Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/28903
Título: Jatropha seed oil content and yield under different irrigation and potassium fertilization levels
Título(s) alternativo(s): Teor e produção de óleo de pinhão-manso submetido a diferentes níveis de irrigação e adubação potássica
Palavras-chave: Chemical extraction
Potassium fertilization
Drip irrigation
Biodiesel - Production
Extração química
Potassium fertilization
Irrigação por gotejamento
Biodiesel - Produção
Data do documento: Nov-2012
Editor: Associação Brasileira de Engenharia Agrícola
Citação: DEUS, F. P. de et al. Jatropha seed oil content and yield under different irrigation and potassium fertilization levels. Engenharia Agrícola, Jaboticabal, v. 32, n. 6, p. 1089-1096, nov./dez. 2012.
Resumo: The aim of this research was to evaluate the effects of different irrigation depths and potassium dosages, of Jatropha seed oil content and yield. The experimental design used was randomized blocks, in split-plots, with four replicates. The treatments were four water depths (plots) and four potassium dosages (subplots) applied through irrigation water. The water depths were applied based on the percentage of accumulated evaporation of a Class A (ECA) tank and of rainfall, as following: L0 = without irrigation, L40, L80 and L120, representing 40, 80 and 120% of the balance, respectively. The potassium dosages were K30, K60, K90 and K120 (30, 60, 90 and 120kg ha-1 of potassium, respectively). The oil extraction of samples was done through chemical extraction by organic solvent. The seeds used in this test were from the sampling of two seed productions from 2009, second year of crop production. It was possible to observe that irrigation use increased oil yield and decreased the oil content of Jatropha seed. Potassium fertilization did not influence oil content and yield. There was a relative increase of efficiency in water use producing oil until certain water depth, and after that there was a decrease.
URI: http://repositorio.ufla.br/jspui/handle/1/28903
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