ARS | Publication request: Phytophthora Ramorum: a Guide for Washington Nurseries

Submitted to: Washington State Nursery and Landscape Asociation
Publication Type: Other
Publication Acceptance Date: October 15, 2004
Publication Date: November 1, 2004
Citation: Parke, J., Pscheidt, J., Linderman, R.G. 2004. Phytophthora ramorum: A guide for Washington nurseries. Washington State Nursery and Landscape Asociation Brochure.

Technical Abstract: Phytophthora ramorum, the cause of leaf spot, branch dieback, and tree mortality (Sudden Oak Death) has been detected in wholesale and retail nurseries in California, Oregon, Washington, and British Columbia. This brochure, published by the Washington State Nursery and Landscape Association (WSNLA), presents information that is needed to control this disease to growers in Washington nurseries. The guide includes discussions on the history of the discovery of the pathogen and its diseases, the known host plants, the biology of the pathogen, and methods of disease prevention including exclusion and avoidance, cultural management, protection and suppression with fungicides, and detection and eradication. It will be sent to the membership of the WSNLA, but will provide guidance to all nurseries threatened by this disease and pathogen.