Avaliação do potencial do sorgo (sorghum bicolor) na recuperação de área degradada por mineração de calcário

Abstract

The need for alternatives for the recovery of areas degraded by limestone mining makes the sorghum plant (Sorghum bicolor) a potential and versatile alternative given its adaptive and productive characteristics. Mining activity causes extensive areas with subverted soil and suppressed vegetation. In view of this, a bibliographical review and physical-chemical analysis of the conditions for execution were carried out, in addition to practical experiments under real conditions and in the laboratory. The ecophysiological expression in the waste pile in Caçapava do Sul illustrates the promising nature of this technique, however, attention must be paid, mainly, to the limitations in ecological succession and climatic variations. Furthermore, the scarcity of organic matter linked to the high potential of hydrogen caused deteriorating nutritional relationships in plants.