M. Andreotti, E. C. A. de Souza, C. A. C. Crusciol, J. D. Rodrigues, and L. T. Bull, “Dry matter yield and nutrient uptake in corn plants as a function of potassic fertilization and of basis soil saturation”, PAB, vol. 35, no. 12, pp. 2437–2446, Dec. 2000.