Rhagoletis pomonella)

Creator:

Kosittrakun, Manit

Resource Type:

Dissertation

Full Text:

procedures to control quarantined insects in harvested fruits and vegetables. Feasibility of any quarantine

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Academic Affiliation

Botany and Plant Pathology8
Entomology6
Crop and Soil Science5
Horticulture5
Botany1
more Academic Affiliations »

Advisor

Croft, Brian A.2
Mallory Smith, Carol A.2
Aliniazee, M. T.1
Bartholomew, Jerri L.1
Berry, Ralph E.1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1962 to 2017

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Committee Member

Parke, Jennifer4
Croft, Brian2
Jepson, Paul2
Johnson, Kenneth2
Riera-Lizarazu, Oscar2
more Committee Members »

Creator

Akagi, Aya1
Al Thahabi, Salam A.1
Ambrosino, Mario D.1
Bair, Zolton J.1
Bartlett, Allan B.1
more Creators »

Date

Date range begin – Date range end

Current results range from 1962 to 2017

View distribution

Decade

2010-20198
2000-200912
1990-19994
1980-19895
1960-19692

Degree Field

Botany and Plant Pathology8
Entomology8
Horticulture5
Crop Science4
Botany1
more Degree Fields »

Degree Level

Doctoral31

Degree Name

Doctor of Philosophy (Ph.D.)[remove]31

File Format

application/pdf3

Language

English [eng]31

License

All rights reserved19

Non-Academic Affiliation

Oregon State University. Graduate School31

Peer Reviewed

No[remove]31

Resource Type

Dissertation31

Rights Statement

In Copyright20
Copyright Not Evaluated11

Subject

Roses -- Diseases and pests3
Acetolactate synthase1
Agricultural pests -- Control -- Data processing1
Aphididae -- Biological control -- Oregon -- Willamette River Valley1
Aphididae -- Predators of -- Oregon -- Willamette River Valley1
more Subjects »

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