Respostas ? aduba??o mineral e org?nica e faixas adequadas de atributos qu?micos de rejeito de minera??o de quartzito para duas esp?cies nativas

• Main Author: Gon?alves, Neubert Homem
• Other Authors: Fernandes, Luiz Arnaldo
• Language: Portuguese
• Published: UFVJM 2015
• Subjects: ?reas degradadas; Recupera??o; Dose recomendada; Atributo qu?mico
• Online Access: http://acervo.ufvjm.edu.br:8080/jspui/handle/1/336

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No. of bitstreams: 2 neubert_homem_goncalves.pdf: 444697 bytes, checksum: 5d20dc726c6a0961a5d4b09ee7e4ebea (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2014 === Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) === O decl?nio da minera??o de diamante em Diamantina (MG) e entorno, com a interrup??o das descobertas e o gradativo esgotamento das minas em opera??o est? levando a descoberta e a explora??o de maci?os de quartzito havendo a degrada??o da vegeta??o existente, e do solo, criando um ambiente bastante in?spito ao crescimento de plantas. Este trabalho objetivou avaliar o comportamento e as faixas adequadas ao crescimento inicial de Eremanthus erythropappus e Solanum lycocarpum, ap?s a influ?ncia da aduba??o mineral e org?nica quando cultivada em rejeito da minera??o de quartzito. O experimento foi conduzido em casa de vegeta??o, sendo os tratamentos dispostos no formato de delineamento inteiramente casualizado, com cinco combina??es de aduba??o mineral (AM) e org?nica (AO) e um tratamento adicional do rejeito sem AM e AO (Controle), com quatro repeti??es. As combina??es consistiram de 100% AM - 0% AO; 75% AM - 25% AO; 50% AM - 50% AO; 25% AM - 75% AO; 0% AM - 100% AO, sendo as doses de 150 mg de N, 140 mg de P, 150 mg de K e 5 g de esterco de curral por dm? de rejeito de quartzito correspondente a 100% AM e 100% AO. As demais doses foram proporcionais ?s combina??es dos tratamentos. Foram avaliados os par?metros de crescimento para cada uma das esp?cies, sendo estes, di?metro do coleto, altura de mudas, massa seca da parte a?rea (MSPA), de ra?zes (MSR) e rela??o MSR/MSPA. Atrav?s das combina??es adequadas de aduba??o, os maiores resultados apresentados pela candeia com rela??o ?s vari?veis avaliadas, foram na dose com 50% AM - 50% AO, correspondente a 75 mg de N, 70 mg de P, 75 mg de K e 2,5 g de esterco de curral; enquanto que para a lobeira, os maiores resultados ocorreram na dose de 25% AM - 75% AO, correspondente a 37,5 mg de N, 35 mg de P, 37,5 mg de K e 3,75 g de esterco de curral por dm? de rejeito de quartzito. As doses recomendadas para o crescimento inicial (90% produ??o m?xima da MSPA) da candeia foram 66,5 mg de N; 62,0 mg de P, 66,5 mg de K e 2,8 g de esterco de curral por dm3 de rejeito quartzito. Para a lobeira, as doses recomendadas foram 55,5 mg de N; 51,8 mg de P, 55,5 mg de K e 2,3 g de esterco de curral por dm3 de rejeito de quartzito. Foram definidas faixas adequadas dos atributos qu?micos de rejeito de minera??o quartzito para as duas esp?cies nativas. === Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2014. === ABSTRACT The decline in diamond mining in Diamantina (MG) and its surroundings, with the interruption of the findings and the gradual exhaustion of operating mines is leading the discovery and exploitation of massive quartzite going degradation of existing vegetation, and soil, creating an environment very inhospitable to plant growth. This work aimed to evaluate the behavior and appropriate range to the initial growth of Eremanthus erythropappus and Solanum lycocarpum after the influence of mineral and organic when grown in reject from mining of quartzite fertilization. The experiment was conducted in a greenhouse, with treatments arranged in a completely randomized design, with five combinations of mineral fertilizer (MF) and organic (OF) and an additional treatment of the reject without AM and AO (Control), with four replications. Combinations consisted of 100% MF - 0% OF; 75% MF - 25% OF; 50% MF - 50% OF; 25% MF - 75% OF; 0% MF - 100% OF, with doses of 150 mg of N, 140 mg of P, 150 mg of K and 5 g of bovine manure for dm? of reject quartzite corresponding to 100% MF and 100% OF. The remaining doses were proportional to the combinations of treatments. Parameters of growth for each species, these being, diameter, height of seedling, mass weight of shoot (MWS), root (MSR) and ratio MWR/MSPA were evaluated. Through appropriate fertilizer combinations, the greatest results presented by the Eremanthus erythropappus with respect to the variables evaluated, in dose were 50% MF - 50% OF, corresponding to 75 mg of N, 70 mg of P, 75 mg of K and 2,5 g of bovine manure; while for Solanum lycocarpum, the greatest results occurred in a dose of 25% MF - 75% OF, corresponding to 37,5 mg of N, 35 mg of P, 37,5 mg of K and 3,75 g of bovine manure for dm? of reject quartzite. The recommended doses for the initial growth (90% maximum production MWS) of the Eremanthus erythropappus were 66,5 mg of N; 62,0 mg of P, 66,5 mg of K and 2,8 g of bovine manure for dm? of reject quartzite. For Solanum lycocarpum, the recommended doses were 55,5 mg of N; 51,8 mg of P, 55,5 mg of K and 2,3 g of bovine manure for dm? of reject quartzite. The appropriate range of chemical attributes of reject quartzite mining for the two native species were defined.