Index Catalog // ScholarsArchive@OSU

Soil quality assessment of Willamette Valley soils and root colonization potential by arbuscular mycorrhizal fungi

Creator:: Allen, Natalie M.
Abstract:: Interest in measuring soil quality continues to increase worldwide in view of demands on land productivity and the necessity to preserve soil resources, yet identification of suitable indicators for soil quality assessment is still evolving. This study adapted 10 biological, physical, and chemical indicators of soil quality identified by the...
Resource Type:: Masters Thesis
Full Text:: her position. I would also like to extend my appreciations to my committee: Dan Sullivan, Paul

Facilitating plant-parasitic nematode management decisions for Washington Vitis vinifera growers : determining the spatial distribution of plant-parasitic nematodes and the host status of Vitis spp. to Meloidogyne hapla

Creator:: Howland, Amanda D.
Abstract:: A major constraint to the production of self-rooted wine grapes (Vitis vinifera) in eastern Washington is plant-parasitic nematodes. Plant-parasitic nematodes can impact grape productivity by limiting water and nutrient uptake, educing physiological changes, and extracting plant nutrients from roots, thereby reducing root biomass, plant vigor, and yield. The most commonly...
Resource Type:: Masters Thesis
Full Text:: , provided helpful advice, and always took time to help me. I would additionally like to thank Dan Sullivan

Influence of cover crop residue management on soil moisture, vine growth, and productivity in a pre-production vineyard in the Willamette Valley

Creator:: Curtis, Morgan A.
Abstract:: The use of cover crops in young vineyards is not widely accepted in the Pacific Northwest due to concerns of water and nutrient competition between the cover crop and vines. The last 2 years of a 4-year study started in 2009 are reported here. The study evaluated the use of...
Resource Type:: Masters Thesis
Full Text:: would like to thank Dan Sullivan for serving on my committee and his support, and Jay Pscheidt for

Effect of planting method, weed management, and fertilizer on plant growth and yield of newly established organic highbush blueberries

Creator:: Larco, Handell O.
Abstract:: A 0.4 ha planting of blueberry (Vaccinium corymbosum L.) was established in Oct. 2006 to evaluate the effects of cultivar (Duke and Liberty), planting method (flat versus raised beds), weed management (sawdust mulch and hand-weed control; compost plus sawdust mulch with acetic acid, flaming, and hand-weeding used as needed; and...
Resource Type:: Masters Thesis
Full Text:: , and my committee members Dr. David Bryla and Dr. Dan Sullivan for their deep thoughts and guidance

Improving nitrogen management with cover crops in organic broccoli production

Creator:: Garrett, Amy
Abstract:: Legume cover crops can serve as important sources of nitrogen (N) in sustainable agriculture and can be economically beneficial when fertilizer inputs are reduced without a yield reduction. Synchronizing N mineralization from organic materials with the needs of the subsequent crop is a challenge for organic growers. Predicting plant available...
Resource Type:: Masters Thesis
Full Text:: , especially Cody, Paul, Al, Micaela, my Dad and Holly. Dan Sullivan and Anita Azarenko for providing

Weeds With a Purpose: Interseeding Cover Crops into Sweet Corn in Western Oregon

Creator:: Donaldson, Andrew R.
Abstract:: Cover crop establishment in late-season crops, like sweet corn, may be difficult due to the relatively short operational window following crop harvest. In regions like western Oregon, where fall-precipitation can occur when the crop is still in the field, cover crops may not be able to be planted, due to...
Resource Type:: Masters Thesis
Full Text:: members. Dr. Dan Sullivan gave me the opportunity to manage several and Dr. Scott Lukas, and my Graduate

Weed, water, and nutrient management practices for organic blackberry during establishment

Creator:: Harkins, Renee H.
Abstract:: The study was conducted in an organic trailing blackberry (Rubus L. subgenus Rubus, Watson) planting established at the North Willamette Research and Extension Center in Aurora, OR on 26 May 2010. Three weed management systems were compared for 'Marion' and 'Black Diamond': 1) non-weeded; 2) hand-hoed two to three times...
Resource Type:: Masters Thesis
Full Text:: table and figure design and Dr. Dan Sullivan for his assistance and mentorship. Thanks also to the

Serial manure amendments : effects on soil properties and root rot of sweet corn

Creator:: Cox, Bonnie S. Hoffman
Abstract:: The effect of serial (multiple-year) organic matter (OM) amendment on soil properties has been described in some cropping systems, although less is known about the effect of serially amended field soils on soil-borne plant diseases. The objectives of this study were to describe the effects of the third and fourth...
Resource Type:: Masters Thesis
Full Text:: would also like to thank the other members ofmy committee: Dr. Dan Sullivan, Dr. Jim Myers, and Dr. Ken

Estimating crop yield and production changes as a function of irrigation deficit based on watershed and county level data

Creator:: Darakjian, Priscila
Abstract:: Response of agricultural crops to irrigation water deficit is well-understood at the field scale. Broader scale (watershed and county levels) studies have been less frequently performed. Data collection at the field level for extensive areas is time consuming and expensive. The importance of studies at a broader scale for evaluating...
Resource Type:: Masters Thesis
Full Text:: the draft review. I greatly appreciate it. I am also grateful to my graduate representative, Dr. Dan

Cover crop effects on root rot of sweet corn and soil properties

Creator:: Miyazoe, Mikio
Abstract:: Root rot of sweet corn in western Oregon and Washington is a significant disease that can reduce yield of intolerant cultivars of processed sweet corn by fifty percent. Root rot is caused by a complex of soilborne organisms, including Drechslera sp., Phoma terrestris, and Pythium arrhenomanes. Processors have adopted tolerant...
Resource Type:: Masters Thesis
Full Text:: member of my committee: Dr. Dan Sullivan, Dr. Ed Peachey, and Dr. Sabry Elias for their contribution

ScholarsArchive@OSU

Soil quality assessment of Willamette Valley soils and root colonization potential by arbuscular mycorrhizal fungi

Facilitating plant-parasitic nematode management decisions for Washington Vitis vinifera growers : determining the spatial distribution of plant-parasitic nematodes and the host status of Vitis spp. to Meloidogyne hapla

Influence of cover crop residue management on soil moisture, vine growth, and productivity in a pre-production vineyard in the Willamette Valley

Effect of planting method, weed management, and fertilizer on plant growth and yield of newly established organic highbush blueberries

Improving nitrogen management with cover crops in organic broccoli production

Weeds With a Purpose: Interseeding Cover Crops into Sweet Corn in Western Oregon

Weed, water, and nutrient management practices for organic blackberry during establishment

Serial manure amendments : effects on soil properties and root rot of sweet corn

Estimating crop yield and production changes as a function of irrigation deficit based on watershed and county level data

Cover crop effects on root rot of sweet corn and soil properties

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