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 and Effects of Deficit Irrigation on Chardonnay Grapevines Grown in the
A study was conducted to determine the water use or vineyard…
Water Use of Wine Grapes in the Temecula Grape Region of California – Validation
The first of a four year study to determine vine water use and…
Xiphinema index and Grape Fanleaf Virus Disease Complex: Defining Nematode
We have initiated experiments using large soil containers (4'…
A Search for More Durable Resistance
During 1996 soil samples were collected and analyzed from existing…
A Study of Anagrus Egg Parasitoids Important for Biological Control of Erythroneura Leafhopper Pests of Wine Grapes in California
In many of California wine grape vineyards, especially in San…
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 and Evaluation of a Polymerase Chain Reaction (PCR) Assay for Detecting Xylella Fastidiosa in Plants
This was the second and final year of a project whose goal was…
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 Mechanical Thinning to Improve Composition of Wines from Minimally Pruned and Machine Pruned Vineyards
The effect of different levels of mechanical thinning on growth,…
Evaluation of Merlot and Malbec Clones
Five Merlot clones were compared for a second year. In 1996,…
Evaluation of Trellis/Training Systems and Subsurface Drip Irrigation for Wine Grape Production in California
This study is being conducted in a 15 acre Sauvignon blanc vineyard…
Factors Affecting Sugar Utilization and Rate of Fermentation During Vinification
In this grant year we have: 1) successfully developed the technology…
Field Evaluation of Winegrape Rootstocks
Data from 1996 continue the trends of previous years. Considerable…
Identifying Varieties and Clones by DNA Typing
DNA marker development is complete. Nineteen markers that were…
Improved Tissue Analysis Methods for Nitrogen Assessment of Wine
The limitations of petiole nitrate-N as a criteria for vine N…
Influence of Canopy Density on the Performance of Vertically Shoot Positioned Grapevines in the Central Coast
The purpose of this study is to examine the effects of leaf area…
Influence of Vine Trellis/Training System on Growth, Yield, Fruit
The experiment being conducted is a long term investigation of…
Management of Riparian Woodlands for Control of Pierce’s Disease in Coastal California
This continuing project seeks to evaluate a new way to reduce…
Modification of Wine Characteristics Through Irrigation Management
We propose to develop an approach to vine water management appropriate…
New Fining Techniques Utilizing Adsorbent Resins
To date we have evaluated the qualitative abilities of three…
New Parameters to Measure Ripeness
Grape samples were collected at two Oakville area vineyards during…
Optimal Viticulture Systems Comparison
The dual experimental constraints of only two years of data collection…
Pierce’s Disease Epidemiology and Management
This is the final year of a continuing project on the fate of…
Rapid Analytical Methods For Measurement of Cork-Taint in Wine
Work has been initiated to synthesize novel compounds similar…
