Washington State University



Preventing the Spread of Phytophthora ramorum via Water:
Research and Coordination Workshop & Best Management Practices Meeting

Location:   Allmendinger Conference Center
Washington State University
Research and Extension Center
2606 West Pioneer
Puyallup, WA 98371

Dates: June 28-30, 2011

Organized by: Gary Chastagner, Washington State University and Susan Frankel, USDA-Forest Service, Pacific Southwest Research Station

Sponsored by: Washington State University and the California Oak Mortality Task Force

Local Arrangements: Gary Chastagner, 253-445-4528, chastag@wsu.edu and Marianne Elliott, 253-445-4596, melliott@puyallup.wsu.edu

Preventing the spread of Phytophthora ramorum via water was the focus of a two and a half day workshop attended by over 50 regulators, researchers, and industry representatives from the Western and Southeastern U.S., and Washington DC.  The workshop’s mission was to coalesce research, management and regulations to develop effective, economical and environmentally acceptable ways of limiting P. ramorum spread via contaminated nursery run-off.  The group visited a Gig Harbor retail nursery site where P. ramorum had leaked out of the nursery and infected riparian salal plants to review treatments and mitigations. Formal talks covered the incidence and location of P. ramorum recovery from waterways, water baiting techniques, risks and impacts for WA, and treatments to reduce the risk of spreading inoculum in water.  Research and education/outreach needs identification, group exercises and discussion concentrated on nursery treatments and water management, monitoring, and notification of downstream users of contaminated water. 

Agenda and Presentations

Photo Gallery

Notes and summary of meeting

Additional materials and links

Contact information

Contact: Gary Chastagner, 253-445-4528 | WSU Puyallup Research & Extension Center,2606 West Pioneer, Puyallup, WA, 98371-4998 USA