comportamento espacial da demanda energética em semeadura de amendoim em latossolo sob preparo convencional spatial behavior of energetic demand in peanut sowing in latosol under conventional tillage

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ID: 256501
2010
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Abstract
A mecanização desempenha papel fundamental na produção agrícola e, consequentemente, na composição dos custos. Os adequados planejamento e gerenciamento dos sistemas mecanizados contribuem para a racionalização e redução dos gastos e melhoria do produto final. O objetivo deste trabalho foi estudar e caracterizar a variabilidade espacial da resistência mecânica do solo à penetração, da demanda energética e do desempenho operacional do conjunto trator-semeadora-adubadora em semeadura de amendoim, atuando com 5% de biodiesel etílico destilado de amendoim, em solo sob preparo convencional. As variáveis avaliadas neste estudo foram: força e potência requeridas na barra de tração, capacidade de campo efetiva, consumo de combustível, consumo de energia, patinhagem dos rodados e resistência mecânica do solo à penetração. Pelos resultados obtidos, concluiu-se que a variabilidade espacial das variáveis ligadas ao conjunto mecanizado depende principalmente da direção de deslocamento e que a resistência mecânica do solo à penetração não apresentou correlação com as outras variáveis. O consumo específico de combustível demonstrou correlação negativa com a força de tração, indicando que houve melhor aproveitamento da energia disponibilizada pelo combustível para maior exigência de tração.
The mechanization plays a major role in agricultural production and consequently at its costs. The correct management of mechanized systems contributes to its optimization and decreases its costs, making the final product better. The aim of this research was to study and characterize the spatial variability of soil mechanical resistance to penetration, energetic demand and operational performance of a tractor-seeder-fertilizer system at peanut sowing operation, working with 5% distilled ethylic peanut biodiesel, in conventional tillage system. Were evaluated the required drawbar force and power, effective field capacity, fuel and energy consumption, slippage and the soil mechanical resistance to penetration. By the results, were concluded that the spatial variability of the variables related to mechanized system depends on displacement direction; the soil mechanical resistance did not demonstrate correlation with the other variables. The specific fuel consumption showed negative correlation with the drawbar force, indicating better use of fuel energy available for greater traction demand.
Reference Key
toledo2010engenhariacomportamento Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Anderson de Toledo;Carlos E. A. Furlani;Rouverson P. da Silva;Afonso Lopes;Miguel J. Dabdoub
Journal bioorganic and medicinal chemistry letters
Year 2010
DOI
10.1590/S0100-69162010000300010
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162010000300010
Keywords
operational performance geoestatística penetrographeragriculture (general)

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