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Previous issue date: 2010 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / A copa?ba (Copaifera langsdorffii) ? uma esp?cie arb?rea, da fam?lia Leguminosae (Caesalpinioideae) encontrada no cerrado, mata atl?ntica e matas de galeria. Assim como outras diversas esp?cies florestais, come?aram a receber em meados da d?cada de 70 maior import?ncia na produ??o de suas mudas em viveiros florestais para uso em diversos projetos. O volume e tipo de substrato s?o os primeiros aspectos que devem ser investigados para se garantir a produ??o de mudas de boa qualidade em viveiros florestais. A luminosidade ? outro fator de enorme import?ncia na produ??o de mudas, sendo que varia??es na qualidade e quantidade, presen?a ou aus?ncia de luz ir? influenciar o desenvolvimento da planta. Desta forma, o presente trabalho teve como objetivo avaliar a influ?ncia de dois volumes de diferentes tipos de substratos e n?veis de sombreamento crescentes no crescimento e teores de nutrientes em mudas de copa?ba. O experimento foi conduzido por 130 dias em DBC casualizados no esquema fatorial 2 x 5, sendo avaliado dois volumes dos substratos Bioplant?, 70% vermiculita + 30% casca de arroz carbonizada, 40% vermiculita + 30% casca de arroz carbonizada + 30% fibra de c?co, 50% vermiculita + 30% casca de arroz carbonizada + 20% areia, 70% vermiculita + 15% casca de arroz carbonizada + 15% vermicomposto. Estas dez combina??es foram distribu?das aleatoriamente em quatro blocos com diferentes intensidades luminosas: 0, 30, 50 e 70% de sombreamento. As mudas de copa?ba podem ser produzidas satisfatoriamente nos dois volumes (180 e 280 cm?) dos diferentes substratos estudados e em n?veis de sombreamentos mais elevados, demonstrando grande plasticidade. O uso de 180 cm? de substrato foi suficiente para produzir mudas com bom desenvolvimento, ?ndice de qualidade e teores nutricionais. Os substratos 70% vermiculita + 30% casca de arroz carbonizada, 40% vermiculita + 30% casca de arroz carbonizada + 30% fibra de c?co, 50% vermiculita + 30% casca de arroz carbonizada + 20% areia, 70% vermiculita + 15% casca de arroz carbonizada + 15% vermicomposto apresentaram ligeira superioridade em rela??o ao Bioplant para as caracter?sticas morfol?gicas das mudas, entretanto as plantas crescidas nesse substrato apresentaram maiores teores de P, K, Ca, S e Zn. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2010. / ABSTRACT The copa?ba (Copaifera langsdorffii) is a tree, the family Leguminosae (Caesalpinioideae) found in savannah, forest and gallery forests. Like many other forest species, began to receive in the mid-70s most important in the production of seedlings in its nursery for use in various projects. The volume and type of substrate are the first things that should be investigated to ensure the production of good quality seedlings in forest nurseries. Brightness is another factor of great importance in plant propagation, and variations in quality and quantity, presence or absence of light will influence plant development. Thus, this study aimed to evaluate the influence of two volumes of different types of substrates and increasing levels of shading on growth and nutrient content in seedlings of copaiba. The experiment was conducted for 130 days in a randomized block design in a 2 x 5 factorial scheme being evaluated two volumes of the five following substrates: Bioplant ?, 70% vermiculite + 30% carbonized rice hulls, 40% vermiculite + 30% carbonized rice hulls + 30% coir, 50% vermiculite + 30% carbonized rice hulls + 20% sand and 70% vermiculite + 15% carbonized rice hulls + 15% vermicompost residue textiles. These ten combinations were randomly distributed in four blocks according to the following distinct brightness: 0, 30, 50 e 70 percentages of shading. Seedlings Copaiba can be satisfactorily produced in two volumes (180 and 280 cc) of different substrates and studied at the highest levels of shading, showing great plasticity. The use of 180 cc of substrate was sufficient to produce seedlings with normal development, content quality and nutritional content. The substrates 70% vermiculite + 30% rice hulls, 40% vermiculite + 30% rice hulls + 30% coconut fiber, 50% vermiculite + 30% rice hulls + 20% sand, 70% vermiculite + 15 % rice hulls + 15% vermicompost showed slight superiority over Bioplant for the morphological characteristics of seedlings, however the plants grown on the substrate showed higher levels of P, K, Ca, S and Zn.
| Identifer | oai:union.ndltd.org:IBICT/oai:acervo.ufvjm.edu.br/jspui:1/556 |
| Date | January 2010 |
| Creators | Dutra, Tiago Reis |
| Contributors | Santana, Reynaldo Campos, Soares, Cl?udio Roberto Fons?ca Sousa, Grazziotti, Paulo Henrique, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM) |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFVJM, instname:Universidade Federal dos Vales do Jequitinhonha e Mucuri, instacron:UFVJM |
| Rights | info:eu-repo/semantics/openAccess |
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