Sampaio, Everardo Valadares de Sa Barretto, and Ignacio Hernan Salcedo. “Nutrient Cycling in Sugarcane. V. Potassium Balance During Four Cropping Periods”. Pesquisa Agropecuaria Brasileira 26, no. 9 (September 1, 1991): 1323–1335. Accessed January 30, 2026. https://apct.sede.embrapa.br/pab/article/view/3472.