custos operacionais da colheita mecanizada do cafeeiro operational costs of mechanized harvest of coffee

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ID: 146112
2007
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Ranked #53 of 193 articles by views in proc - the fourth ieee workshop on software technol for future embedded and ubiquitous syst, seus 2006 andthe second int workshop on collaborative comput, integr, and assur, wccia 2006

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Abstract
O objetivo desse trabalho foi avaliar os custos operacionais da colheita mecanizada do cafeeiro em duas passadas da colhedora. O trabalho foi desenvolvido na Fazenda Capetinga, Município de Boa Esperança, MG. Os experimentos foram realizados com duas passadas da colhedora, definidas de acordo com o índice de ocorrência de grãos verdes na planta. Na primeira passada, com média de 30% de grãos verdes, a velocidade foi fixada em torno de 0,45 m s-1, tendo-se variado as vibrações em 10,83, 12,50, 14,17 e 15 Hz (tratamentos T1, T2, T3 e T4, respectivamente). Na segunda passada, realizada sobre as mesmas parcelas da primeira passada, com média de 10% de grãos verdes, a vibração foi fixada em 16,67 Hz, tendo-se variado as velocidades em 0,60, 0,72, 0,29 e 0,45 m s-1 (tratamentos T1, T2, T3 e T4, respectivamente). Utilizou-se delineamento inteiramente casualizado, com quatro repetições, em parcelas aleatórias com 40 plantas por linha, em média. Para a análise dos custos de colheita, comparou-se a colheita mecanizada com a manual. A redução do custo total da colheita mecanizada é de 62,36% em relação à colheita manual, colhendo com a velocidade operacional de 0,45 m s-1 nas duas passadas.
The objective of this work was to evaluate the operational costs of mechanized harvest of coffee in two passes of the harvester. The work was carried out in the Capetinga Farm, Boa Esperança City, State of Minas Gerais, Brazil. The experiments were made with two passes of the harvester, defined according to the green grain index. In the first pass, with average of 30% green grains, velocity was fixed around 0.45 m s-1, and vibration varied at 10.85, 12.50 14.17 and 15 Hz (treatments T1, T2, T3 and T4). In the second pass, carried out in the same plots of the first pass, with average of 10% green grains, vibration was fixed in 16.67 Hz, and velocity varied at 0.60, 0.72, 0.29 and 0.45 m s-1 (treatments T1, T2, T3 and T4). It was utilized a completely randomized design with four replications, in plots with 40 plants per line, in average. For the analysis of harvest costs, the mechanized harvest was compared with the manual one. The total cost reduction of the mechanized harvest is 62.36% in relation to the manual harvest, with the operational speed 0.45 m s-1 in the two passes.
Reference Key
oliveira2007pesquisacustos Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Ezequiel de Oliveira;Fábio Moreira da Silva;Nilson Salvador;Zigomar Menezes de Souza;Sara Maria Chalfoun;Carlos Augusto Pereira de Figueiredo
Journal proc - the fourth ieee workshop on software technol for future embedded and ubiquitous syst, seus 2006 andthe second int workshop on collaborative comput, integr, and assur, wccia 2006
Year 2007
DOI
10.1590/S0100-204X2007000600009
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007000600009
Keywords
coffee

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