Development of Viticultural Practices to Improve Winegrape Performance : Experiment I: Effect of Irrigation on Ripening Dynamics, Photosynthetic Performance, and Canopy Development of Mature Pinot Noir Vines in the North Willamette Valley

Technical Report

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Citeable URL: https://ir.library.oregonstate.edu/concern/technical_reports/79408417n

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Attribute Name	Values
Creator	Howe, Jessica Candolfi-Vasconcelos, M. Carmo
Abstract	Most quality wines are produced in areas where annual precipitation is below 700 to 800 mm (Jackson & Schuster, 1994), and evidence suggests that high rainfall or excessive irrigation lowers quality. Excessive irrigation is reported to slow ripening, increase yields partially berry enlargement, elevate juice pH and acid content, and reduce anthocyanins due to shading. In contrast, water stress enhances early ripening but reduces yield, berry weight, and malic, acid from excessive exposure (Smart & Coombe, 1983). Evidence shows that water stress also reduces overall transpiration of grapevines (Smart 1974). Timing of water stress also contributes to changes in yield and berry sugar content (Alleweldt & Ruhl, 1982, Becker & Zimmerman, 1983).
Resource Type	Technical Report
Date Issued	1999
Academic Affiliation	Horticulture
Non-Academic Affiliation	Oregon Wine Research Institute
Series	Oregon Wine Advisory Board Research Progress Report
Urheberrechts-Erklärung	In Copyright
Publisher	Oregon Wine Advisory Board
Peer Reviewed	No
Language	English [eng]

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