Evaluation of organic and chemical fertilizer in the recovery of degraded areas arising from the mineral exploration

Abstract

Mining activities have environmental impacts; independent of the mineral is being extracted. The recovery of degraded areas arising geological research is characterized by the Agroforestry System between paricá specie (Schizolobium amazonicum) and braquiarão (Urochloa brizantha), which with the help of organic and chemical fertilizers promote the enrichment of phytosociological parameters and the restructuring of chemical and physical properties of the soil. The objective of the study was to evaluate the effects of organic and chemical fertilizer on the performance of biometric attributes of forest specie paricá: Circumference at Breast Height (CBH); Diameter at Breast Height (DBH); Dry Mass of Leaves (DML); Aerial Part Dry Mass (APDM) and Plant Height; and the physical properties (density and porosity) and chemical (NPK, Ca, Mg, and H + e Al) soil. The study was conducted in an area of 15 ha selected randomly in mining company of Godofredo Viana municipality, MA. The treatments were: No Fertilizer; Organic Fertilizer and Chemical Fertilizer with five repetitions and submitted to analysis of variance (p < 0.05) by Tukey test for 6 months of research. The organic fertilization promoted increments high in relation to chemical fertilizer and without fertilizer in all biometric attributes of the plant, as well as the physical and chemical properties of the soil. This study provides parameters for the companies of mining adopt the composting as mechanisms beneficial for recovery environmental characterized in techniques particular of each location, assisting the succession ecological and restructuring the resources natural.