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Previous issue date: 2010 / Objetivou-se com este trabalho avaliar os efeitos de diferentes aduba??es de solo e doses de N em cobertura na cultura da alface. O experimento foi realizado no campus JK da UFVJM, em Diamantina/MG, no per?odo compreendido entre junho e setembro de 2008. O delineamento experimental utilizado foi em blocos ao acaso com parcelas subdivididas, com tr?s blocos, cinco aduba??es de solo: NPK+esterco, NPK, esterco, composto org?nico e vermicomposto e cinco doses de N em cobertura, sendo a parcela experimental constitu?da por dezesseis plantas, espa?adas em 0,30 m x 0,30 m. Foram avaliados a massa seca e fresca da parte a?rea, di?metro da cabe?a, n?mero de folhas, altura de plantas, vari?vel can?nica e teores foliares de N, P, K, Ca, MG, S, B, Cu, Fe, Mn e Zn. As vari?veis de produ??o foram afetadas pelo tipo de aduba??o de solo e pelas doses de N aplicadas em cobertura. A aduba??o com esterco foi a que proporcionou os melhores resultados para as caracter?sticas de produ??o avaliadas, seguida das aduba??es com NPK+esterco e vermicomposto. Para o cultivo da alface na regi?o de Diamantina/MG, recomenda-se aplicar 160 kg.ha-1 de N em cobertura. O processo de vermicompostagem reduziu os teores de B, Cu, Fe e Mn na parte a?rea das plantas de alface. Os teores dos nutrientes nas plantas de alface variaram em fun??o da aduba??o de solo e das doses de nitrog?nio em cobertura, o que mostra que, com o aumento das doses de N, houve aumento nos teores foliares dos nutrientes analisados, exceto para o B, Cu e Zn. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2009. / ABSTRACT The objective of this study was to evaluate the effects of different soil fertilization and nitrogen rates in coverage on lettuce cultivation. The experiment was accomplished on JK campus of UFVJM, Diamantina/MG, in the period between June and September of 2008. The experimental design was a randomized block with split plot with three blocks and five fertilization of soil: NPK + manure, fertilizer, manure, organic compost, vermicompost and five doses of nitrogen in coverage, considering that the experimental plot was composed of sixteen plants spaced by 0.30 m x 0.30 m. The dry and fresh weight, head diameter, leaf number, plant height, canonical variable and foliar contents of N, P, K, Ca, Mg, S, B, Cu, Fe, Mn and Zn were evaluated. The growth variables were affected by the type of soil fertilization and N rates applied in coverage. The manuring was the one that provided the best results for the evaluated growth features, followed by fertilization with NPK+manure and vermicompost. For the lettuce cultivation in the region of Diamantina/MG, it is recommended to apply 160 kg.ha-1 N in coverage. The vermicomposting process reduced the B, Cu, Fe and Mn content in lettuce weights. The nutrient contents in lettuce plants varied according to soil fertilization and nitrogen dosage in coverage, which shows that with increasing doses of N, there was an increase in the analyzed foliar nutrients, except for the B, Cu and Zn.
| Identifer | oai:union.ndltd.org:IBICT/oai:acervo.ufvjm.edu.br/jspui:1/524 |
| Date | 24 September 2009 |
| Creators | Moura, Vin?cius Valadares |
| Contributors | Silva, Enilson de Barros, Yuri, Jony Eishi, Andrade Junior, Valter Carvalho de, Andrade Junior, Valter Carvalho de, 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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