Identifying corn (Zea mays L.) nutritional status by artificial vision system - Silva, Fernanda de Fátima da; Luz, Pedro Henrique de Cerqueira; Romualdo, Liliane Maria; Herling, Valdo Rodrigues; Marin, Mário Antonio; Bruno, Odemir Martinez; Zúñiga, Alvaro Gómez (ASA-CSSA-SSSA International Annual Meetings, 2011)