Desenvolvimento de leguminosas florestais (Acacia mangium, Mimosa caesalpiniifolia e Enterolobium contortisiliquum) com fungos micorrízicos e bactérias fixadoras de nitrogênio em área degradada por mineração no estado de Sergipe

Abstract

Mineral exploration in the state of Sergipe has occurred since the colonial period on a small scale by the Portuguese crown, which extracted precious stones from all over Brazil. Only after 1934, with the DNPM creation - National Department of Mineral Production, investments were made in research and exploration on a commercial scale throughout the Brazilian territory. Therefore, one of this work objectives was to carry out a survey of the existing mining in the state, identifying the existence of metallic, non-metallic, limestone, energetic and soluble salts substances, standing out as the largest potassium producer in the national territory. In 2018, it raised a total of R $ 10,322,664.54 million and, in the period from 06/2018 to 03/2019, a total of R $ 649,584.39, provided by the Financial Compensation for the Mineral Resources Exploration (CFEM), contributing significantly for the state's economic development. Therefore, this work has another objective, which is to evaluate the development of Mimosa caesalpiniifolia and Enterolobium contortisiliquum species inoculated with Azospirillum brasilense and of Acacia mangium and Mimosa caesalpiniifolia species inoculated with Glomus clarum in an area degraded by mining in the state of Sergipe. The morphological parameters were measured: total height - H (cm), collection diameter - DC (cm), over 12 months, the results were analyzed by the Tukey test for comparison between averages. As a result, Enterolobium contortisiliquum and Mimosa caesalpiniifolia inoculated with Azospirillum brasilense showed lower averages in height, diameter and survival rate in relation to the respective controls without inoculation; Mimosa caesalpiniifolia inoculated with Glomus clarum showed the highest averages in height and survival rate among all treatments, in addition to the largest diameter when compared to the respective control without inoculation; Acacia mangium without Glomus clarum had the largest diameter and the second highest height, however the survival rate was low, overestimating the average height and diameter.