Title: Thousand Cankers Disease-Pest Alert, Revised February 2013
Author: Seybold, Steven; Haugen, Dennis; O'Brien, Joseph; Graves, Andrew
Publication: NA-PR-02-10, Revised February 2013. USDA Forest Service, Northeastern Area, State & Private Forestry
Abstract: Dieback and mortality of eastern black walnut (Juglans nigra) in several Western States have become more common and severe during the last decade. A tiny bark beetle is creating numerous galleries beneath the bark of affected branches and the main stem, resulting in fungal infection and canker formation. The large numbers of cankers associated with dead branches and the stem suggest the disease's name - thousand cankers disease.
Online Access: http://na.fs.fed.us/pubs/palerts/cankers_disease/thousand_cankers_disease_screen_res.pdf
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