Adubação e sazonalidade na produção de fitomassa, metodologia de extração, rendimento e qualidade do óleo essencial de Ocimum selloi Benth
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Data
2003
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Universidade Estadual Paulista (Unesp)
Resumo
O presente estudo teve por objetivo avaliar a influência de dois níveis de adubação orgânica (25 000 e 50 000 kg. ha-1 de esterco bovino curtido) e dois níveis de adubação mineral (NPK - Sulfato de amônio- 150 e 75 kg. ha-1; Superfosfato simples-100 e 50 kg ha-1, Cloreto de potássio - 210 e 105 kg ha-1) em cinco épocas de corte (sazonalidade), na produção de fitomassa aérea e no rendimento e composição química do óleo essencial de duas populações: Paraná (PR) e São Paulo (SP) de Ocimum selloi Benth., planta nativa do Brasil, efetuando-se também, estudo comparativo do rendimento e composição química destes óleos essenciais de folhas obtidos através da técnica de hidrodestilação e dióxido de carbono supercrítico, para a melhor condição de cultivo obtida nos estudos de adubação orgânica e mineral. O experimento de cultivo em campo foi desenvolvido em área da Fazenda Experimental Lageado da Faculdade de Ciências Agronômicas (FCA) – UNESP, Botucatu –SP. O delineamento experimental adotado foi blocos ao acaso, com parcelas subdivididas no tempo (split plot in time), com quatro repetições. As parcelas foram constituídas pelos tratamentos de adubação, num total de quatro tratamentos e uma testemunha, e as subparcelas, pelos cortes. Utilizou-se propagação por sementes. Foram realizados cinco cortes por população, sendo estes efetuados aos 189, 308, 406, 490 e 592 dias após o plantio (DAP) para a população PR, e aos 203, 339, 410, 497 e 599 DAP para a população SP... .
The aim of this work was to evaluate the influence of two levels of organic fertilization (25 000 and 50 000 kg. ha-1 of bovine manure) and two levels of mineral fertilization (NPK - ammonium sulfate- 150 and 75 kg. ha-1; simple super phosphate –100 and 50 kg. ha-1, KCl – 210 and 105 kg. ha-1) at five harvest times (seasonality) in the aerial phytomass production (steams, leaves and inflorescences) and the yield and chemical composition of the essential oil of leaves and inflorescences of two populations: Paraná (PR) and São Paulo (SP) of Ocimum selloi Benth. O. selloi is a native plant from Brazil. A comparative study of the yield and chemical composition of these leaf essential oils obtained through the hydrodistillation technique and supercritical carbon dioxide extraction was realized, for the best cultivation condition obtained in studies of organic and mineral fertilization. The experiment was developed in area of the Department of Plant Production, Lageado Experimental Farm, Agronomical Sciences College (FCA) – UNESP/Botucatu - SP.The experimental design was completely randomized blocks, with split plot in time, with four repetitions. The plots were constituted by the main treatments (fertilization) and, the sub-plots, constituted by the harvest time (seasonality). Propagation for seeds was used. The cuts were made at 189, 308, 406, 490 e 592 days after the transplant (DAT) for PR population, and at 203, 339, 410, 497 e 599 DAT for SP population... (Complete abstract, click electronic address below).
The aim of this work was to evaluate the influence of two levels of organic fertilization (25 000 and 50 000 kg. ha-1 of bovine manure) and two levels of mineral fertilization (NPK - ammonium sulfate- 150 and 75 kg. ha-1; simple super phosphate –100 and 50 kg. ha-1, KCl – 210 and 105 kg. ha-1) at five harvest times (seasonality) in the aerial phytomass production (steams, leaves and inflorescences) and the yield and chemical composition of the essential oil of leaves and inflorescences of two populations: Paraná (PR) and São Paulo (SP) of Ocimum selloi Benth. O. selloi is a native plant from Brazil. A comparative study of the yield and chemical composition of these leaf essential oils obtained through the hydrodistillation technique and supercritical carbon dioxide extraction was realized, for the best cultivation condition obtained in studies of organic and mineral fertilization. The experiment was developed in area of the Department of Plant Production, Lageado Experimental Farm, Agronomical Sciences College (FCA) – UNESP/Botucatu - SP.The experimental design was completely randomized blocks, with split plot in time, with four repetitions. The plots were constituted by the main treatments (fertilization) and, the sub-plots, constituted by the harvest time (seasonality). Propagation for seeds was used. The cuts were made at 189, 308, 406, 490 e 592 days after the transplant (DAT) for PR population, and at 203, 339, 410, 497 e 599 DAT for SP population... (Complete abstract, click electronic address below).
Descrição
Palavras-chave
Adubação, Composição química, Oleo essencial
Como citar
MORAIS, Lilia Aparecida Salgado de. Adubação e sazonalidade na produção de fitomassa, metodologia de extração, rendimento e qualidade do óleo essencial de Ocimum selloi Benth. 2003. xviii, 250 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas de Botucatu, 2003.