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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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…

Capture and Utilization of Fermentation Emission

SUMMARY AND RESEARCH ACCOMPLISHMENTS: Preliminary results indicate…

Clonal Testing of Winegrapes in the San Joaquin Valley

Executive Summary: An on-going San Joaquin Valley wine cultivar…

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…

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…

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…

Interaction of commercial wine yeasts and malolacric bacteria

Twenty-nine strains of malolacric bacteria and forty-three strains…

Meristem tip culturing for the elimination grapevine viruses

Young grapevines have been successfully propagated from virus…

New technology for determining vine water status and controlling vineyard

We confirmed that ultrasonic acoustic emissions occur in field-grown…

Production of Antisera to Grapevine Viruses

A good supply of antisera to two isolates (type II and type III)…

Reducing Bitterness in Wines

As reported previously (Noble, final report, AVF 91), astringency…

Soil Pest Profile for Grape Rootstocks

At this time we can present a ranking of sixteen rootstocks and…

Spiders as Beneficials in Grape Agro-ecosystems

Spiders represent an entirely predacious group of organisms whose…

Spread and Control of Biotype B Phylloxera

Summary From the 1990-1991 Report: Known biotype B sites are…