A resurgence in the tree infection known as little cherry disease has raised concerns in area orchards, but Oregon State University Extension horticulturalist Ashley Thompson thinks it won’t impact cherry harvest yields in the Mid-Columbia the way it has in other locations.  Thompson says orchardists have been staying out in front of the disease, unlike some areas farther north in Washington that have had to remove acres of trees, while in the Mid-Columbia that hasn’t been the case.  She did say there will be orchardists removing trees and re-planting over the next year or two.  She added if growers don’t remove infected trees, the disease can spread very quickly.  Thompson says OSU has been producing waterproof cards with little cherry disease symptoms on them to distribute to pickers throughout the region so they can identify diseased trees.