Entomologists in Michigan are still trying to determine whether spotted wing drosophila will be a significant tart cherry pest. “We were hoping it would not be an issue,” Dr. Nikki Rothwell said. She is the coordinator of the Northwest Michigan Horticultural Research Center north of Traverse City, right in the heart of the nation’s largest tart cherry production area. When SWD was first found in Michigan, it appeared that early harvested fruit, such as tart cherries, would be off the trees by the time SWD became active in orchards. But, Rothwell said, the arrival time of SWD in orchards each […]