Alves, Antonio Carlos, Jorge Luis Brauner, Daltro Silva Cordeiro, Élio Paulo Zonta, and Luís Antonio Veríssimo Correa. 2014. “Potassium, Calcium and Magnesium Nutritional Requirements of Sweet Sorghum”. Pesquisa Agropecuaria Brasileira 23 (5): 529-36. https://doi.org/10.1590/S1678-3921.pab1988.v23.13915.