Poster Abstract
  Management and Disposal

Lessons from Lateralis: Experiences with Managing Another Forest Phytophthora

Frank Betlejewski¹, Pete Angwin², and Don Goheen³

Phytophthora lateralis, the pathogen that causes Port-Orford-cedar (Chamaecyperis lawsoniana) root disease, has been present within the natural range of Port-Orford-cedar since the 1950s. Since then, a number of management strategies have been adopted to limit the spread of the disease. Designating the season of activity, scheduling of operations, road closures, and washing of equipment, vehicles and boots have all had some success in reducing the spread of P. lateralis. Some of these techniques may be useful in the management of Sudden Oak Death (Phytophthora ramorum).

The success of various management strategies for Port-Orford-cedar root disease has depended upon complexity, cost, public awareness, and public acceptance. We have learned that while there are many possible methods of management, proposed treatments must be both biologically effective and economically efficient. Monitoring of results is a critical component of disease management. It quantifies results for the scientists and demonstrates the value of applied management to the public.

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¹Port-Orford-Cedar Program Manager,USDA Forest Service, Central Point, OR
²Plant Pathologist, USDA Forest Service, Redding, CA
³Plant Pathologist, USDA Forest Service, Central Point, OR