Calcium deficiency diagnosis in maize leaves using imaging methods based on texture analysis - Devechio, Fernanda de Fátima da Silva; Luz, Pedro Henrique de Cerqueira; Romualdo, Liliane Maria; Herling, Valdo Rodrigues; Marin, Mário Antonio; Bruno, Odemir Martinez; Zuñiga, Alvaro Gómes (Journal of Agricultural Science, 2022)