Offered through the OSU extended campus in partnership with the Oregon Department of Agriculture, this online course is divided into three modules:
Biology, symptoms, and diagnosis; disease management; and Phytophthora ramorum.
Phytophthora disease is the number one disease of nursery crops nationwide. Notorious Phytophthora diseases include sudden oak death, ramorum blight and rhododendron root rot.
Go here for registration information.
Oregon State offers Phytophthora course
The free course helps growers reduce the risk of the disease in the nursery.