Influência do Enxofre Elementar adicionado em um resíduo da mineração na liberação de nutrientes no solo.

Abstract

In the state of Paraíba and Brazil, the exploration of the vermiculite mineral has a high volume of waste around the mining companies, which have made a great environmental impact with polluting potential or contaminant. Thus, a rational solution that allows the reuse of the waste to reduce the environmental impact of this activity becomes urgent. In this work, the objective of this work was the influence of proportions of elemental stimulus at the end of the vermiculite operation on the release of nutrients in the soil. The experiment was carried out in a completely randomized design in 5 x 8 factorial, with five proportions of elemental sulfur (0, 50, 100, 150 and 200 g.kg-1). , 15, 30, 45, 60, 75, 90 and 105 days of incubation), with four replications, totaling 160 experimental plots. During 105 days of incubation, every 15 days, the contents of K, Na, Ca, Mg, P, SO -2 and the pH values were determined. The mineralization associated with elemental sulfur provided higher sulfate, calcium and phosphorus content, lower pH and K contents. The Mg contents were not influenced by the addition of fertilizer, already in relation to the Na content, there were significant increase. You may be able to use the same analysis formula at the same time as a potassium source, even if its effectiveness is not recommended. Likewise, the framework of application cases in cases of application in soils already rich in this nutrient as the Vertisols and Luvisols.