Index Catalog // ScholarsArchive@OSU

Yield Adjustment Research [1994-1995]

Creator:: Price, Steve, Watson, Barney, and Valladao, Marilin
Abstract:: Variability in fruit set and yield is a serious problem in Oregon viticulture, particularly with Pinot noir. Climatic variation during the flowering period contributes significantly to this problem by affecting fruit set and cluster weight. Cool wet weather during bloom results in poor set, small clusters, and low yields. Seasons...
Resource Type:: Technical Report

Yield Adjustment

Creator:: Price, Steve, Lombard, Porter, and Watson, Barney
Abstract:: In the past ten years, variation in Oregon vineyard yields has come from two main causes: winter injury and inconsistent fruit set. Together these factors have caused significant yield variation in almost every Oregon vineyard. In 1991, a research project was started at Oregon State to develop and evaluate a...
Resource Type:: Technical Report

Varieties, Clones, and Rootstocks

Creator:: Price, Steve, Watson, Barney, and Clark, Beverly
Abstract:: The introduction and evaluation of new planting material for the Oregon wine industry has been one of the top priorities of OSU and Oregon Wine Advisory Board (OWAB) for many years. The emphasis at OSU has been on two main objectives: to facilitate the introduction of new material into commercial...
Resource Type:: Technical Report

Sun Exposure and Grape Phenolics

Creator:: Price, Steve and Watson, Barney
Abstract:: Phenolic compounds are key quality components of wine affecting sensory characteristics, wine color, and wine stability. Phenolics are responsible for much of the mouth flavor of wines affecting astringency, bitterness, and the "length" of the flavor impression on the palate. The color in both red and white wine is due...
Resource Type:: Technical Report

Pinot noir Processing Effects on Wine Color and Phenolics [1994-1995]

Creator:: Watson, Barney and Price, Steve
Abstract:: We have studied commercial fermentation practices for three vintages in order to learn how they affect extraction and stability of anthocyanin pigments and other phenolic compounds in Pinot noir. Wines were monitored during fermentation, processing, and aging for anthocyanin and phenolic content, color intensity, and for phenolic profiles using high...
Resource Type:: Technical Report

Pinot noir Processing Effects on Wine Color and Phenolics [1992-1993]

Creator:: Watson, Barney and Price, Steve
Abstract:: Different fermentation practices are generally believed to affect wine composition and wine quality of Pinot noir. Oregon winemakers, for example, commonly attribute differences in color and phenolic extraction to differences in processing. There is, however, little information from replicated trials with controls demonstrating the cause and affect of these perceived...
Resource Type:: Technical Report

Pinot noir Maturity and Harvest Information

Creator:: Watson, Barney and Price, Steve
Abstract:: A Pinot noir maturity study began in 1987 at WoodhaU Vineyards in Alpine to monitor the compositional changes that occur during ripening. Extensive fruit sampling and analysis has been done throughout the ripening period for six years. In several years replicated wine lots were also produced from fruit harvested on...
Resource Type:: Technical Report

Pinot noir Fermentation Processing Effects on Wine Color and Phenolics

Creator:: Watson, Barney and Price, Steve
Abstract:: Oregon Pinot noir wines differ greatly in their color and phenolic profiles and this variability is due to both vineyard and to fermentation management practices. We have observed that Pinot noir fruit composition can vary significantly with vintage, with degree of maturity, with yields, with trellis systems, and with the...
Resource Type:: Technical Report

Pinot noir Clonal Trial

Creator:: Price, Steve and Watson, Barney
Abstract:: Pinot noir is Oregon's most important wine grape variety, representing 38% of the state's total wine production. Oregon State University began importing Pinot noir clones from California and France in the 1970's to insure that Oregon growers had access to the full range of clonal types. Almost all of the...
Resource Type:: Technical Report

Phenolic Compounds in Grapes and Wine

Creator:: Price, Steve and Watson, Barney
Abstract:: In experiments in grape skin light transmission in 1991, we found that quercetin (a phenolic compound found in many plants) accumulates in sun exposed grape skin. The accumulation of quercetin in grape skins appeared to be a protective response to solar radiation and we were able to show that quercetin...
Resource Type:: Technical Report

Personnel Support for Enology Research and Extension

Creator:: Watson, Barney, Bakalinsky, Alan, Daeschel, Mark, and Strik, Bernadine C.
Abstract:: 1. To provide technical services and consultation for solving commercial winemaking problems. 2. To develop applied workshops and technical seminars for the continuing education and professional development of Oregon wine industry personnel. 3. To apply research results to commercial wine production to improve wine stability and quality. The Oregon wine...
Resource Type:: Technical Report

Performance of Pinot Noir and Chardonnay Clones

Creator:: Candolfi-Vasconcelos, M. Carmo, Castagnoli, Steve, and Watson, Barney
Abstract:: Pinot noir and Chardonnay are the two main varieties in Oregon. Together they comprise 60% of the Oregon winegrape acreage, and 61% of the total production for a value of $8,906 (66%). Clonal selection of Pinot noir and Chardonnay have made available a wide range of productivity and quality levels....
Resource Type:: Technical Report

Minimal Pruning

Creator:: Price, Steve, Lombard, Porter, and Watson, Barney
Abstract:: Traditional vineyard practices in Oregon are labor intensive and require large pools of available labor for pruning, shoot positioning, and harvest. A mechanized system of grape growing has been developed in Australia to eliminate almost all of the handwork involved with grape production. The cornerstone of this system is minimal...
Resource Type:: Technical Report

Lewis Brown Trellis Trial [1992-1993]

Creator:: Price, Steve and Watson, Barney
Abstract:: Trellis design and canopy management have been major research topics in viticulture during the last ten years. The article by Dave Adelsheim in the first edition of the "Oregon Winegrowers Guide" and the presentations of Shaulis, Smart, Carboneau, Intrerari and Koblet at the 1984 Cool Climate Symposium in Eugene were...
Resource Type:: Technical Report

Evaluation of Winegrape Varieties, Clones, and Rootstocks : 1990-1991

Creator:: Price, Steve, Lombard, Porter, Watson, Barney, and McDaniel, Mina R.
Abstract:: The Oregon wine industry is based on a relatively narrow genetic base of grape varieties -and clones. Diversifying varieties that are currently in commercial production by introducing and testing new clones will broaden the scope of those varieties and provide added complexity to the wines. New varieties will expand the...
Resource Type:: Technical Report

Evaluation of Pinot noir Maturity and Fruit Composition During the 1995 Vintage

Creator:: Watson, Barney, Chen, Hsio Ping, Candolfi-Vasconcelos, M. Carmo, and Castagnoli, Steve
Abstract:: During the 1995 harvest season Pinot noir development during ripening was monitored at Woodhall Vineyards (WHV) in Alpine and at three commercial vineyard sites at Croft (CR) Vineyards in Monmouth, Rex Hill Kings Ridge Vineyard (RHKR) in Newberg, and Erath Vineyards (ER) in Dundee. Cluster samples (25) were taken weekly...
Resource Type:: Technical Report

Evaluation of Pinot noir and Chardonnay Clones, 1993 Season

Creator:: Price, Steve and Watson, Barney
Abstract:: We harvested the first significant crop from the Woodhall clonal trials in 1993. Early results from clonal trials can be misleading but there are differences between clones that are already quite apparent in some cases. Many of the clone types could be readily identified this season by plant growth habit...
Resource Type:: Technical Report

Evaluation of Nitrogen Deficiencies in Oregon Grapevines, Musts, and Wines [1997-1998]

Creator:: Watson, Barney, Specht, Anna, and Hellman, Ed
Abstract:: Over the last several years 'stuck' and 'sluggish' fermenations have become a ma or concern of winemakers in Oregon as well as in Washington and California. During the 1996 vintage we began a preliminary survey of Oregon musts and juices at harvest and showed that many were low or marginal...
Resource Type:: Technical Report

Chardonnay Clonal Trial

Creator:: Price, Steve and Watson, Barney
Abstract:: The Chardonnay clonal trial was harvested on September 29th this year at the end of a week of unusually hot and dry weather. Most of the vines had been pruned to 20 nodes per vine but crop load was light due to small clusters. Yields ranged from less than 0.5...
Resource Type:: Technical Report

A Survey of Oregon Pinot noir Grape and Wine Phenolic Composition

Creator:: Price, Steven F., Valladao, Marilin, and Watson, Barney
Abstract:: Thirty five vineyard blocks of Pinot noir were sampled at harvest by taking a two hundred cluster sample in 1993. Commercial wines from these blocks were analyzed by HPLC at two and nine months of age. Cluster weights ranged from 72 to 148 g, berry weights from 0.55 to 0.90...
Resource Type:: Technical Report

ScholarsArchive@OSU

Yield Adjustment Research [1994-1995]

Yield Adjustment

Varieties, Clones, and Rootstocks

Sun Exposure and Grape Phenolics

Pinot noir Processing Effects on Wine Color and Phenolics [1994-1995]

Pinot noir Processing Effects on Wine Color and Phenolics [1992-1993]

Pinot noir Maturity and Harvest Information

Pinot noir Fermentation Processing Effects on Wine Color and Phenolics

Pinot noir Clonal Trial

Phenolic Compounds in Grapes and Wine

Personnel Support for Enology Research and Extension

Performance of Pinot Noir and Chardonnay Clones

Minimal Pruning

Lewis Brown Trellis Trial [1992-1993]

Evaluation of Winegrape Varieties, Clones, and Rootstocks : 1990-1991

Evaluation of Pinot noir Maturity and Fruit Composition During the 1995 Vintage

Evaluation of Pinot noir and Chardonnay Clones, 1993 Season

Evaluation of Nitrogen Deficiencies in Oregon Grapevines, Musts, and Wines [1997-1998]

Chardonnay Clonal Trial

A Survey of Oregon Pinot noir Grape and Wine Phenolic Composition

Limit your search

Academic Affiliation

Creator

Contributor

Date

Decade

Language

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Search Constraints

Search Results

Limit your search