Thousand Cankers Disease Monitoring Project 2022
Walnut Twig Beetle | Whitney Cranshaw, Colorado State University, bugwood.org Background: Thousand Cankers Disease (TCD) is an insect/disease complex caused by the combination of the lethal fungus, Geosmithia morbida, and the walnut twig beetle, Pityophthorus juglandis. This disease is native to the southwestern United States, but in the last decade, TCD has been discovered in many eastern states as well. It has been discovered in several of Kentucky’s neighboring states, however it hasn’t been detected in the Commonwealth to date. Black Walnut is highly susceptible to this disease which causes major dieback and mortality in these trees. Walnut Twig Beetle…
