Hannah Carter, dean of the University of Maine Cooperative Extension, will participate in a Maine Calling discussion about agriculture and COVID-19 at 1 p.m. Tuesday, June 30.  Amanda Beal, commissioner of the Department of Agriculture, Conservation and Forestry; and Sarah Alexander, executive director of the Maine Organic Farmers and Gardeners Association, also will be part read more Carter to take part in Maine Calling show about COVID-19, agriculture