As planting season approaches, Syngenta is continuing efforts to ensure that farmers who plant Agrisure Duracade corn have a market for their crop while making sure the grain doesn’t make its way into unapproved markets.

U.S. growers who plant Dur­­acade corn hybrids must sign a "Syngenta Stewardship Ag­­reement" that requires them to feed the grain to livestock or poultry on the farm or to deliver it...