Smyth, Thomas Jot, and Joaquim Braga Bastos. “Phosphorus Fertilization for Corn and Cowpeas on a Typic Acrorthox in the Humid Tropics”. Pesquisa Agropecuaria Brasileira 20, no. 11 (April 16, 2014): 1259–1264. Accessed July 12, 2026. https://apct.sede.embrapa.br/pab/article/view/16333.