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Sustainable Tillage - Beech Grove Farm, Trout Run, PA - University of Vermont Extension 2007 - - University of Vermont Center for Sustainable Agriculture. http://uvm.edu/~susagctr/ Uploaded with permission. Noncommercial use only. Eric and Anne Nordell, Beech Grove Farm, Trout Run PA *Ridge Till and Cover Crops. Vegetable Farmers and their Sustainable Tillage Practices. A 45-minute educational video featuring 9 farms in 4 northeastern states. Produced by: Vern Grubinger, University of Vermont Extension. With funding from: Northeast Sustainable Agriculture Research and Education (SARE) Program, U.S.D.A.