Cranberries are a billion-dollar industry in Massachusetts and employ more than 6,900 people. But the market is getting crowded, and that’s pushing down the price. Wisconsin has been the top grower in North America for years. Quebec has only been growing cranberries for the last 20 years, but it surpassed Massachusetts in its cranberry harvest in 2014. Why hasn’t Massachusetts kept up with Wisconsin and Quebec? “It’s not so much that our production is down, it's that it's stable, and other areas are growing,” according to Carolyn DeMoranville, the director of the UMass Cranberry Station in Wareham. (WCAI 11/21/16)