2012-11-052012-11-052009-05-22VALENCIA, Wilmer Herrera. Avaliação de substratos orgânicos no cultivo de orquídeas nativas da APA ilha do Combu, Belém, Pará, Brasil. 2009. 46 f. Dissertação (Mestrado) – Universidade Federal do Pará, Núcleo de Meio Ambiente, Belém, 2009. Programa de Pós-Graduação em Gestão de Recursos Naturais e Desenvolvimento Local na Amazônia.https://repositorio.ufpa.br/handle/2011/3119The natural fibers are being considered in the cultivation of orchids, including the coconut fiber as the most promising. However, other natural organic waste can be used in the cultivation. The study was conducted in the Area of Environmental Protection Island Combu located in Belém. The objective was to evaluate the effects of organic substrates in orchids cultivation, where were selected Brassia chloroleuca Barb.Rod. and Sobralia macrophylla Rchb f. native of APA and subjected to four substrates considered as treatments (T1 - fiber from the stem of açai palm; T2 - the coconut fiber, T3 - seeds of açai palm and T4 - sawdust). The experimental design was completely randomized with 4 treatments and 4 replicates (10 individuals/replicate). The parameters were evaluated: the diameter, length, number of shoots, leaf number and rate of survival for pseudobulbos of Brassia chloroleuca and shoots of Sobralia macrophylla. Data were inserting into the spreadsheet program Bioestat 5.0. and subjected to analysis of variance and averages compared by the Tuckey test at 5% to assess the degree of significance of the effects of treatments. The results showed that the fiber from the stem açaí palm promoved development of vegetative structures followed by sawing in pseudobulbos of B. chloroleuca and S. macrophylla fiber to the stem and seeds of the açaí palm promoved greater growth. It was concluded that the fiber of the stalk of açai palm can be used in the cultivation of species with ecological and sustainable recovery after cutting the açaí palm.porAcesso AbertoFibra de resíduoResíduo orgânicoFibra vegetalRecursos naturaisÁrea de Proteção Ambiental Ilha do Combu - Belém (PA)DissertaçãoCNPQ::CIENCIAS BIOLOGICAS::BOTANICA