Alves, A. C.; Brauner, J. L.; Zonta, E. P.; Cordeiro, D. S.; Corrêa, L. A. V. Diagnosis of Foliar Potassium in Saccharine Sorghum: Identification of the Best Plant Organs and Growth Stage for Sampling. PAB 2014, 21 (7), 685-690. https://doi.org/10.1590/S1678-3921.pab1986.v21.14867.