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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Factors Affecting Sugar Utilization and Fermentation
The quantity as well as quality of available nitrogen during…
Evaluation of Winegrape Clones
Thirteen clones or selections of Pinot noir were harvested for…
Ethyl Carbamate Formation by Malolactic Bacteria
Arginine is one of the major amino acids found in grapes and…
Cultural Control of Phylloxera in Existing Root Systems
Root system conversion methods were evaluated in small research…
Control of Eutypa Dieback of Grapes
The ultimate objective of this research is to develop practical…
Clonal Testing of Winegrapes in the San Joaquin Valley
An on-going San Joaquin Valley wine cultivar clonal evaluation…
Breeding Grapevine Rootstocks for Resistance to Soil-Born Pests and Diseases
The development of new rootstocks is necessary to address viticulture's…
An Appraisal of Liquid Chromatography-Mass Spectrometry for the Analysis and Tracking of Wine and Grape Components-Extension
The consumption of wine may explain the unaccountably low rate…
Alternatives to Bentonite
Use of bentonite as a protein stabilizing agent for wine generates…
A Cover Crop System for Vineyard Pest, Weed and Nutrition Management
Large scale replicated trials were initiated in the fall of 1991…
A Broad Nematode Screen to Evaluate Four Potential Nematode Resistant Rootstocks
The USDA-Fresno was able to provide good quantities of each of…
Alternatives to Bentonite
There are many causes of hazes in wine and two predictive tests:…
Biotechnology for Grape Improvement
The goal of this research is to produce economically significant…
Breeding grapevine rootstocks for resistance to soil-borne pests and diseases
Objectives: Continue a rootstock breeding program initiated in…
Capture and Utilization of Fermentation Emission
SUMMARY AND RESEARCH ACCOMPLISHMENTS: Preliminary results indicate…
Investigation of the Chemical and Biological Changes Identified with Sur Lie Treatment of Wine
The following summary is taken from the Technical Abstracts for…
Clonal Testing of Winegrapes in the San Joaquin Valley
Executive Summary: An on-going San Joaquin Valley wine cultivar…
Control of Current and Emerging Problems of Microbiological Spoilage of Wine
Reports have been received from California winemakers in recent…
Control of Eutypa Dieback
Objectives: The overall objective of this research is to develop…
Cultural Control of Phomopsis Cane and Leaf Spot
The overall goal of this project is to evaluate the potential…
Cultural Control of Phylloxera in Existing Vineyards
Root system conversion methods were evaluated at the White Hills…
Epidemiology and Control of Grapevine Powdery Mildew in California
Powdery mildew can overwinter in cleistothecia lodged in bark.…
Evaluation of Winegrape Clones
Five clonal trials were harvested in 1991, two Chardonnay, two…
Field evaluation of rootstocks for resistance to phylloxera and nematodes
Nine rootstock trials were harvested in coastal. Central Valley…
Genetics of Fungicide Resistance to Bayleton, Rally, and Rubigan
Objective: To determine the genetics of fungicide resistance…
Grapevine fanleaf virus: detection and distribution
The first three objectives of this study are dependent upon the…
Grapevine Viroids as Possible Factors in Disease, Clonal Variation and Wine Quality
The general overview of this project is to provide an understanding…
Impact of Fungicide Use on Wine Quality
The purpose of this continuing research project was to investigate…
Improving nitrogen fertilizer efficiency in winegrapes
This was a four-year study on the effects of N fertilizer timing…
Influence of rootstock and vine spacing on root distribution, vine growth
Root profile mapping of Cabernet Sauvignon on AxR, 110R and St.…
Interaction of commercial wine yeasts and malolacric bacteria
Twenty-nine strains of malolacric bacteria and forty-three strains…
AN APPRAISAL OF LIQUID CHROMATOGRAPHY-MASS SPECTROMETRY FOR THE ANALYSIS AND TRACKING OF WINE AND GRAPE COMPONENTS
Objectives and Results: Our initial assessment was that this…
Meristem tip culturing for the elimination grapevine viruses
Young grapevines have been successfully propagated from virus…
Minimizing Fertilizer Inputs for Variegated Leafhopper Management in Grapes
This research investigated the relationship between host plant…
New technology for determining vine water status and controlling vineyard
We confirmed that ultrasonic acoustic emissions occur in field-grown…
Influence of nitrogen fertilization and other vineyard cultural practices on the
Sauvignon blanc and Chardonnay grapevines grown at the North…
