Wildland management of Phytophthora ramorum in northern California forests

Abstract

In early 2006 we implemented a series of comparative silvicultural treatments aimed at managing the spread of Phytophthora ramorum Werres, de Cock & Man in?t Veld by reducing inoculum densities in isolated infestations on one public and three private properties in southern Humboldt County. These treatments, which took place on over 56 forested ha, are the first attempts at large-scale, stand-level silvicultural management of P. ramorum in California. As part of first-year post treatment monitoring, we compare a number of issues related to operational effectiveness of the treatment installations, such as identifying areas for treatment, barriers to treatment, time frames, expense, equipment and vehicle sanitation, and public perception of treatments. These are issues to be considered by anyone attempting silvicultural treatment of this pathogen in the future.

Parent Publication

• Proceedings of the sudden oak death third science symposium

Citation

Valachovic, Yana; Lee, Chris; Marshall, Jack; Scanlon, Hugh. 2008. Wildland management of Phytophthora ramorum in northern California forests. In: Frankel, Susan J.; Kliejunas, John T.; Palmieri, Katharine M., tech. coords. 2008. Proceedings of the sudden oak death third science symposium. Gen. Tech. Rep. PSW-GTR-214. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. pp. 305-312