Obten??o de fertilizantes e substratos org?nicos a partir da compostagem de baga?o de cana mais torta de mamona e seu uso na produ??o de algumas hortali?as

• Autor(a) principal: Lima, Jonas Torres
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFRRJ
• Texto Completo: https://tede.ufrrj.br/jspui/handle/jspui/3024
• topic: Hortali?as; Mat?ria org?nica; Res?duos; Vegetables; Organic matter; Waste; Agronomia

Composting of organic wastes locally available is an alternative to meet the growing demand for fertilizers and organic substrates. The pressed cane bagasse and castor cake are materials abundant supplied in the region of Janu?ria-MG and in several other regions of Brazil. The objective of this study was to evaluate the composting process of mixing bagasse with castor cake and verify the performance of the product from the production of vegetables grown in the organic system. Composting was carried out with different ratios pressed pomace and crushed grape marc plus castor bean, evaluating various characteristics during the 120 days of process duration. In the second stage we evaluated the performance of the obtained compounds used as substrates in the production of lettuce, beetroot and tomato, compared with a commercial substrate. We also assessed the performance of the compounds as fertilizer for the production of lettuce and beets, using as reference an absolute control and cattle manure. It was observed that different proportions of ground and pressed bagasse pulp do not significantly alter the efficiency of the composting process and characteristics of the obtained compound. The substrates obtained by mixing compost bagasse with castor bean provided the seedlings of good quality, superior to seedlings obtained with the commercial substrate. The organic compound obtained with a mixture of sugarcane bagasse with castor bean replaced manure in the fertilizer lettuce and beetroot in organic production system. The use of bagasse and castor bean is technically feasible to obtain substrates and organic fertilizers.