Oregon State University reports that zebra chip has been found in two potato plants from a single field east of Hermiston, Ore.
The discovery comes despite low trap counts of potato psyllid, which vectors the disease.
Scientists at the Hermiston Agricultural Research and Extension Center advise growers and fieldmen to look for foliar symptoms of the disease as they scout fields, and treat with insecticides if warranted.
SOURCE: Mitch Lies, Capital Press
http://www.capitalpress.com/newsletter/ml-zebra-chip-080112