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Overview of Plant Disease Diagnoses for 2013

We receive only a handful of samples from Douglas county in most years. In 2013 we received 24, and 15 of those were from growers of wine grape. An infestation of the insect Phylloxera was diagnosed. However, the majority of the samples were concerned with fungal diseases associated with poor vigor, dieback, stunting and canker, including Eutypa dieback and Young Vine Decline.  See also a recent presentation about Grapevine trunk diseases.