Index Catalog // ScholarsArchive@OSU

Susceptibility of Hop Crown Buds to Powdery Mildew and its Relation to Perennation of Podosphaera macularis

Creator:: Gent, David H., Claassen, Briana J., Twomey, Megan C., Wolfenbarger, Sierra N., and Woods, Joanna L.
Abstract:: In the Pacific Northwestern United States, the hop powdery mildew fungus, Podosphaera macularis, survives overwintering periods in association with living host tissue because the ascigerious stage of the pathogen is not known to occur in this region. Field experiments were conducted over a 5-year period to describe the overwintering process...
Resource Type:: Article
Full Text:: conducted over a 5-year period to describe the overwintering process associated with crown bud infection and

Crown Gall of Grape Rootstocks

Creator:: Miller, Marilyn L., Tooley, Katie, Ferguson, Kathleen, Toma, Kyle, Mentzer, Jessica, and Moore, Larry W.
Abstract:: Crown gall can develop on grapevines wounded by freezing temperatures, mechanical damage or grafting. Pathogenic agrobacteria residing within the vascular system are able to initiate tumor growth in damaged plant cells. Sampling from 21 sites in Oregon vineyards and nurseries yielded diverse populations of pathogenic agrobacteria. Most of the pathogenic...
Resource Type:: Technical Report
Full Text:: 420 A Milardet et de Grasset (V riparia X V. berlandieri) was the most susceptible to crown gall of

Resistance of Grape Rootstocks to Crown Gall

Creator:: Miller, Marilyn L., Tooley, Katie, Ferguson, Kathleen, Schindler, Clara, and Moore, Larry W.
Abstract:: Crown gall can develop on grapevines wounded by freezing temperatures, mechanical damage or grafting. Increased demand for grape varieties grafted to phylloxera resistant rootstocks has led to increased incidence of crown gall at graft unions. Therefore a search for plant material that is resistant to crown gall has been undertaken....
Resource Type:: Technical Report
Full Text:: resistant rootstocks has led to increased incidence of crown gall at graft unions. Therefore a search for

Interactions between fire and dwarf mistletoe in ponderosa pine

Creator:: Koonce, Andrea Lavender
Abstract:: The effects of dwarf mistletoe on fuel in precommercial ponderosa pine stands: Dwarf mistletoe and healthy stands were sampled by vertical planar intercept and whole tree biomass sampling techniques to measure fuel loading in ground and crown fuels. Differences in size, distribution, and vitality of fuel were shown to depend...
Resource Type:: Dissertation

Evaluation of Grape Rootstocks for Resistance to Crown Gall and Nematodes [1996-1997]

Creator:: Pinkerton, Jack and Miller, Marilyn
Abstract:: The nng nematode, Cnconenwlla xenoplax, has been reported to depress the vigor and yields of grapevines in Europe, California, Washington, and Michigan. Population densities of 500 C. xenoplax per kg of soil have reported to reduce vine yield 10-25% in California. A survey of Oregon vineyards found C. xenoplax in...
Resource Type:: Technical Report
Full Text:: Resistance to Crown Gall and Nematodes Jack Pinkerton, USDA-ARS Horticultural Crops Research Laboratory

Biological Soil Crusts of the Great Basin : An Examination of their Distribution, Recovery from Disturbance and Restoration

Creator:: Condon, Lea A.
Abstract:: We are at risk of losing the sagebrush steppe in the floristic Great Basin to the invasion of Bromus tectorum L., cheatgrass. The floristic Great Basin includes the Central Basin and Range, the Northern Basin and Range, and the Snake River Plain. The Great Basin receives most of its precipitation...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ David A. Pyke Bruce McCune We are at risk of losing the sagebrush steppe in the

Seed and seedling ecology of Artemisia tridentata in a restoration context

Creator:: Wijayratne, Upekala C.
Abstract:: The semi-arid sagebrush steppe ecosystem is one of the largest biomes in North America. The steppe provides critical habitat and forage for wildlife and is economically important to recreation and livestock industries. However, the ecosystem is threatened primarily due to several negative effects associated with expansion of the exotic annual...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ David A. Pyke Patricia S. Muir The semi-arid sagebrush steppe ecosystem is one of

Yield responses of invasive grasses to carbon doses

Creator:: Brunson, Jessi L.
Abstract:: The sagebrush steppe ecosystem of the northern Great Basin is severely degraded and continues to decline due in large part to the invasive, non-native annual grasses Bromus tectorum L. (cheatgrass) and Taeniatherum caput-medusae (L.) Nevski (medusahead). Restoration of invasive-dominated areas is difficult, but can be enhanced by adding a carbon...
Resource Type:: Masters Thesis
Full Text:: : David A. Pyke Patricia S. Muir The sagebrush steppe ecosystem of the northern Great Basin is

Science Takes Flight: Detection of Black Leg on Turnip Gray Mold on Hemp

Creator:: Bates, Taylor A.
Abstract:: Disease detection through traditional techniques such as scouting fields on foot, molecular assays, or morphological identification of plant pathogens is time consuming and costly. Disease diagnosis in the field can be extremely subjective, and largely depends on the experience and knowledge of pathogen identification and disease quantification. This thesis provides...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Taylor A. Bates for

Development and Testing of Bacteria Free Grapevines for Prevention of Crown Gall in Oregon Nurseries and Vineyards

Creator:: Miller, Marilyn L., Moore, Larry W., Mentzer, Jessica, Dierenfield, Lora, Ferguson, Kathleen, Candolfi-Vasconcelos, M. Carmo, and Castagnoli, Steve
Abstract:: Agrobacterium vitis is a bacterium that causes crown gall in grapevines. Plant injury from freezing temperatures or mechanical damage during cultivation often provide wounds required for infection to occur. Crown gall may kill grapevines and a new shoot is often brought up from the root to replace dead vines. Discovery...
Resource Type:: Technical Report
Full Text:: 97331-2902 Agrobacterium vitis is a bacterium that causes crown gall in grapevines. Plant injury from

ScholarsArchive@OSU

Susceptibility of Hop Crown Buds to Powdery Mildew and its Relation to Perennation of Podosphaera macularis

Crown Gall of Grape Rootstocks

Resistance of Grape Rootstocks to Crown Gall

Interactions between fire and dwarf mistletoe in ponderosa pine

Evaluation of Grape Rootstocks for Resistance to Crown Gall and Nematodes [1996-1997]

Biological Soil Crusts of the Great Basin : An Examination of their Distribution, Recovery from Disturbance and Restoration

Seed and seedling ecology of Artemisia tridentata in a restoration context

Yield responses of invasive grasses to carbon doses

Science Takes Flight: Detection of Black Leg on Turnip Gray Mold on Hemp

Development and Testing of Bacteria Free Grapevines for Prevention of Crown Gall in Oregon Nurseries and Vineyards

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