Skip to Content

Switch language English
- Switch language
- Deutsch
- English
- Español
- Français
- Italiano
- Português do Brasil
- 中文
Login

ScholarsArchive@OSU

Home
About
Help
Contact

Search ScholarsArchive@OSU

Advanced Search

Search Constraints

Start Over

Filtering by: Alternative title ssim Forest statistics for County, Oregon Remove constraint Alternative title ssim: Forest statistics for County, Oregon Academic Affiliation Botany and Plant Pathology Remove constraint Academic Affiliation: Botany and Plant Pathology Advisor Hansen, Everett M. Remove constraint Advisor: Hansen, Everett M.

« Previous | 1 - 10 of 17 | Next »

Relevance
Title [A-Z]
Title [Z-A]
Date Created ▼
Date Created ▲
Date Uploaded ▼
Date Uploaded ▲

Number of results to display per page

10 per page
20 per page
50 per page
100 per page

View results as:

List Gallery Masonry

Search Results

The epidemiology of sudden oak death in Oregon forests

Creator:

Peterson, Ebba K.

Abstract:

The phytopathogen Phytophthora ramorum (Werres, DeCock & Man in't Veld), causal agent of Sudden Oak Death (SOD) of oaks (Quercus spp.) and tanoaks (Notholithocarpus densiflorus syn. Lithocarpus densiflorus), is established in coastal forests of the western United States. Since the discovery of SOD in the Douglas-fir / tanoak forests of...

Resource Type:

Dissertation

Full Text:

Oregon State University in partial fulfillment of the requirements for the degree of
Epidemiology and population biology of Inonotus tomentosus as a pathogen of forests of British Columbia

Creator:

Lewis, Katherine JoAnn

Abstract:

The root disease fungus Inonotus tomentosus, common in the old growth boreal forests of British Columbia, poses a threat to the health of second growth forests established on sites with a previous history of root disease. Colonized stumps occur in groups of 1 to 6; the groups are clumped within...

Resource Type:

Dissertation

Full Text:

to "Wimp Tours" Acknowledgements Financial support for this thesis was provided by the Forest
Pathogenicity of Phytophthora species from Oregon waterways

Creator:

Navarro, Sarah M.

Abstract:

Described as one of the most destructive pathogens of agricultural crops and forest trees, Phytophthora is a genus of microorganisms containing over 100 known species. Phytophthora alni has caused collar and root disease in alders throughout Europe and a form of the species has recently been isolated in North America....

Resource Type:

Masters Thesis

Full Text:

counties and Curry County, Oregon. P. ramorum was introduced into the forest of California in the mid
Phytosanitation of Douglas-fir (Pseudotsuga menziesii) logs to mitigate the risk of artificially disseminating Phytophthora ramorum within the global trade of timber

Creator:

Hulbert, Joseph M.

Abstract:

Phytophthora ramorum is a plant pathogen that was accidentally introduced to the United States. This invasive microorganism has killed over a million trees in California and Oregon, and continues to spread to new areas. Diseased areas have been nationally quarantined to prevent further spread and more than ninety countries include...

Resource Type:

Masters Thesis

Full Text:

Oregon State University in partial fulfillment of the requirements for the degree of
Phytophthora species and riparian alder tree damage in western Oregon

Creator:

Sims, Laura L.

Abstract:

The genus Phytophthora contains some of the most destructive pathogens of forest trees, including the most destructive pathogen of alder in recent times, Phytophthora alni. Alder trees were reported to be suffering from canopy dieback in riparian ecosystems in western Oregon, which prompted a survey of alder health and monitoring...

Resource Type:

Dissertation

Full Text:

monitoring for P. alni. In 2010 surveys in western Oregon riparian ecosystems were initiated to gather
Distribution and prediction of Swiss needle cast of Douglas-fir in coastal Oregon

Creator:

Rosso, Pablo H.

Abstract:

This study was directed to improve our understanding of the ecology of Swiss needle cast (SNC) of Douglas-fir, a disease that produces extensive damage to forests and plantation in the coastal region of Oregon and Washington. A disease prediction model for the coastal area of Oregon was built by establishing...

Resource Type:

Dissertation

Full Text:

-fir in coastal Oregon AN ABSTRACT OF THE DISSERTATION OF Pablo H. Rosso for the degree of Doctor of
Susceptibility of golden chinquapin (Chrysolepis chrysophylla) to Phytophthora cambivora

Creator:

Saavedra, Angel Luis

Abstract:

In early 2000, unusual mortality of a native North American tree, golden chinquapin, was reported by the USDA-Forest Service. Dying trees exhibited girdling cankers in the inner bark of the lower bole, branch flagging and defoliation. Isolations from necrotic tissues and soil associated with diseased or killed trees yielded Phytophthora...

Resource Type:

Masters Thesis

Full Text:

tests showed that both mating types, Al and A2, of this species were present in forest soil in Oregon
Susceptibility of Pacific yew (Taxus brevifolia Nutt.) to Phytophthora lateralis

Creator:

Murray, Marion S.

Abstract:

In 1991 Pacific yew (Taxus brevifolia Nutt.) was reported as a new host for Phytophthora lateralis Tucker and Milbrath which is an aggressive root rot pathogen thought previously to be specific to Port-Orford-cedar. This study was designed to compare the pathogenicity of P. lateralis on the two hosts, and to...

Resource Type:

Masters Thesis

Full Text:

drainages in Redacted for Privacy southwest Oregon and northwest California revealed a total of 1199
The infection and colonization of Douglas-fir needles by the Swiss needle cast pathogen, Phaeocryptopus gaeumannii (Rhode) Petrak

Creator:

Capitano, Bryan R.

Abstract:

Phaeocryptopus gaeumannii is a pathogenic fungus on Douglas-fir needles which has become a serious threat to timber production in the last decade along the Oregon coast This research was undertaken to describe the general biology and pathology of F. gaeumannii on Douglas-fir needles and how environmental variables affect fungal development....

Resource Type:

Masters Thesis

Full Text:

submitted to Oregon State University in partial fulfillment of the requirements for the degree of Master
Trichoderma spp. : distribution in stumps infested with Phellinus weirii and growth and antagonism in vitro

Creator:

Goldfarb, Barry

Abstract:

To determine which isolates will most rapidly replace Phellinus weirii in stumps and roots, Trichoderma spp. were isolated from P. weirii-infested stumps and roots, identified, and examined for growth rates and lethal effects on P. weirii in vitro. Phellinus weirii-infested Douglas-fir stumps and stump roots were sampled for microorganisms by...

Resource Type:

Masters Thesis

Full Text:

A THESIS submitted to Oregon State University in partial fulfillment of the requirements for the

« Previous
Next »
1
2

Limit your search

Academic Affiliation

Botany and Plant Pathology[remove]17
Wood Science and Engineering1

Advisor

Hansen, Everett M.[remove]17
Morrell, Jeffrey J.1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1980 to 2015

View distribution

Committee Member

Parke, Jennifer L.2
Stone, Jeffrey2
Bradshaw, Gay1
Cromack, Kermit1
Fassnacht, Karin1
more Committee Members »

Creator

Capitano, Bryan R.1
Goldfarb, Barry1
Hamm, Philip B.1
Hessburg, Paul F.1
Hulbert, Joseph M.1
more Creators »

Date

Date range begin – Date range end

Current results range from 1979 to 2014

View distribution

Decade

2010-20194
2000-20095
1990-19993
1980-19894
1970-19791

Degree Field

Botany and Plant Pathology13
Botany3
Plant Pathology1
Wood Science1

Degree Level

Master's10
Doctoral7

Degree Name

Master of Science (M.S.)10
Doctor of Philosophy (Ph.D.)7

File Format

application/pdf1

Language

English [eng]17

License

All rights reserved6

Non-Academic Affiliation

Oregon State University. Graduate School17

Peer Reviewed

No17

Resource Type

Masters Thesis10
Dissertation7

Rights Statement

Copyright Not Evaluated10
In Copyright7

Subject

Douglas fir2
Douglas fir -- Diseases and pests2
Phytophthora -- Oregon, Western2
Alder -- Diseases and pests -- Oregon, Western1
Conifers -- Diseases and pests -- British Columbia1
more Subjects »

Scholars Archive is a service of Oregon State University Libraries & Press

121 The Valley Library
Corvallis, OR 97331-4501

Contact Us
Services for Persons with Disabilities

Powered by Hyrax 3.6.0

Copyright © 2018 Oregon State University
Licensed under the Apache License, Version 2.0

Core Trust application (pdf)