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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Water Use of Wine Grapes In the Temecula Grape Region of California

The second of a four-year study to determine vine water use and…

A Search for More Durable Resistance

In this second year our experiments to meet each of our objectives…

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

Premium red wine production is dependent upon proper extraction…

Aetiology, Epidemiology and Control of Measles

Nine vineyards in California, including four table and five wine…

Alternative Wine Grape Cultivars for the San Joaquin Valley

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

Alternatives to Bentonite

MALDI-TOF mass spectrometry has been shown to be an excellent…

Characterization of Grapevine Latent Viruses

This is ongoing research, which has already yielded important…

Clonal Testing of Wine Grapes in the San Joaquin Valley

The San Joaquin Valley wine cultivar clonal evaluation study…

Development of Methodologies for Rapid Detection of Grapevine Viruses

We have produced enough purified preparations of grapevine leafroll…

Development of New Rootstocks for use in Napa Valley Fanleaf Sites

Major Objectives Develop screen for X index resistance. …

Dormancy Management Practices for Central Coast Wine Grape Vineyards

Erratic budbreak due to insufficient winter chilling has been…

Effects of Cold Temperatures on Pierce's disease

We are investigating the response of Pierce's diseased grapevines…

Evaluation of Mechanical Thinning to Improve Composition of Wines from

The effect of different levels of mechanical thinning on growth,…

Evaluation of Merlot and Malbec Clones

Data collected in 1997 in Merlot showed similarities to previous…

Field Evaluation of Winegrape Rootstocks

Data from 1997 continue the trends of previous years. Considerable…

Identifying Varieties and Clones by DNA Typing

In 1997 we conceived and founded the Vitis Micro satellite Consortium,…

Improved Tissue Analysis Methods for Nitrogen Assessment of Wine Grape

The limitations of petiole nitrate-N as a criteria for vine N…

Influence of Rootstock on Seasonal Foliar Levels of N and K

Petioles and blades were collected from 4 vineyards at 3 phenological…

Measurement of Volatile Aldehydes in Grapes, Wines, and Musts

Volatile, saturated aldehydes (C1-C9) in wine or aqueous ethanol…

Methyl Bromide Alternatives and Improvements

This report culminates a 5-year multi-commodity study to find…