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Ciência e Agrotecnologia

versão impressa ISSN 1413-7054

Resumo

LOPES, Sebastião Eudes et al. Economic and technical evaluation of a ''skidder'' operation at various dragging distances and wood productivity of the operation. Ciênc. agrotec. [online]. 2009, vol.33, n.6, pp.1621-1626. ISSN 1413-7054.  https://doi.org/10.1590/S1413-70542009000600023.

This study was carried out in eucalyptus stands of a forestry company in the State of Goias-Brasil, for the purpose of technical and economic evaluation of a ''skidder''. The technical analysis was basically a time-and-motion study. In addition, a study on productivity, mechanical availability, and operational efficiency were also determined for each operation. The economic analysis consisted of determining machine operation costs, as well as evaluating significant interactions. A randomized-block design was used, in a 6x3x3 factorial arrangement (six operations, three productivities, and three 'dragging' distances), with four replications. Data were subjected to analysis of variance and to the Tukey test at 5% significance level. The skidder had its best performance in productivity of 100 m3 ha-1 and at distances up to 300 m.

Palavras-chave : Forestry machinery; yield; operational cost composition.

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