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Overview of Plant Disease Diagnoses for 2012

Yamhill county usually submits up to 100 samples per year.  In 2012 grapevine growers had young vine decline complex of fungal diseases, and Grapevine leafroll associated virus-2. Greenhouse producers and nurseries of mostly woody ornamentals had various abiotic conditions associated with leaf discoloration and spotting, and fungal diseases including Phytophthora root rot, as well as fungal pathogens associated with stem and branch cankers.