impact of irrigation on yield and energy balance of the production of oil and cake of two sunflower varieties impacto da irrigação na produtividade e no balanço energético da produção de óleo e torta de duas variedades de girassol

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ID: 168698
2012
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Abstract
The energy balance for the production of sunflower oil and cake was carried out during the agricultural and industrial stage phase, where it was considered a cold extraction by hydraulic pressing, with the plant location in a rural area with a radius of 30km range. Data on productivity was used in two varieties of sunflower (Helio 358 and Aguará 04) grown in different seasons (2007/2008, 2008/2009), under different irrigation levels. Data showed that irrigation resulted in an increase in productivity of both varieties, and the best response was observed for Aguará 04 variety. Moreover, the increased intensity of irrigation negatively affected the energy balance, reducing the ratio between energy produced and energy used in the production chain. The most significant inputs in the energy intake were fertilizer followed by diesel oil, when irrigation was not used for. When the irrigation technique was used, the most significant inputs, in order of representativeness, were: energy, fertilizer and equipment.
Realizou-se o balanço energético para a produção de óleo e torta de girassol na fase agrícola e na fase de extração a frio por prensagem hidráulica, com a localização da usina em área rural, num raio de abrangência de 30km. Foram utilizados dados de produtividade de duas variedades de girassol (Helio 358 e Aguará 04) cultivadas em safras distintas (2007/2008, 2008/2009), submetidas a diferentes lâminas de irrigação. Os dados mostraram que a irrigação propiciou aumento de produtividade das duas variedades, sendo que a melhor resposta foi observada para a variedade Aguará 04. Por outro lado, o aumento da intensidade de irrigação afetou negativamente o balanço energético, reduzindo a relação entre energia extraída e energia utilizada na cadeia de produção. Os insumos mais representativos nas entradas de energia foram os fertilizantes, seguidos pelo óleo diesel, quando não se utilizou de irrigação. Quando utilizada a técnica de irrigação, os insumos mais significativos, em ordem de representatividade, foram: energia elétrica, fertilizantes e equipamentos.
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jordan2012engenhariaimpact Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Rodrigo A. Jordan;Eder P. Gomes;Guilherme A. Biscaro
Journal bioorganic and medicinal chemistry letters
Year 2012
DOI
DOI not found
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000600006
Keywords
irrigation bioenergy sunflower irrigação

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