Twenty percent of the nation’s cranberry crop was enjoyed on Thanksgiving, and this year some cranberry farmers in Cape Cod have a new high-tech, water-saving growing system to be thankful for. Growing cranberries takes a lot of water. Farmers spray their cranberry bogs when temperatures dip because the water generates heat as it freezes, protecting the berries. The U.S. Department of Agriculture gave a conservation innovation grant to cranberry growers in Cape Cod so they could update their irrigation systems to include sensors that automatically detect when it’s time to turn on the water and when it’s time to turn it off instead of using old-fashioned manual watering. Switching to automated water delivery can save 280,000 gallons of water a season.