Index Catalog // ScholarsArchive@OSU

An engineers approach to irrigation management in Oregon Pinot noir

Creator:: Selker, John and Baer, Emilie
Abstract:: Vineyard managers must decide on the timing and amount of irrigation. In Oregon the need for irrigation differs greatly year to year and field to field based on micro climate, soil, root development, plant health, and root stock. We suggest the use of leaf water potential as a useful management...
Resource Type:: Technical Report

An Inventory of Oregon's Vineyard Sites and Soils : The First Year of the Oregon Vineyard Soil and Nutrition Initiative

Creator:: Campbell, Alan
Abstract:: The report below and displays in the lobby summarize the first-year activities of the Oregon Vineyard Soil and Nutrition Initiative. This work has laid the foundations for OVID, the Oregon Vineyard Database, which will fill the second year of OVSNI and is discussed in the final sections.
Resource Type:: Technical Report

Assimilate Partitioning in Vitis vinifera During the Reproductive Period

Creator:: Finger, Sarah A. and Candolfi-Vasconcelos, M. Carmo
Abstract:: Objectives of proposed research: 1. Investigate the relationship between abscisic acid (ABA) and auxins and the regulation of carbon partitioning. 2. Investigate the origin of ABA present in the fruit during ripening and attempt to modify the partitioning pattern through manipulation of endogenous ABA levels using mefluidide (ABA biosynthesis promoter)...
Resource Type:: Technical Report

Control of Hydrogen Sulfide Formation during Fermentation

Creator:: Bakalinsky, Alan, Martin, Olga, and Kennedy, James A.
Abstract:: Hydrogen sulfide and related sulfur compounds produced internally by yeast during fermentation are considered highly undesirable if they are excreted and exceed threshold concentrations in the finished wine, as they cause an unpleasant "reduced character". The threshold for hydrogen sulfide is on the order of parts per billion and that...
Resource Type:: Technical Report

Development of Anthocyanins and Tannins in Pinot noir Grapes and their Relative Importance in Wine [2002]

Creator:: Kennedy, James A., Godard, Mee, and Watson, Barney
Abstract:: The objectives of this research project are to understand tannin and anthocyanin changes during berry development in Pinot noir fruit and wines. Specifically, the objectives of this research project are: · Determine the effect of berry development on the composition of tannins in cv. Pinot noir berries · Determine the...
Resource Type:: Technical Report

Development of Anthocyanins and Tannins in Pinot noir Grapes and their Relative Importance in Wine [2003]

Creator:: Kennedy, James A., Pastor, Jose Luis, and Watson, Barney
Abstract:: The objectives of this research are to monitor tannin and anthocyanin changes during berry development and over several growing seasons to understand how the vintage effects wine composition. Specifically, the objectives of this research project are : · Determine the effect of berry development on the composition of phenolics (tannins...
Resource Type:: Technical Report

Development of Aroma Compounds in Pinot noir Grapes and their Relative Importance in Wine (Year 1)

Creator:: Qian, Michael and Fang, Yu
Abstract:: Color stability and flavor are two of the most important aspects of red wine quality. The development of anthocyanins and tannins in Pinot noir grapes and their relative importance in wine has been under investigation by Dr. James Kennedy. Flavor development, however, is not well understood. Several gas chromatography/olfactometry techniques...
Resource Type:: Technical Report

Effect of Vineyard Cover Crop Management on Grape and Wine Quality II: Grape Composition and Wine Aroma

Creator:: Qian, Michael
Abstract:: Objective(s) of Proposed Research or Outreach Project: 1. Investigate cover crop management in commercial vineyards on aroma and aroma precursor composition in grapes. 2. Investigate cover crop management in commercial vineyards on flavor quality of wine. 3. Investigate the feasibility to use aroma and aroma precursor analysis in grapes as...
Resource Type:: Technical Report

Effects of Crop Level on Fruit Composition of Pinot noir Grapes

Creator:: Brasher, Erik and Candolfi-Vasconcelos, M. Carmo
Abstract:: A broad range of factors influences wine grape quality and its manipulation has stimulated interest among grape growers, wine makers, and research scientists alike. One such factor affecting wine grape quality is crop level, particularly for Pinot noir. Since the capacity of a vine to ripen fruit depends largely on...
Resource Type:: Technical Report

Effects of Vine Defoliation on Pinot noir Fruit and Wine Quality

Creator:: Sandrock, Jessica Howe and Azarenko, Anita Nina
Abstract:: The objectives of this study are to determine: • How the time of leaf pulling affects Pinot noir fruit quality and composition • How the intensity of leaf pulling affects Pinot noir fruit quality and composition • If there is a difference in fruit quality and composition when lateral leafs...
Resource Type:: Technical Report

Evaluation of Clonal Selections of Merlot, and Performance of Sangiovese, Tempranillo, Syrah, and Viognier in Southern Oregon

Creator:: Watson, Barney, Sugar, David, and Candolfi-Vasconcelos, M. Carmo
Abstract:: The objectives of the trial are to evaluate Merlot clones and the varieties Sangiovese, Tempranillo, Syrah, and Viognier for production characteristics, maturity and fruit composition at harvest, and wine composition and wine quality in order to evaluate their potential for commercial wine grape production in warmer wine growing regions in...
Resource Type:: Technical Report

Evaluation of nematode resistant grape rootstock for managing Mesocriconema xenoplax. Proceedings Progress Report Northwest Center for Small Fruits Research 2006

Creator:: Schreiner, R. Paul, Pinkerton, John N., and Bryla, David
Abstract:: Objectives: To evaluate the impact of the ring nematode, Mesocriconema xenoplax on the physiology and productivity of phylloxera-resistant grape rootstocks as a basis for recommending rootstocks in the Pacific Northwest. Specific objectives for 2006: Spring: Inoculate soil with AMF and M. xenoplax. Plant vines. Growing season: Monitor plant growth, gas...
Resource Type:: Technical Report

Evaluation of phylloxera-resistant rootstocks for the cultivars Pinot noir, Chardonnay, Pinot gris and Merlot

Creator:: Shaffer, Ray and Candolfi-Vasconcelos, M. Carmo
Abstract:: Vineyard acreage in Oregon continues to increase at a rapid pace. In the past two years alone 1600 acres of new vineyard land have been planted (Rowley et al., 2000). Much of this has been on phylloxera-resistant rootstocks. This practice is strongly encouraged, since it is the only practical way...
Resource Type:: Technical Report

Evaluation of the Performance of Pinot noir Grafted to Five Rootstocks: Final Report 1995-2001

Creator:: Candolfi-Vasconcelos, M. Carmo
Abstract:: The advent of phylloxera in Oregon led to an urgent need for the evaluation of the viticultural characteristics of rootstocks with the potential for adaptation to Oregon, a cool climate grape production zone with low pH soils. The research reported here is a long-term study on the effect of rootstock...
Resource Type:: Technical Report

Evaluation of varieties, clones and rootstocks Evaluation of Vitis Rootstocks for Tolerance to Low Soil pH

Creator:: Taylor, Patrick, Candolfi-Vasconcelos, M. Carmo, and Baham, John
Abstract:: Extensive information on rootstock resistance to lime is available since it has been one of the major selection criteria in Europe an rootstock breeding programs. Information regarding the performance of rootstocks in acidic soils however, is not so prevalent. Differences in genotype tolerance to high acidity maybe related to different...
Resource Type:: Technical Report

Identifying Optimal Nutrient Concentrations for Premium Winegrape Production Based on Physiological Needs and Fruit Quality. Proceedings Progress Report Northwest Center for Small Fruits Research 2006

Creator:: Schreiner, R. Paul
Abstract:: Objectives of Proposed Research: The goals of this project for the next few years are: 1) to develop optimal tissue nutrient levels for N, P, and K in winegrapes that are based on physiological performance and fruit quality, 2) to identify the best tissue (leaf vs. petiole) and time of...
Resource Type:: Technical Report

Manipulating Soil Moisture and Nitrogen Availability Part II. Fermentable Nitrogen Content and Must and Wine Composition

Creator:: Watson, Barney, Wall, Kate, Specht, Anna, Chen, Hsiao-Ping, and McDaniel, Mina
Abstract:: An approximation of the total yeast fermentable nitrogen content in juice or must is taken as the sum of the nitrogen available from ammonia and the alpha-amino acids present (Bisson 1991 ; Dukes and Butzke 1998 ; Jiranek, Langridge, and Henshcke 1995). Recommended levels of fermentable nitrogen needed by yeast...
Resource Type:: Technical Report

Manipulating Soil Moisture and Nitrogen Availability Part II: Effects on Pinot noir Must and Wine Composition

Creator:: Watson, Barney, Godard, Mee, and Chen, Hsiao-Ping
Abstract:: The objectives of this study are to evaluate the effects of manipulating soil moisture and nitrogen availability using different approaches, including supplemental irrigation, nitrogen addition to the soil or to the leaves, and the elimination of competition for water and nutrients between the ground cover and the grapevines by tilling....
Resource Type:: Technical Report

Manipulating Soil Moisture and Nitrogen Availability to Improve Fermentation Behavior and Wine Quality. Part I: Vine Physiological Performance, Yield Components, Ripening Dynamics, and Fruit Composition

Creator:: Howe, Jessica and Candolfi-Vasconcelos, M. Carmo
Abstract:: This study integrates various vineyard practices that may improve nitrogen availability to the vine, particularly during ripening. Different strategies aimed at improving fermentation behavior and wine quality are being evaluated. This study aims to optimize fruit quality and maximize the juice nitrogen fraction that can be used by yeast during...
Resource Type:: Technical Report

Manipulating Soil Moisture and Nitrogen Availability to Improve Fermentation Behavior and Wine Quality. Part I: Vine Physiological Performance, Yield Components, Ripening Dynamics, and Fruit Composition

Creator:: Silva, Elisabete, Sampaio, Tiago, and Candolfi-Vasconcelos, M. Carmo
Abstract:: This study integrates various vineyard practices that may improve nitrogen availability to the vine, particularly during ripening . Different strategies aimed at improving fermentation behavior and wine quality are being evaluated. This study aims to optimize fruit quality and maximize the juice nitrogen fraction that can be used by yeast...
Resource Type:: Technical Report

ScholarsArchive@OSU

An engineers approach to irrigation management in Oregon Pinot noir

An Inventory of Oregon's Vineyard Sites and Soils : The First Year of the Oregon Vineyard Soil and Nutrition Initiative

Assimilate Partitioning in Vitis vinifera During the Reproductive Period

Control of Hydrogen Sulfide Formation during Fermentation

Development of Anthocyanins and Tannins in Pinot noir Grapes and their Relative Importance in Wine [2002]

Development of Anthocyanins and Tannins in Pinot noir Grapes and their Relative Importance in Wine [2003]

Development of Aroma Compounds in Pinot noir Grapes and their Relative Importance in Wine (Year 1)

Effect of Vineyard Cover Crop Management on Grape and Wine Quality II: Grape Composition and Wine Aroma

Effects of Crop Level on Fruit Composition of Pinot noir Grapes

Effects of Vine Defoliation on Pinot noir Fruit and Wine Quality

Evaluation of Clonal Selections of Merlot, and Performance of Sangiovese, Tempranillo, Syrah, and Viognier in Southern Oregon

Evaluation of nematode resistant grape rootstock for managing Mesocriconema xenoplax. Proceedings Progress Report Northwest Center for Small Fruits Research 2006

Evaluation of phylloxera-resistant rootstocks for the cultivars Pinot noir, Chardonnay, Pinot gris and Merlot

Evaluation of the Performance of Pinot noir Grafted to Five Rootstocks: Final Report 1995-2001

Evaluation of varieties, clones and rootstocks Evaluation of Vitis Rootstocks for Tolerance to Low Soil pH

Identifying Optimal Nutrient Concentrations for Premium Winegrape Production Based on Physiological Needs and Fruit Quality. Proceedings Progress Report Northwest Center for Small Fruits Research 2006

Manipulating Soil Moisture and Nitrogen Availability Part II. Fermentable Nitrogen Content and Must and Wine Composition

Manipulating Soil Moisture and Nitrogen Availability Part II: Effects on Pinot noir Must and Wine Composition

Manipulating Soil Moisture and Nitrogen Availability to Improve Fermentation Behavior and Wine Quality. Part I: Vine Physiological Performance, Yield Components, Ripening Dynamics, and Fruit Composition

Manipulating Soil Moisture and Nitrogen Availability to Improve Fermentation Behavior and Wine Quality. Part I: Vine Physiological Performance, Yield Components, Ripening Dynamics, and Fruit Composition

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