NCPN-Fruit Tree Centers | Washington State University

NCPN-Fruit Tree Centers

American fruit tree growers produce over six million tons of high quality fruit for consumers each year. Participating programs in the National Clean Plant Network for Fruit Trees help control viruses and virus-like agents that can potentially impact the yield, appearance and taste of the fruit. Scientists and researchers working in these programs develop strategies to minimize the economic impact of viruses on the tree fruit and nursery industries.

The center in Prosser, WA serves as the headquarters for NCPN-FT and all centers collaborate to provide the products and services needed for specialized growing regions across the United States.

The Clean Plant Center Northwest at Washington State University – Prosser

  • Tests deciduous fruit trees for virus content and sensitivity.
  • Develops and adapts new technology protocols to improve virus detection, management and etiology.
  • Eliminates targeted viruses and virus-like agents through the expert application of thermal therapy treatment.
  • Produces and distributes deciduous fruit tree propagation material free of detectable virus and virus-like agents.
  • Maintains over 1500 virus-tested fruit tree clones under screenhouse conditions.

Southeastern Budwood Program at Clemson University

  • Maintains a small, developing foundation collection of stone fruit varieties in an insect-proof greenhouse and field block.
  • Ensures the supply of peach bud wood that is tested and clear of prunus necrotic ringspot, prune dwarf, and plum pox viruses for the southeaster peach industry.
  • Tests the primary block of Guardian trees for rootstock production for PNRSV, PDV and PPV annually.

Foundation Plant Services at University of California, Davis

  • Maintains a foundation orchard with over 300 cultivars of
    almond, apricot, cherry, nectarine, peach, plum and
  • Develops virus detection techniques; conducts virus testing
    and elimination.
  • Provides tree introduction services to qualify foreign and
    domestic selections for release from federal quarantine and/or
    inclusion in the California Department of Food
    and Agriculture’s Fruit and Nut Tree Registration and
    Certification Program.
  • Serves as a reliable source of dormant cuttings, green cuttings
    and rootstock seed for fruit and nut tree propagation.
  • Works to ensure a clean source of new materials
    from breeding programs.