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

NCPN Newsletters

NCPN People    Winter 2017 Edition

NCPN Grape News

  • 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...

NCPN Roses News

  • NCPN Network News Winter 2017 Roses

    Jacques Ferare of Star Roses & Plants, has been an enthusiastic supporter of the Clean Rose Collection maintained by the Foundation Plant Services.

    Next time you are at an NCPN meeting and hear a friendly voice in a lilting French accent, it likely belongs to Jacques Ferare, an industry representative to the NCPN-Roses Tier 2 Committee.  He is Vice President for Licensing and Rose Program Director at Star Roses and Plants in West Grove, Pa. A native of Nice, France, Jacques graduated from Colorado State University with a M.S. in...

NCPN Berries News

  • NCPN Network News Winter 2017 Berries

    Bob Martin is the USDA-ARS Research Leader and Research Plant Pathologist at the Horticultural Crops Research Unit in Corvallis Oregon. He serves as a representative on the National Clean Plant Network-Berries Tier 2.

    Bob Martin's interests are as diverse as the berry crops of which he is so passionate. Perhaps this is the result of growing up with 10 siblings and adapting to the wide variety of personalities and priorities on the family dairy farm in Wisconsin. Hard work and a can-do attitude shaped Bob's world view and the result is an ever-present smile and optimism that influences both his personal and professional life. Armed with a B.S. in Forestry and Ph.D. in Plant Pathology from the University of...

NCPN Citrus News

  • News from NCPN Citrus

    Huanglongbing On a global scale, one of the most important issues within citrus is the disease known as Huanglongbing (HLB), caused by several species of bacteria (Candidatus Liberibacter spp.) and vectored by phyllids, primarily the Asian citrus...

NCPN Fruit Tree News

  • NCPN Network News Winter 2017 Fruit Trees

    Dr. Scott Harper, the new director at Washington State University's Clean Plant Center Northwest, is featured in the WSU News.

    By Seth Truscott, College of Agricultural, Human & Natural Resource Sciences, WSU News Prosser, Wash, - As new director of the Clean Plant Center Northwest, Scott Harper will help growers stop devastating crop viruses before they gain a foothold. His top priority is to grow the Northwest's supply of virus-free fruit trees, vines and hops.  "The front line of the battle against...

NCPN Hops News

  • NCPN Network News Winter 2017 HOPS

    Brian Tennis, Vice Chair for the NCPN-Hops Tier 2 Committee, is a pioneer in Michigan's re-emerging hop growing industry. Tennis and partners in the Michigan Hop Alliance are focused on supplying the craft brewing industry with small acreage, high-demand cultivars.

    "We are an organic farming enterprise, committed to sustainable agricultural practices. Starting with virus-tested hop plants is a key strategy for establishing the healthiest, most robust acreage possible." --Brian Tennis Michigan Hop Alliance   Today, though Washington, Oregon, and Idaho still produce 90 percent of the nation's crop, Michigan's efforts are now back on the map,...

NCPN Sweet Potato News

  • NCPN Network News Winter 2017 Sweetpotatoes

    Dr. Chris Clark and Emily RIngeman are part of the expert team that manages the Sweetpotato Clean Plant Center at Louisiana State University AgCenter. Over 60 years of collective experience are represented by the team members who collaborate across two locations: the Sweetpotato Research Station in Chase, and the Plant Pathology & Crop Physiology program in Baton Rouge.

    You'd think something named “sweetpotato” would be a bit more attractive, but the tuber's lack of visual appeal can be forgiven once it hits the palate. Sweetpotatoes are an excellent source of beta-carotene, vitamin A, antioxidants and anti-inflammatory nutrients. But let's be honest—the sweetpotato's real charm is its versatility in providing a vessel for melted butter,...

 NCPN Newsletters as pdf: 

Welcome edition, August, 2016

NCPN People, Winter, 2017 


NCPN LogoThe National Clean Plant Network (NCPN) is a voluntary association of specialty crop networks that have joined to promote the use of pathogen-tested, healthy plant material for food crops in the United States. 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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