Posts Tagged: Geosmithia morbida
Walnut Twig Beetle and Fungus Has Caused 'Profound Damage' to Black Walnut Trees
The deadly thousand cankers disease, an emerging insect-fungus complex, has caused profound damage...
Forest entomologists Steve Seybold and Jackson Audley, his doctoral student, stand at the base of a dying giant black walnut tree on the 100 block of E Street. (Photo by Kathy Keatley Garvey
"The walnut twig beetle is a significant pest of very large trees because it sequentially attacks the small branches--though ironically not the twigs--all the way down the trunk to the soil line,” says forest entomologist Steve Seybold. This image is of a dying black walnut tree in downtown Davis. (Photo by Kathy Keatley Garvey)
There isn't much foliage left on this black walnut tree in downtown Davis. Thousand cankers disease, caused by a walnut twig beetle in association with a canker-producing fungus, is killing this tree. (Photo by Kathy Keatley Garvey)
Jackson Audley: A Case Study with the Walnut Twig Beetle
So tiny and so destructive. It's about the size of a grain of rice but it's a killer. That's the...
The walnut twig beetle is about the size of a grain of rice. (Photo by Kathy Keatley Garvey)
A Thousand Questions about TCD
Researchers have a thousand questions about thousand cankers disease (TCD), the newly discovered...
Dying Walnut Trees in Davis
Walnut Twig Beetle
Bad News for Black Walnut Trees
The news is startling, but not totally unexpected.Thousand cankers disease, which infects and kills...
Walnut Twig Beetle