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• 1. [Article] Water and nutrient competition with cover crops in Willamette Valley vineyards. Final Report Northwest Center for Small Fruits Research 2004-2005 funding

  Objectives: I. To evaluate the effects of five cover crop mixes on grapevine: a) water stress b) nutrient status c) fruit production and quality d) shoot growth e) mycorrhizal colonization. II. To evaluate ...

  Citation × Citation Citation Abstract Copy Title: Water and nutrient competition with cover crops in Willamette Valley vineyards. Final Report Northwest Center for Small Fruits Research 2004-2005 funding Author: Schreiner, R. Paul, Sweet, Rebecca Objectives: I. To evaluate the effects of five cover crop mixes on grapevine: a) water stress b) nutrient status c) fruit production and quality d) shoot growth e) mycorrhizal colonization. II. To evaluate cover crop mixes for their: a) establishment rate b) biomass production c) nutrient content. Title: Water and nutrient competition with cover crops in Willamette Valley vineyards. Final Report Northwest Center for Small Fruits Research 2004-2005 funding Author: Schreiner, R. Paul, Sweet, Rebecca Objectives: I. To evaluate the effects of five cover crop mixes on grapevine: a) water stress b) nutrient status c) fruit production and quality d) shoot growth e) mycorrhizal colonization. II. To evaluate cover crop mixes for their: a) establishment rate b) biomass production c) nutrient content. Close

• 2. [Article] Manipulating Soil Moisture and Nitrogen Availability Part II: Effects on Pinot noir Must and Wine Composition

  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 ...

  Citation × Citation Citation Abstract Copy Title: Manipulating Soil Moisture and Nitrogen Availability Part II: Effects on Pinot noir Must and Wine Composition Author: Watson, Barney, Godard, Mee, Chen, Hsiao-Ping 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. The effects ofthese viticultural practices on juice and must composition, fermentable nitrogen content, fermentation behavior, wine composition, aroma, flavor, and wine quality are being conducted over several vintages at a mature commercial Pinot noir vineyard in the southern Willamette Valley of Oregon. Title: Manipulating Soil Moisture and Nitrogen Availability Part II: Effects on Pinot noir Must and Wine Composition Author: Watson, Barney, Godard, Mee, Chen, Hsiao-Ping 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. The effects ofthese viticultural practices on juice and must composition, fermentable nitrogen content, fermentation behavior, wine composition, aroma, flavor, and wine quality are being conducted over several vintages at a mature commercial Pinot noir vineyard in the southern Willamette Valley of Oregon. Close

• 3. [Article] 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

  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 ...

  Citation × Citation Citation Abstract Copy Title: 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 Author: Schreiner, R. Paul 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 growing season to collect samples for specific nutrients (N,P,K) to diagnose sub-optimal concentrations, and 3) to identify indicators (physiological or visual) of sub-optimal nutrient levels that growers can utilize to better manage winegrape nutrition. Specific Objectives for 2006: 1) Apply different levels of N, P, and K to 4 year-old vines and monitor growth, nutrient status, gas exchange and photochemistry responses to treatments. 2) Assess impact of nutrient status on fruit quality. Title: 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 Author: Schreiner, R. Paul 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 growing season to collect samples for specific nutrients (N,P,K) to diagnose sub-optimal concentrations, and 3) to identify indicators (physiological or visual) of sub-optimal nutrient levels that growers can utilize to better manage winegrape nutrition. Specific Objectives for 2006: 1) Apply different levels of N, P, and K to 4 year-old vines and monitor growth, nutrient status, gas exchange and photochemistry responses to treatments. 2) Assess impact of nutrient status on fruit quality. Close