Sudden oak death: USDA publishes comprehensive report

Phytophthora ramorum is a fungus that causes the disease known as Sudden Oak Death. Depending on the plant species, its infection may occur on the trunk, branches, and/or leaves of a tree. Infections on the woody portions of a tree are referred to as cankers. Cankers on the trunk of oak and tanoak trees are the most damaging and often lead to death. This fungus thrives in cool, wet climates. Photo: Joseph O'Brien, USDA Forest Service


USDA December 27, 2010, press release:

Synthesizing more than 10 years of cooperative research on the exotic invasive, quarantine sudden oak death pathogen, the USDA Forest Service’s Pacific Southwest Research Station (PSW) recently published “Sudden Oak Death and Phytophthora ramorum: A Summary of the Literature.” This 181-page comprehensive report covers a wide range of topics, including a history of sudden oak death, identification and distribution of the disease, epidemiology and modeling, management and control, and economic and environmental impacts.

The pathogen was new to science when identified in 2000.

Read more here.

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