Junior, Roberto dos Anjos Reis. “Probability of Sugarcane Response to Potassium Fertilizer As a Function of Soil K+ (Ca2++Mg2+)-0,5 Ratio”. Pesquisa Agropecuaria Brasileira 36, no. 9 (September 1, 2001): 1175–1183. Accessed November 13, 2025. https://apct.sede.embrapa.br/pab/article/view/6241.