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Previous issue date: 2010 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Avaliaram-se a produtividade de mat?ria seca e a composi??o bromatol?gica de gram?neas forrageiras colhidas em ?rea degradada pela deposi??o de res?duos s?lidos urbanos, num experimento em esquema de parcelas subdivididas, com delineamento em blocos casualizados, com cinco gram?neas nas parcelas e tr?s cortes nas subparcelas no tempo, com quatro repeti??es. O teor e a absor??o de minerais e a concentra??o de metais pesados foram avaliados no 2? corte, no delineamento em blocos casualizados, com cinco gram?neas e quatro repeti??es. As gram?neas utilizadas foram Brachiaria decumbens cv. Basilisk, Brachiaria ruziziensis, Brachiaria brizantha cv. Marandu e cv. Xara?s e Panicum maximum cv. Tanz?nia, colhidas com 42 dias de rebrota??o. A produtividade de mat?ria seca por corte foi de at? 1.480 kg/ha, o teor m?nimo de prote?na bruta (PB) foi 9,5% e o teor m?dio de fibra detergente neutro (FDN) foi 62,3%. As gram?neas forrageiras apresentam resultados satisfat?rios em produtividade de mat?ria seca e composi??o bromatol?gica, constituindo em alternativa para a reabilita??o de ?rea degradada por res?duos s?lidos urbanos, assim como adequada composi??o mineral, ? exce??o de f?sforo, cujo teor foi muito baixo. As concentra??es de todos os metais pesados encontram-se abaixo do n?vel de toxicidade para as plantas. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2010. / ABSTRACT We evaluated the dry matter yield and chemical composition of grasses harvested in an area degraded by deposition of solid waste. The experiment was conducted in a split plot randomized block design with five grass plots and subplots in the three cuts time, with four replications. The content and the absorption of minerals and heavy metals were evaluated in the second cut, in a randomized block design with four replications and five grasses. The grasses used were Brachiaria decumbens cv. Basilisk, Brachiaria ruziziensis, Brachiaria brizantha cv. Marandu and cv. Xara?s, and Panicum maximum cv. Tanz?nia, taken at 42 days regrowth. The yield of dry matter per cutting reached up to 1480 kg / ha, the minimum content of crude protein (CP) was 9.5% and the average content of neutral detergent fiber (NDF) was 62.3%. The grasses have good results in dry matter yield and chemical composition, providing an alternative for the rehabilitation of degraded area by municipal solid waste, and adequate mineral composition, except for phosphorus content was very low. The concentrations of all heavy metals are below the level of toxicity to plants.
| Identifer | oai:union.ndltd.org:IBICT/oai:acervo.ufvjm.edu.br/jspui:1/553 |
| Date | 25 June 2010 |
| Creators | Miranda, Vanessa Soares |
| Contributors | Fernandes, Jos? Sebasti?o Cunha, Pereira, Odilon Gomes, Ribeiro, Karina Guimar?es, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Silva, Alexandre Christ?faro |
| 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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