National Clean Plant Network
National Clean Plant Network
National Clean Plant Network
University of California
National Clean Plant Network

NCPN Grape News

Five Facts About Grape Viruses and NCPN-Grapes

Wine quality is affected by a very common disease, leafroll disease, which reduces sugar content and color of grapes and increases acidity. Leafroll disease is caused by one or more viruses in the grapevine leafroll virus species. Archived leaf tissue in the UC Davis Herbarium from the 1940s was found to be infected with the newly discovered (2012) Grapevine red blotch virus indicating...

Posted on Saturday, January 6, 2018 at 12:58 PM

Grapes,NCPN Network News, Spring 2017

Rick Hamman

Rick Hamman, Viticulture Manager, Hogue Ranches, Prosser Washington “The National Clean Plant Network is a valuable resource for our wine industry of Washington and other areas of the PNW and the nation. Virus-clean grapevine material from the Clean Plant Center Northwest (CPCNW) has given the Washington wine industry a future and direction in battling the most significant disease...

Posted on Friday, June 16, 2017 at 11:12 AM

NCPN Network News Winter 2017 Grapes

Maher Al-Rwahnih enjoys showing off the 600 million reads he gets from the Next Seq 500 machine purchased with NCPN funds for use at Foundation Plant Services.

Dr. Maher Al-Rwahnih took over the reins as Diagnostic and Research Lab Director at Foundation Plant Services (FPS), UC Davis on July 1, 2016.  He also serves as vice chair of the NCPN-Fruit Tree Tier 2, is on NCPN-Roses Tier 2 and is actively involved in the NCPN-Sweetpotato virology committee.   Maher (pronounced Ma - her) originally hails from Jordan and spent time in Italy at the...

Posted on Monday, March 20, 2017 at 9:21 PM

NCPN Webinar Series: Clean Plants for the Future of the Eastern Wine and Grape Industry


The National Clean Plant Network for Grapes (NCPN-G) was established to improve the health and productivity of wine, juice, and table grape vineyards in the United States. Clean grapevines are the key to higher yields, higher quality fruit, and cost-effective, sustainable grape production. The five centers in the network represent grape growing regions across the country. In March 2016, a weekly...

Posted on Wednesday, May 18, 2016 at 11:23 AM

NCPN-Grapes Special Webinar on Grapevine Red Blotch, March 27, 2013

Click to view video. The National Clean Plant Network for Grapes is a body of industry members, experts in plant pathology, regulators and clean plant centers that were created to develop and provide healthy grapevine material to the grape industry in the United States. The headquarters of the NCPN Grapes is at Foundation Plant Services at the...

Posted on Wednesday, March 27, 2013 at 2:29 PM

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NCPN LogoThe National Clean Plant Network (NCPN) produces and distributes asexually propagated plant material free of targeted graft transmissible plant pathogens to ensure the global competitiveness of specialty crop producers and to protect the environment. The NCPN operates under the auspices of three agencies within the United States Department of Agriculture - Animal and Plant Health Inspection Service (APHIS), Agricultural Research Service (ARS) and National Institute of Food and Agriculture (NIFA).



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