Thousand Cankers Disease Survey Guidelines Now Available (May 2013)
USDA. Animal and Plant Health Inspection Service.
In cooperation with the U.S. Forest Service, APHIS Plant Protection and Quarantine has updated the Thousand Cankers Disease (TCD) Survey Guidelines for 2013 (Mar 2013; PDF | 4.5 MB). TCD results from the combined activity of Geosmithia morbida fungus and the walnut twig beetle (WTB, Pityophthorus juglandis).
* See our Thousand Cankers Disease page for more information and additional resources.Date:Jun 06, 2013