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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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…

Trellises for Wine Grape Canopy Management in the San Joaquin Valley

A wine grape trellis trial was designed and planted in 1986 at…

Investigation of pattern of utilization of nitrogen compounds and urea

A field experiment, fertilized at seven different nitrogen levels…

Vineyard canopy management practices for improving grapevine

The main conclusions from a four-year study of trellising, row…

Water Conservation in Wine Grape Production

An infrared thermometer (IRT) was used to schedule irrigation…

Winemaking Without Sulfur Dioxide

Spoilage organisms: Zygosaccharomvces and Kloeckera, whose presence…