Oregon orchardists Mitchell Huru of Hood River (left), Peter Winnick of Medford (center), and Bill Reeves of Mosier check a canker on a young Sweetheart tree on Gisela 6 rootstock in a trial at the Mid-Columbia Agricultural Research and Extension Center, Bacterial canker is the number-one killer of cherry trees in Washington and Oregon, but some varieties and rootstocks seem more affected than others. Dr. Robert Spotts, plant pathologist with Oregon State University in Hood River, began an experiment last spring to determine which cherry varieties are most vulnerable to the disease, and what rootstock might provide resistance. In a […]