Biomassa e nutrientes em pinhão-manso e sistema de adubação com base no balanço nutricional

• Ano de defesa: 2011
• Autor(a) principal: Santos Neto, José Augusto dos
• Orientador(a): Fontes, Renildes Lúcio Ferreira
• Banca de defesa: Dias, Luiz Antonio dos Santos , Figueiredo, Luiz Henrique Arimura
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Doutorado em Solos e Nutrição de Plantas
• Departamento: Fertilidade do solo e nutrição de plantas; Gênese, Morfologia e Classificação, Mineralogia, Química,
• País: BR
• Palavras-chave em Português: FERTICALC; Adubação; Oleaginosas
• Palavras-chave em Inglês: FERTICALC; Fertilization; Oilseeds
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO
• Link de acesso: http://locus.ufv.br/handle/123456789/1621

The increasing world-wide pressure for the development of less pollutant automotive technologies has stimulated the use of the Biodiesel. The discussion on the insertion of biodiesel in the power source in Brazil has intensified itself, with focus on oil crops that propitiate greater use of workmanship in regions that are less developed economically. In that context, the Physic nut culture has aroused interest on part of national program, since the Northeast and North regions of Minas Gerais present great potential for the implantation of that culture. The Physic nut is a plant which produces oil with all the qualities necessary to be transformed into oil diesel. Currently it is aimed to establish practices of physic nut culture that allows making possible its exploitation under rational and economic techniques. International experiences and the observations of isolated plants have pointed with respect to one high productive potential, but there are few scientific studies. There are no criteria that allow interpretation of soil analysis and recommendation of agricultural liming and fertilizers for Physic nut crop. The use of the mechanistic methods makes possible to develop a System of Recommendation of Agricultural liming and Fertilizers in a much reduced time and without leading the experiments in accordance with the traditional method. The purpose of this work was to determine the biomass, nutrients in Physic nut, and developing a fertilization system based on the nutritional balance aiming at plant production to foment the production of biofuels in Minas Gerais State. The data were gathered in areas located in Mocambinho, Jaíba/MG, in dry land conditions, different ages of plantation (2, 3 and 4 years). In each parcel, it was used a plant for determination of dry matter, contents and partitions of the nutrients of its components. The amount of the nutrient supplied by the soil was calculated determining the quotient between nutrient content and the rate of its recovery by the extract, adding to nutrients supplied by the organic matter. Values of nutrients use efficiency for the rind and seed production were determined in order to get definite productivity. The amount of nutrient required by the culture was esteem by the sum of the amount of nutrient necessary for production of seeds and the requirement for production of stem, leaves, roots and fruits rinds. The production of total dry mass varied according to the age. The nutrients contents in the components varied, being higher for K, N and Ca between the macronutrients and Mn, Fe and Zn for the micronutrients. The fruits rinds presented K contents superior to the others components of the plant, being an alternative for use in the organic fertilization. The proposed system of recommendation established higher doses for N, P and K than the ones currently used for the Physic nut.