Research Results

Click a title below to view a research summary or narrow your search by entering a specific search term or topic.  You can find research summaries keyword, funding year, primary investigator or category using the search boxes at right. Project summaries are available for every year since 1991.

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Modification of Wine Characteristics through Irrigation Management

This project seeks to develop an approach to vine water management…

New Parameters to Measure Ripeness

We have accomplished our primary goal of finding what phenolic…

Novel Optimization Methods for Wine Processing

We are developing an optimization method for wine processing…

Optimal Viticulture Systems Comparison

For the 1997 season, several changes in the specific objectives…

Optimizing Tissue Culture Techniques for Virus Elimination in Grapevines

Microshoot tip tissue culture is the method of choice to eliminate…

Other Ethyl Carbamate Precursors in Grape Juice and Wine

The study shows the results of duplicate experiments where the…

Rootstock Interaction with Cultural Practices

This report contains the results of three studies centered on…

Studies in the Biology and Control of Armillaria Root Disease on Grapes

Armillaria root disease (also known as oak root fungus) is a…

The Extraction of Condensed Tannins in Red Wine Production

A commercial scale maceration trial was set up with two wineries,…

A Search for More Durable Resistance

During 1996 soil samples were collected and analyzed from existing…

Adaptation of a Simple Assay to Measure Tannins in Grapes and Wines

We have accomplished the objectives proposed for the 1996 season.…

Aetiology, Epidemiology and Control of Measles

Isolations from symptomatic grapevines have consistently yielded…

Alternative Wine Grape Cultivars for the San Joaquin Valley

A San Joaquin Valley wine grape trail block was established in…

Alternatives and Improvements to Soil Fumigation with Methyl Bromide

Methyl bromide is the last preplant soil fumigant which, when…

Alternatives to Bentonite

In this grant year, we have nearly completed the analysis of…

Biology and Genetics of Rootstock Resistance to Grape Phylloxera

Biology and Genetics of Rootstock Resistance to Grape Phyllo…

Characterization of Flavor Properties, Chemistry, and Occurrence of

Short chain, volatile aldehydes contribute important sensory…

Characterization of Grapevine Latent Viruses

Work on this project is aimed at three primary objectives: 1)…

Chemical Changes of Some Important Sulfur-Containing Compounds

We added glutathione (300 mg/L) to a Chardonnay juice prior to…

Clonal Testing of Wine Grapes in the San Joaquin Valley

The San Joaquin Valley wine cultivar clonal evaluation study…

Compositional Factors Affecting Sulfide Formation During Wine

Sixteen samples of grapes from commercial vineyards were fermented…

Control of Eutypa Dieback of Grapes

Several objectives were investigated in 1996-97, the primary…

Development of Methodologies for Rapid Detection of Grapevine Viruses

Antisera produced to grapevine leafroll associated virus (GLRaV)…

Development of New Rootstocks for Use in Napa Valley Fanleaf Sites

The bench grafted plants of a number of Vitis rupestris x Muscadinia…

Evaluation of Merlot and Malbec Clones

Five Merlot clones were compared for a second year. In 1996,…

Field Evaluation of Winegrape Rootstocks

Data from 1996 continue the trends of previous years. Considerable…