Hickmann, Clério, Álvaro Vilela de Resende, Carlos Alberto Silva, Julian Junior de Jesus Lacerda, Antonio Eduardo Furtini Neto, e Silvino Guimarães Moreira. 2017. “Soybean Response to NPK Fertilization of Sowing and Potassium at Topdressing in Soil of Improved Fertility”. Revista Agrogeoambiental 9 (2). https://doi.org/10.18406/2316-1817v9n22017942.