OSU Logo

Overview of Plant Disease Diagnoses for 2013

Growers in Josephine county usually only submit a handful of a samples.  In 2013, we received 21, and of those more than half were from wine grape growers. Fungal diseases associated with stunting and poor vigor, including Eutypa dieback and Young Vine Decline. Leaf reddening and grapevine viruses was also a concern and we were able to diagnose red botch disease, a relatively recently discovered virus on grape, whose symptoms resemble those of the grapevine leafroll associated viruses. See also a recent presentation on Grapevine trunk diseases.