Goedert, Wenceslau J., John K. Syers, and Robert B. Corey. “Potassium Quantity-Intensity Relationships of Soils from Rio Grande Do Sul”. Pesquisa Agropecuaria Brasileira 10, no. 11 (April 15, 2014): 31–35. Accessed July 6, 2026. https://apct.sede.embrapa.br/pab/article/view/17105.