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Filtering by: Subject Land use -- Oregon -- Willamette River Valley Remove constraint Subject: Land use -- Oregon -- Willamette River Valley Degree Field Botany and Plant Pathology Remove constraint Degree Field: Botany and Plant Pathology License All rights reserved Remove constraint License: All rights reserved

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Dynamics of Zymoseptoria tritici Fungicide Resistance in the Willamette Valley of Oregon

Creator:

Hagerty, Christina H.

Abstract:

The development of resistance to multiple fungicide classes is currently limiting disease management options for many pathogens, while the discovery of new fungicide classes has become less frequent. To address this pressing issue, a three-part study with different layers of complexity, objectives, and experimental approaches was conducted using the model...

Resource Type:

Dissertation

Full Text:

Resistance in the Willamette Valley of Oregon. Abstract approved
Mulching to Manage Mummy Berry of Blueberry

Creator:

Florence, Jade

Abstract:

Monilinia vaccinii-corymbosi pseudosclerotia overwinter on the soil surface and produce apothecia in early spring, providing primary inoculum for Mummy Berry Disease of blueberry. Burial under 2.5 cm of soil or the absence of light have previously been identified as critical factors preventing the development of apothecia. Mulches were applied to...

Resource Type:

Dissertation

Full Text:

collaborator field sites in the Willamette Valley. Mulch depth loss was also assessed at the end of the
Presence and pathogenicity of Fusarium and Verticillium species in commercial red radish (Raphanus sativus) seed production in the Willamette Valley of Oregon

Creator:

Bomberger, Rachel A.

Abstract:

Commercial radish seed producers in the Willamette Valley of Oregon have observed a late season wilt in their seed fields. Twenty-two fields were surveyed for wilt in the Willamette Valley during June through August 2012 and 2013. Plants exhibiting wilt symptoms were collected from the fields and examined for vascular...

Resource Type:

Masters Thesis

Full Text:

(Raphanus sativus) Seed Production in the Willamette Valley of Oregon. Abstract Approved
Recruitment predictors of an endangered prairie species : a case study of Erigeron decumbens

Creator:

Gallagher, Katie J.

Abstract:

Preservation of rare plant species often requires establishment of new populations. Survivorship surveys are the most common method of post-introduction monitoring. However, they provide an incomplete picture of establishment success. This study is an attempt to develop a model for determining establishment success by determining the factors affecting recruitment in...

Resource Type:

Masters Thesis

Full Text:

species. Erigeron decumbens is an endangered forb endemic to the Willamette Valley of western Oregon
Factors affecting establishment and germination of upland prairie species of conservation concern in the Willamette Valley, Oregon

Creator:

Jones, Katherine D.

Abstract:

Identifying mechanisms that determine who lives and dies is the first step in developing successful restoration techniques for rare species and endangered habitats. We studied interactions that affect establishment of native plant forbs of conservation concern at the seedling stage to support the theoretical basis for restoration activities in Pacific...

Resource Type:

Masters Thesis

Full Text:

Conservation Concern in the Willamette Valley, Oregon Abstract approved
Stream DOC, nitrate, chloride and SUVA response to land use during winter baseflow conditions in sub-basins of the Willamette River Basin, OR

Creator:

Frentress, Jay

Abstract:

To better understand the impact of land use on stream nutrient export, a synoptic sampling of 57 sub-basins within the Willamette River basin was conducted during winter baseflow conditions (February 2009). I assessed whether stream dissolved organic carbon (DOC), NO₃⁻ and Cl⁻ and specific ultra-violet absorbance (SUVA) values were correlated...

Resource Type:

Masters Thesis
The effects of site preparation on native forb establishment in a wet prairie, Willamette Valley, Oregon

Creator:

Norman, Katherine N.

Abstract:

Wetlands and wet prairies are economically and environmentally valuable ecosystems, but many have been degraded or converted to other uses. As human understanding of wetlands' value has increased, restoration efforts have grown correspondingly. Restoration attempts use a diversity of methods, which often include seeding with native plant species. This thesis...

Resource Type:

Masters Thesis

Full Text:

Establishment in a Wet Prairie, Willamette Valley, Oregon Abstract approved: Patricia S. Muir
Functional groups, traits, and the performance of species in restoration

Creator:

Roberts, Rachael E. (Rachael Elaine)

Abstract:

In ecological restoration, species that are sown to increase the native plant diversity range in establishment ability. Some species readily establish, while others rarely do. This study set out to investigate some of the potential processes influencing species establishment, as well as the traits that are associated with the success...

Resource Type:

Masters Thesis

Full Text:

this study, native to upland prairies in the Willamette Valley of Oregon
Responses and relationships among Fusarium species, sweet corn, and western spotted cucumber beetles

Creator:

Miller, Nathan L. (Nathan Louis)

Abstract:

Sweet corn (Zea mays L.) yields in the Willamette Valley of Oregon have been declining since the early 1990’s. Studies were done to determine if there is a relationship between ear weight and several disease parameters including necrotic crowns or stalk nodes, nodal root rot, radicle root rot, and sub-crown...

Resource Type:

Dissertation

Full Text:

(Zea mays L.) yields in the Willamette Valley of Oregon have been declining since the early 1990’s
Performance of Willamette Valley native plants following herbicide exposure

Creator:

Blakeley-Smith, Matthew R.

Abstract:

Prairies were once the dominant vegetation type in Oregon's Willamette Valley. Land use conversion, fire suppression, succession, and invasive species have reduced Willamette Valley prairies to less than 1% of their historical area. The remnant prairies that persist today are small in size and are highly fragmented. Marginal strips of...

Resource Type:

Masters Thesis

Full Text:

vegetation type in Oregon's Willamette Valley. Land use conversion, fire suppression, succession, and

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Academic Affiliation

Botany and Plant Pathology13

Advisor

Kaye, Thomas N.3
Wilson, Mark V.2
Clark, Deborah L.1
Jones, Julia1
Lajtha, Kate1
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Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 2000 to 2017

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Committee Member

Liston, Aaron2
Parke, Jennifer2
Seabloom, Eric2
Bachelet, Dominique1
Braunworth, Bill1
more Committee Members »

Creator

Bartels, Marilynn R.1
Blakeley Smith, Matthew R.1
Bomberger, Rachel A.1
Florence, Jade1
Frentress, Jay1
more Creators »

Date

Date range begin – Date range end

Current results range from 2000 to 2016

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Decade

2010-20196
2000-20097

Degree Field

Botany and Plant Pathology[remove]13
Water Resources Science1

Degree Level

Master's10
Doctoral3

Degree Name

Master of Science (M.S.)10
Doctor of Philosophy (Ph.D.)3

File Format

application/pdf4

Language

English [eng]13

License

All rights reserved[remove]13

Non-Academic Affiliation

Oregon State University. Graduate School13

Peer Reviewed

No10

Resource Type

Masters Thesis10
Dissertation3

Rights Statement

In Copyright13

Subject

Fusarium diseases of plants -- Oregon -- Willamette River Valley2
Fusarium oxysporum -- Oregon -- Willamette River Valley2
Prairie plants -- Ecology -- Oregon -- Willamette River Valley2
Prairie restoration -- Oregon -- Willamette River Valley2
Agricultural pollution -- Oregon -- Willamette River Watershed1
more Subjects »

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