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Filtering by: Subject Roses -- Rootstocks -- Diseases and pests -- Control Remove constraint Subject: Roses -- Rootstocks -- Diseases and pests -- Control Degree Level Doctoral Remove constraint Degree Level: Doctoral Rights Statement Copyright Not Evaluated Remove constraint Rights Statement: Copyright Not Evaluated

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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
Coniothyrium rose canker in Oregon

Creator:

Intrama, Siriphong

Abstract:

An isolate of Coniothyrium obtained from a stem canker on Nocturne rose from the Botany Department Farm, Corvallis, Oregon was studied with respect to morphological and cultural characters, pathogenicity and mineral nutrition. The hyphae of the isolate were smooth, septate and branched. The hyphal cells averaged 16.37 X 3.52 microns....

Resource Type:

Dissertation
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
Decomposition of Basamid in Douglas-fir heartwood

Creator:

Forsyth, Paul Griffin

Abstract:

Basamid^R (3,5-dimethy1-1,3,5,2H-tetrahydrothiadiazine- 2-thione) is a crystalline powder used as a soil sterilant. This fumigant acts in soil by decomposing to methylisothiocyanate (MITC), the primary active ingredient, as well as hydrogen sulfide, methylamine, and formaldehyde. In wood, Basamid decomposes too slowly to be efficacious against decay fungi unless amended with various...

Resource Type:

Dissertation
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
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
Biosynthesis of blasticidin S : mechanistic and stereochemical investigations

Creator:

Prabhakaran, P. C.

Abstract:

Feeding of [3-¹³C, 2-¹⁵N]arginine, 38a, unequivocally established that the β- arginine moiety of blasticidin S, 1, was formed from α-arginine by an intramolecular migration of the α-amino group to the β- position. Further feedings using chirally deuteriated arginines 38e and 38f revealed that the aminomutase process occurred with inversion of...

Resource Type:

Dissertation

Full Text:

importance and is used as a fungicide to control the rice blast disease.3,4 Structure Elucidation The
AppleMgr, a prototype decision aid for apple pest management

Creator:

Haley, Sue

Abstract:

Computer decision aids can help integrate and apply diverse sources of information and expertise to problems of integrated pest management (IPM) in agriculture and forestry. AppleMgr combines a rule-based expert system with databases and spreadsheets in a prototype decision aid intended to be expanded and modified for use by extension...

Resource Type:

Dissertation

Full Text:

growers. GrapES is an ES for grape growers in Pennsylvania that integrates disease and insect control

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Academic Affiliation

Entomology6
Botany and Plant Pathology4
Chemistry1
Forest Products1
Horticulture1

Advisor

Croft, Brian A.2
Deep, Ira W.2
Aliniazee, M. T.1
Berry, Ralph E.1
Coyier, Duane L.1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1963 to 2000

View distribution

Committee Member

Croft, Brian2
Appleby, Arnold1
Appleby, Arnold P.1
Berry, R. E.1
Berry, Ralph1
more Committee Members »

Creator

Bartlett, Allan B.1
Booth, Steven R.1
Coop, Leonard Bryan1
Fernando, W. Gerard Dilantha1
Forsyth, Paul Griffin1
more Creators »

Date

Date range begin – Date range end

Current results range from 1963 to 2000

View distribution

Decade

2000-20091
1990-19995
1980-19895
1960-19692

Degree Field

Entomology6
Botany and Plant Pathology3
Chemistry1
Forest Products1
Horticulture1
more Degree Fields »

Degree Level

Doctoral[remove]13

Degree Name

Doctor of Philosophy (Ph.D.)13

Language

English [eng]13

Non-Academic Affiliation

Oregon State University. Graduate School13

Peer Reviewed

No11

Resource Type

Dissertation13

Rights Statement

Copyright Not Evaluated[remove]13

Subject

Roses -- Diseases and pests2
Agricultural pests -- Control -- Data processing1
Apple maggot -- Control1
Apples -- Diseases and pests -- Control1
Broccoli -- Diseases and pests -- Biological control -- Oregon -- Corvallis1
more Subjects »

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