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    Author(s): Katie Coats; Gary Chastagner; Norm Dart; Meg M. Larsen; Niklaus J.. Grunwald
    Date: 2010
    Source: In: Frankel, Susan J.; Kliejunas, John T.; Palmieri, Katharine M. 2010. Proceedings of the Sudden Oak Death Fourth Science Symposium. Gen. Tech. Rep. PSW-GTR-229. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. pp. 114-115
    Publication Series: General Technical Report (GTR)
    PDF: View PDF  (14.95 KB)

    Description

    Phytophthora ramorum was first detected in a Washington nursery in 2003 and has since been positively identified in 46 nurseries, three non-nursery water sites, and three landscape sites. Thirteen nurseries have tested positive for 2 consecutive years and four nurseries have been positive for 3 consecutive years, despite the completion of the U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS) Confirmed Nursery Protocol (CNP), which is intended to eradicate this pathogen from positive nurseries. Trace-back inspections to wholesale nurseries have failed to confirm the origin of infested plant material at some nurseries and thus it is unclear if the pathogen is being reintroduced into these repeat nurseries each year or if it is persisting at the nurseries from one year to the next.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Coats, Katie; Chastagner, Gary; Dart, Norm; Larsen, Meg M.; Grunwald, Niklaus J.. 2010. An Update on Microsatellite Genotype Information of Phytophthora ramorum in Washington State Nurseries. In: Frankel, Susan J.; Kliejunas, John T.; Palmieri, Katharine M. 2010. Proceedings of the Sudden Oak Death Fourth Science Symposium. Gen. Tech. Rep. PSW-GTR-229. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. pp. 114-115

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