Scientists are making headway in the search for effective chemical thinning agents for cherries, though specific recommendations aren’t available yet. Chemical thinning research is complex and time consuming because trials are subject to the vagaries of weather, both before and after application, said Dr. Matthew Whiting, horticulturist at Washington State University’s research and extension center at Prosser. “But after four years into it, we can look back and start to select winners and losers,” he said. “Losers are easier to identify.” A fish oil-lime sulfur combination has been the most consistent material tested in the four years, Whiting noted. The […]