Progress of the Phytophthora ramorum eradication programme in south-western Oregon forests, 2001 - 2009

Paul Reeser; Rick Schultz; Dan Hilburn; Alan Kanaskie; Everett Hansen; Ellen Michaels Goheen; Nancy Osterbauer; Michael McWilliams; Jon Laine; Michael Thompson; Stacy Savona; Harvey Timeaus; Bill Woosley; Wendy Sutton

Treesearch

Progress of the Phytophthora ramorum eradication programme in south-western Oregon forests, 2001 - 2009

Formally Refereed

Authors:

Paul Reeser, Rick Schultz, Dan Hilburn, Alan Kanaskie, Everett Hansen, Ellen Michaels Goheen, Nancy Osterbauer, Michael McWilliams, Jon Laine, Michael Thompson, Stacy Savona, Harvey Timeaus, Bill Woosley, Wendy Sutton

Year:

2011

Type:

Scientific Journal

Station:

Pacific Southwest Research Station

Source:

New Zealand Journal of Forestry Science. 41S: S169-S175. [published on-line: 24/11/2011]

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Download (PDF 4.08 MB): https://research.fs.usda.gov/download/treesearch/39952.pdf

Abstract

Sudden Oak Death (SOD) disease caused by Phytophthora ramorum Werres, de Cock & Man in't Veld was first discovered in Oregon forests in July 2001. Since then, an interagency team has been attempting to eradicate the pathogen though a programme of early detection (aerial and ground surveys, stream baiting) and destruction (herbicide treatment, felling and burning) of infected and nearby host plants, which has evolved over time. Post-treatment monitoring has indicated that although the disease has been eliminated from many of the sites and spread of inoculum may have been reduced, the disease continues to spread slowly. The quarantine area has expanded from 23 km² in 2001 to 420 km² in 2009. We attribute continued spread of the disease to the slow development of recognisable symptoms and to delays in treatment application associated with inconsistencies in funding.

Keywords

eradication, Notholithocarpus densiflorus, Sudden Oak Death, Oregon, Phytophthora ramorum, tanoak

Citation

Kanaskie, Alan; Hansen, Everett; Goheen, Ellen Michaels; Osterbauer, Nancy; McWilliams, Michael; Laine, Jon; Thompson, Michael; Savona, Stacy; Timeaus, Harvey; Woosley, Bill; Sutton, Wendy; Reeser, Paul; Schultz, Rick; Hilburn, Dan. 2011. Progress of the Phytophthora ramorum eradication programme in south-western Oregon forests, 2001 – 2009. New Zealand Journal of Forestry Science. 41S: S169-S175. [published on-line: 24/11/2011]