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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Optimal Management of Lepidopteran Pests of Grapes
The primary objectives of this research project are: 1) To evaluate…
Meristem tip culturing for the elimination of grapevine viruses
The most important technical problem which limits the importation…
Involvement of Viroids in Grapevine Diseases and the Impact on Vine Performance
The role of viroids as agents of plant disease is well established.…
Interactions between Commercial Wine Yeast and Malolactic Bacteria
Commercial yeast and lactic acid bacteria (LAB) starter cultures…
Influence of Windbreaks on the Vegetative and Reproductive Growth
A study was initiated in spring of 1991 to determine the effects…
Influence of Trellis-Training System and Rootstocks
The first year's data from four-year-old Cabernet Sauvignon vines…
Influence of rootstock and vine spacing on root distribution, vine growth, crop
The effects of seven rootstocks (AxR#l, 110R, 039-16, 5C, 3309,…
Improvements and Replacements for Pre-Plant Soil Fumigation
High-pressure steam, hot air, hot water, and two years of solarization…
Field Evaluation of Winegrape Rootstocks
Data on rootstock performance is presented for 13 trials, ranging…
Factors Affecting Sugar Utilization and Rate of Fermentation
Many environmental and physiological factors influence fermentation…
Factors affecting bitterness, astringency and mouthfeel in wine
Astringency and sweetness were rated using time-intensity methods(T-I)…
Evaluation of Winegrape Clones
Three clonal trials were reported on: Zinfandel/Primitivo/Sangiovese,…
Evaluation of Root System Conversion Methods in the Lodi-Woodbridge District
Root system conversion methods were evaluated in three vineyards…
Evaluation of Microsprayers for Frost Protection in California Vineyards
Reduction in water use or increased water use efficiency are…
Effect of Rootstocks on grapevine mineral nutrition in the Central Coast Region
This study is comparing the differences in vine mineral nutrient…
Development of Methodologies for Rapid Detection of Grapevine Viruses
1994 Final Report – A low tittered antiserum to grapevine leafroll…
Cultural Control of Phylloxera in Existing Vineyards by Root System Conversion
Root system conversion methods were evaluated at the White Hills…
Clonal Testing of Winegrapes in the San Joaquin Valley
A San Joaquin Valley wine cultivar clonal evaluation study was…
Chemical Changes of Some Important Sulfur-Containing Compounds During Crushing, Fermentation and Storage.
We used glutathione reaction product (GRP) and glutathione (GSH)…
Breeding grapevine rootstocks for resistance to soil-borne pests and diseases
Progress in rootstock breeding was made in a variety of areas…
Alternatives to Bentonite
Bentonite is the most effective, reliable treatment to achieve…
A Cover Crop System for Vineyard Pest, Weed & Nutrition Management
This report describes the 1993 results of continuing, large replicated…
A broad Nematode Screen to Evaluate Four Potential Nematode Resistant Rootstocks
In 1993 we were unable to secure as many plants of 10-17A, 10-23B…
Winemaking Without Sulfur Dioxide
In previous years, we examined the effect of carbon monoxide…
Wine Grape Canopy Management Practices in the San Joaquin Valley
Recent wine grape vine training and trellising studies in the…
Water Requirements During and After Vineyard Establishment for Chardonnay Grapevines Grown in The Carneros District
A study is being conducted to determine the water use or vineyard…
Water Conservation in Wine Grape Production
An infrared thermometer (IRT) was used to schedule irrigation…
Volatile Sulfur Compounds: Incidence and factors affecting their formation in Californian Wines
The formation of volatile sulfur compounds during fermentation…
The Regulation of Fruit Growth, Fruit Composition, and Wine Composition by Water Management
This project quantified the role of cluster microclimate in water…
The Effect of Grapevine Latent Viruses on Alternative Rootstocks
1993 Final Report – An epidemic of latent virus disease is…
The Effect of Application and Timing of Kryocide on Fluoride Levels in Wines
The main purpose of this experiment was to investigate the relationship…
Spread and Control of Grape Phylloxera Biotype B
Objective 1: Variability in resistance of rootstocks to phylloxera…
Spiders in Vineyard Agro-Ecosystems
The overall goal of this research project is to continue to elucidate…
Reducing Bitterness In Wines. The effect of wine composition, sample evaluation method and salivary flow on sourness, bitterness and astringency
The effect of method of sample evaluation on sourness, bitterness…
Production of Antisera to Grapevine Viruses
A good supply of antisera to two isolates (type II and type III)…
Optimal Management of Lepidopteran Pests of Grapes
The primary objectives of this research project are: 1) To evaluate…
