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Filtering by: Creator Butler, Barbara A. Remove constraint Creator: Butler, Barbara A. Academic Affiliation Crop and Soil Science Remove constraint Academic Affiliation: Crop and Soil Science Degree Level Doctoral Remove constraint Degree Level: Doctoral Rights Statement In Copyright Remove constraint Rights Statement: In Copyright

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Gene flow from transgenic glyphosate-resistant creeping bentgrass (Agrostis stolonifera L.) at the landscape level

Creator:

Zapiola, Maria Luz

Abstract:

Creeping bentgrass (Agrostis stolonifera L.) is an outcrossing, small- seeded, perennial grass that can establish outside of cultivation and has several compatible relatives. Glyphosate is a nonselective, broad spectrum, herbicide. Transgenic glyphosate-resistant (GR) creeping bentgrass (GRCB) was developed by The Scotts Company and Monsanto, but is still under USDA-APHIS regulated...

Resource Type:

Dissertation

Full Text:

involved in the improvement of the manuscript. Mr. Marvin Butler was a valuable support during the in
Small broomrape (Orobanche minor) management using wheat (Triticum aestivum) as a false host

Creator:

Al-thahabi, Salam A.

Abstract:

Small broomrape (Orobanche minor) is an obligate, chlorophyll-lacking parasite that parasitizes red clover (Trifolium pratense) roots. This study was conducted to develop and implement an integrated, biologically based control program for small broomrape by using wheat as a false host to reduce the soil seed bank. The relationship between temperature...

Resource Type:

Dissertation

Full Text:

DISSERTATION OF Salam A. Al-thahabi for the degree of Doctor of Philosophy in Crop Science presented on
Potential impacts of canola (Brassica napus L.) on vegetable seed production in the Willamette Valley of Oregon

Creator:

Quinn, Michael P.

Abstract:

In the Willamette Valley of Oregon, a combination of the need for rotational crops and an increased desire for biofuel production created interest in planting Brassica napus (canola). However, questions were raised arisen over the potential damage canola production could have on the preexisting Brassica vegetable seed industry. To address...

Resource Type:

Dissertation

Full Text:

approved: Carol A. Mallory-Smith In the Wilametle Valley of Oregon, a combination of the need for
Vernalization requirements and seed dormancy of jointed goatgrass (Aegilops cylindrica)

Creator:

Fandrich, Lynn

Abstract:

Jointed goatgrass (Aegilops cylindrica Host) infestations in winter wheat (Triticum aestivum L.) production regions of the central and western USA result in severe economic losses in the wheat market. Field and greenhouse studies were conducted to determine the vernalization requirements of winter wheat, spring wheat, jointed goatgrass, and wheat by...

Resource Type:

Dissertation

Full Text:

. Detailed observations in the greenhouse revealed a longer period between jointing and anthesis for most
Hybridization between imidazolinone-resistant wheat (Triticum aestivum L.) and jointed goatgrass (Aegilops cylindrical Host.) and selection pressure impacts on proportion of resistance alleles

Creator:

Martins, Bianca Asssis Barbosa

Abstract:

Imazamox-resistant wheat (Clearfield®) cultivars carry the Imi1 gene, which confers resistance to the imidazolinone (IMI) herbicide imazamox. Imazamox provides selective control of jointed goatgrass and other weeds in IMI-resistant wheat. Imi1 gene flow between IMI-resistant wheat and jointed goatgrass may occur via hybridization and backcross events. In 2009 and 2010,...

Resource Type:

Dissertation

Full Text:

: _____________________________________________________________________ Carol A. Mallory-Smith Imazamox-resistant wheat (Clearfield®) cultivars carry the Imi1
Microbial and biochemical dynamics of ectomycorrhizal mat and non-mat forest soils

Creator:

Kluber, Laurel A.

Abstract:

Dense hyphal mats formed by ectomycorrhizal (EcM) fungi are prominent features in Douglas-fir (Pseudotsuga menziesii) forest soils and have been estimated to cover up to 40% of the forest floor in some stands. Although previous studies have examined various aspects of EcM fungi, little is known about their associated microbial...

Resource Type:

Dissertation

Full Text:

AN ABSTRACT OF THE DISSERTATION OF Laurel A. Kluber for the degree of Doctor of Philosophy in
Development of predictive mapping techniques for soil survey and salinity mapping

Creator:

Elnaggar, Abdelhamid A.

Abstract:

Conventional soil maps represent a valuable source of information about soil characteristics, however they are subjective, very expensive, and time-consuming to prepare. Also, they do not include explicit information about the conceptual mental model used in developing them nor information about their accuracy, in addition to the error associated with...

Resource Type:

Dissertation

Full Text:

MAPPING TECHNIQUES FOR SOIL SURVEY AND SALINITY MAPPING ABDELHAMID A. ELNAGGAR
The link between nitrogen cycling and soil microbial community composition in forest soils of western Oregon

Creator:

Boyle, Stephanie A.

Abstract:

The objectives of this thesis were to examine the links between soil microbial community composition and function using the nitrogen (N) cycle as a model for these interactions and to assess the impact of environmental factors such as microclimate, vegetation type, and nutrient availability on microbial diversity and N transformations...

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Dissertation

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Stephanie A. Boyle for the degree of Doctor of Philosophy in Soil Science presented on March 15, 2007
The Impact of Freeze-Thaw Cycles to the Physical and Biogeochemical Properties of Alaskan Permafrost Soils

Creator:

Rooney, Erin C.

Abstract:

Arctic warming is exposing thawing permafrost to repeated freeze-thaw, a disruptive process that can alter soil biogeochemistry and physical structure. To investigate the impact of permafrost exposure to freeze-thaw, soil response was tested across three scales: 2.5 cm³ aggregates, a forested hillslope, and two sites at contrasting latitudes. XCT imaging...

Resource Type:

Dissertation

Full Text:

warming is exposing thawing permafrost to repeated freeze-thaw, a disruptive process that can alter soil
Using Algal Biomass as a Fertilizer

Creator:

Cappellazzi, Shannon B.

Abstract:

Algae can be used in a variety of wastewater systems to capture nutrients while fixing carbon dioxide from the atmosphere. I conducted field trials at three locations in Oregon with both corn and potato crops to assess the agronomic value and environmental impact of using the resulting algal biomass as...

Resource Type:

Dissertation

Full Text:

: Using Algal Biomass as a Fertilizer Abstract approved

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Academic Affiliation

Crop and Soil Science[remove]32

Advisor

Mallory Smith, Carol A.5
Mallory Smith, Carol4
Myrold, David D.4
Dick, Richard P.3
Kleber, Markus3
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 2006 to 2022

View distribution

Committee Member

Hulting, Andrew5
Kleber, Markus5
Bottomley, Peter J.4
Dragila, Maria3
Myrold, David D.3
more Committee Members »

Creator

Al Thahabi, Salam A.1
Almquist, Vance Warner1
Anderson, Nicole P.1
Avila Garcia, Wilson Vidal1
Belcher, Araby Ruth1
more Creators »

Contributor

Kleber, Markus1
Mundt, Christopher C.1
Zemetra, Robert S.1

Date

Date range begin – Date range end

Current results range from 2005 to 2022

View distribution

Unknown 1

Decade

2020-20294
2010-201916
2000-200911

Degree Field

Soil Science18
Crop Science14

Degree Level

Doctoral[remove]32

Degree Name

Doctor of Philosophy (Ph.D.)32

File Format

application/pdf8
pdf1

Language

English [eng]32

License

All rights reserved32

Non-Academic Affiliation

Oregon State University. Graduate School24

Peer Reviewed

No29

Resource Type

Dissertation32

Rights Statement

In Copyright[remove]32

Subject

Archaeological geology -- Cyprus1
Barley -- Disease and pest resistance1
Barley -- Genome mapping1
Barley -- Germplasm resources1
Bauhinia reticulata -- Nutrition -- Senegal1
more Subjects »

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