" "
Satellite Banner
Technology
Networks
Scientific Communities
 
Become a Member | Sign in
Home>News>This Article
  News
Return

Grapevine Virus Screening Saves Napa-Sonoma $60M

Published: Tuesday, November 19, 2013
Last Updated: Tuesday, November 19, 2013
Bookmark and Share
Providing disease-free grapevines and rootstock to California’s famed North Coast wine region is money-wise to the tune of more than $60 million annually.

To quantify this benefit, the researchers developed an economic framework to conduct a case study of grapevine leafroll-3, the dominant grapevine virus in California and worldwide. They report their findings in a working paper released by the Center for Wine Economics at UC Davis’ Robert Mondavi Institute for Wine and Food Science. The complete paper is available online.

“This analysis places a dollar value on the efforts to prevent the spread of just a single disease in a single grape-growing region,” said Kate Binzen Fuller, the study’s lead author and a postdoctoral scholar in the Department of Agricultural and Resource Economics and Foundation Plant Services at UC Davis. “The overall benefits of such testing and certification are, in fact, dramatically higher,” she said.

Fuller added that the study revealed that the monetary benefits of such screening efforts far outweigh the costs related to screening and vine replacement.

“Even if growers have to pay a premium for certified, virus-free vines, this study suggests that they will receive a very large benefit. For the scenarios we evaluated, benefits are between six and 10 times the cost,” she said.

Viral threat to grapevines

Viruses and related disease-causing microbes pose a serious threat to agriculture because there are no effective controls available to growers, other than destroying infected plants. In the case of grapevines, viruses typically spread over long distances through the movement of infected plants or the use of infected cuttings and rootstock for propagating new plants.

Grapevine leafroll-3 appears in multiple strains, most causing leaves to redden and roll under along the edges. The disease diminishes fruit production and quality as grapes develop less pigmentation and sugar and mature more slowly. Growers have reported drops in yield of 30 percent and more; in some cases the disease even causes the plant graft to fail, killing the young vine.

The virus primarily is transmitted to the vine by mealybugs, tiny insects that are commonly found in California vineyards. Growers try to prevent grapevine leafroll-3 by testing their existing vines, using virus-free rootstocks and cuttings to grow new vines, removing diseased vines and spraying for mealybugs.

Screening plants for viruses

To prevent the introduction and spread of such viruses in grapevines, several clean-plant centers have been established throughout the United States, in partnership with the U.S. Department of Agriculture, to provide a large inventory of virus-screened plants to agricultural nurseries and growers.

In California, the Foundation Plant Services at UC Davis is responsible for screening and reproducing healthy, disease-free grapevines, as well as strawberries, fruit and nut trees, roses and sweet potatoes.

This meticulous process takes five to nine years and is costly, with expenses covered by revenue from plant sales to nurseries, several types of plant user fees, as well as custom contracts and virus testing.

Costs and benefits

The economic model created for this study by the UC Davis researchers compared the estimated value of losses incurred by North Coast winegrape growers due to grapevine leafroll disease with the estimated benefits realized by using vines that were certified to be virus-free. They did this by estimating what a grower’s net revenue would be in several different scenarios, based on initial disease appearance, disease spread, use of certified or noncertified vines, and replacement or nonreplacement of diseased vines.

“Results from applying this model indicate that, for the scenarios we examined, the most economically beneficial strategy is to plant initially with certified clean vines and to replace any vines that become diseased also with certified clean vines,” said study co-author Deborah Golino, a Cooperative Extension plant disease specialist and the director of Foundation Plant Services.

The researchers found that the average annual benefit to a grower from replacing diseased vines in a vineyard was 39 cents per vine or $512 per acre, if noncertified vines or rootstocks were used in both the initial and replacement plantings. The benefit for replanting diseased vines climbed to 55 cents per vine or $727 per acre if certified plant material was used to both plant and replant the vineyard.

Overall, the researchers estimate that, for just grapevine leafroll-3 virus, the vine certification program yields a benefit of between 30 cents and 47 cents per vine, or between $401 and $616 per acre. If all growers in the region were to use certified planting stock, this would translate to a benefit of between $40.4 and $61.8 million per year for the North Coast region. This benefit translates to between 4.8 percent and 7.4 percent of the wine grape revenue for that region.


Further Information

Join For Free

Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 2,900+ scientific posters on ePosters
  • More Than 4,200+ scientific videos on LabTube
  • 35 community eNewsletters


Sign In



Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into TechnologyNetworks.com you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.

Related Content

Cat Stem Cell Therapy Gives Humans Hope
By the time Bob the cat came to the UC Davis veterinary hospital, he had used up most of his nine lives.
Monday, February 08, 2016
Crowdfunding the Fight Against Cancer
From budding social causes to groundbreaking businesses to the next big band, crowdfunding has helped connect countless worthy projects with like-minded people willing to support their efforts, even in small ways. But could crowdfunding help fight cancer?
Monday, February 08, 2016
Toxic Pollutants Found in Fish Across the World's Oceans
Scripps researchers' analysis shows highly variable pollutant concentrations in fish meat.
Friday, January 29, 2016
Key Enzyme in Pierce’s Disease Grapevine Damage Uncovered
UC Davis plant scientists have identified an enzyme that appears to play a key role in the insect-transmitted bacterial infection of grapevines with Pierce’s disease, which annually costs California’s grape and wine industries more than $100 million.
Wednesday, January 13, 2016
Science Magazine Names CRISPR ‘Breakthrough of the Year’
In its year-end issue, the journal Science chose the CRISPR genome-editing technology invented at UC Berkeley 2015’s Breakthrough of the Year.
Monday, December 21, 2015
Genome Sequencing May Save California's Legendary Sugar Pine
The genome of California’s legendary sugar pine, which naturalist John Muir declared to be “king of the conifers” more than a century ago, has been sequenced by a research team led by UC Davis scientists.
Thursday, December 17, 2015
Cellular “ORACLs” to Aid Drug Discovery
New approach for finding therapeutics is inspired by face-recognition software.
Wednesday, December 16, 2015
New Virus Disovered, Linked To Hepatitis C
Study is first to reveal entire genetic makeup of human pegivirus 2.
Tuesday, December 15, 2015
CRISPR-Cas9 Helps Uncover Genetics of Exotic Organisms
A new study illustrates the ease with which CRISPR-Cas9 can knock out genes in exotic animals to learn how those genes control growth and development.
Friday, December 11, 2015
UC Davis Cracks the Walnut Genome
Scientists at the University of California, Davis, have for the first time sequenced the genome of a commercial walnut variety.
Friday, December 11, 2015
‘Purity’ Of Tumor Samples May Significantly Bias Genomic Analyses
Non-cancerous tumor components influence research findings, clinical classifications, study shows.
Monday, December 07, 2015
New Method for Screening Cancer Cells
Parallel microfiltration could lead to better treatments for a number of diseases, UCLA-led study says.
Thursday, December 03, 2015
Embryonic Switch for Cancer Stem Cell Generation
An international team of scientists report that decreases in a specific group of proteins trigger changes in the cancer microenvironment that accelerate growth and development of therapy-resistant cancer stem cells (CSCs).
Wednesday, December 02, 2015
New Organic Plant Breeding Effort Launched
A new effort to provide California growers with seeds for tomato, bean, pepper and other crop varieties that are specially bred for organic farming has been launched at UC Davis.
Tuesday, December 01, 2015
When it Comes to Breast Cancer, Common Pigeon is No Bird Brain
If pigeons went to medical school and specialized in pathology or radiology, they’d be pretty good at distinguishing digitized microscope slides and mammograms of normal vs. cancerous breast tissue, a new study has found.
Monday, November 30, 2015
Scientific News
Microdroplet Reactors Mimic Living Systems
Researchers use microdroplets to study non-equilibrium reactions like those in living organisms.
NIH Researchers Identify Striking Genomic Signature for Cancer
Institute has identified striking signature shared by five types of cancer.
CRI Develops Innovative Approach for Identifying Lung Cancer
Institute has developed innovative approach for identifying processes that fuel tumor growth in lung cancer patients.
Envigo Rat Models Proven to be Susceptible to Intra-Vaginal HSV-2 Infection and Protectable
Scientific findings establish the effectiveness of new approach to investigate the protective effects of vaccine candidates and anti-viral microbodies and to study asymptomatic primary genital HSV-2 infection.
What do Banana Peels and Human Skin Have in Common?
Human skin and banana peels have something in common: they produce the same enzyme when attacked. By studying fruit, researchers have come up with an accurate method for diagnosing the stages of this form of skin cancer.
The Spice of Life
Scientists discover important genetic source of human diversity.
Cytoskeleton Crew
Findings confirm sugar's role in helping cancers survive by changing cellular architecture.
The Power of Three
Overlooked portion of cell “death receptor” critical in some cancers, autoimmune diseases.
Drug that Activates Innate Immune System Identified
Researchers from the institute have identified a drug, which is straightforward to synthesize and to couple to antigens that induce an immune response and may prove useful in the generation of vaccines.
Removing Race from Human Genetic Research
A group of scientists are urging their colleagues to take a step forward and stop using racial categories when researching and studying human genetics.
Scroll Up
Scroll Down
Skyscraper Banner

Skyscraper Banner
Go to LabTube
Go to eposters
 
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
2,900+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
4,200+ scientific videos
Close
Premium CrownJOIN TECHNOLOGY NETWORKS PREMIUM FOR FREE!