Two cow/calf rotational grazing systems were demonstrated annually from 1991 to 2003 on CRP land near Corning, Iowa. These systems were a 13-paddock intensive rotational grazing system and a 4-paddock rotational grazing system. In 2004, these systems were combined into one system to demonstrate weaning of calves on grass. This report highlights the 2004 production data for this grazing demonstration.