Efeito residual de remineralizador como fonte de potássio na cultura da soja

Abstract

Given Brazil's heavy dependence on fertilizer imports and its status as the world's second largest consumer of potassium, it is essential to develop alternatives to mitigate this dependence. Thus, the use of remineralizers as an alternative potassium source for soybean cultivation can contribute to fertilization, and their residual effect can be utilized in successive crops. Therefore, the objective of this research is to evaluate soybean cultivation following corn, using “Completo” remineralizer as a potassium source, and to assess its residual effect on vegetative and productive aspects. The experimental design employed was a 2x6+1 factorial scheme, with two soil textures (medium and clayey), six doses of “Completo” remineralizer (0; 4, 8, 12, 16, and 20 Mg ha-1), and a control with “Ekosil”. “Ekosil” is a remineralizer registered with MAPA. To measure the results, plant height, number of branches, and pods per plant were evaluated. It was concluded that the use of remineralizer did not influence plant height. The clayey soil texture was superior for the number of branches. The increase in pod production was higher with “Completo” remineralizer in clayey soil texture.