This publication is intended to help resource management professionals and landowners understand and manage sudden oak death (SOD) in California forests. The publication is divided into three parts.
Part 1 discusses the epidemiology of SOD in California. This includes information on biology of the pathogen Phytophthora ramorum, host-pathogen interactions, disease spread, and environmental conditions that affect disease. An understanding of these relationships is needed to choose the most appropriate strategies for managing SOD at a given location.
Part 2 describes how to develop a plan to manage SOD within a stand. We discuss how you can identify and prioritize areas that may be suitable for SOD management activities. Options for managing SOD are presented by stage in the disease epidemic:
Depending on the size of the landscape, you may need to manage different stages of the epidemic in different parts of your forest.
Part 3 provides detailed descriptions of the management techniques that are discussed in Part 2.
Our goal in developing this publication was to synthesize what is currently known about SOD into a framework to inform disease management. Readers that are interested in a detailed review of the published research on SOD may consult the excellent literature summary compiled by John T. Kliejunas, USFS (Kliejunas 2010), which is available online at http://www.fs.fed.us/psw/publications/documents/psw_gtr234/. In addition, the California Oak Mortality Task Force (http://www.suddenoakdeath.org) website contains a comprehensive catalogue of SOD related publications and information.