Nutrient uptake and use of image analysis to detect nutrient deficiencies in maize subjected to the omission of NPK and Mn - Romualdo, Liliane Maria; Luz, Pedro Henrique de Cerqueira; Silva, Fernanda de Fátima da; Marin, Mário Antonio; Bruno, Odemir Martinez; Marques, Mariana Florêncio; Peres, Celso Eduardo Bonafe; Herling, Valdo Rodrigues (World Congress of Soil Science, 2014)