Rainier cherries from trees on Gisela 5 and 6 rootstocks were significantly larger when grown under tunnels than when grown without tunnels. Preliminary data showed that 73 percent of the tunnel cherries were 9 row, compared with only 9 percent of the no- High-density sweet cherry trees grown in tunnels produce larger fruit than trees outside tunnels, preliminary data from Michigan State University trials suggest. The trials also showed that establishment costs for the tunnel system, which are significant, may be justified under cherry growing conditions in the Midwest because of the higher crop values that would be received for […]