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Productivity and cost of farm tractor skidding

Author

Listed:
  • N. Gilanipoor

    (Tarbiat Modares University, Tehran, Iran)

  • A. Najafi

    (Tarbiat Modares University, Tehran, Iran)

  • S.M. Heshmat Alvaezin

    (Tarbiat Modares University, Tehran, Iran)

Abstract

In this study, productivity rate and operation cost of farm tractor were evaluated in a mountainous natural forest. Data for the study came from a detailed time study in the Research and Educational Forest of Tarbiat Modares University (REFTMU) and was used to develop a multiple linear regression model to predict the skidding cycle time. The results showed that effective independent variables of skidding time were skidding distance and slope of skid trail (P = 0.01). Average productivity rate ranged from 2.43 to 2.60 m2.h-1. Total time and effective time, respectively. Total cost of the system was 10.24 USD.h-1 whereas 4.58% of the cost of skidding resulted from personal delay. The cost and productivity resulting from this study emphasized the importance for foresters to consider a farm tractor when designing skidding operations in young stands or prescribing a combination of two machines in mature stands.

Suggested Citation

  • N. Gilanipoor & A. Najafi & S.M. Heshmat Alvaezin, 2012. "Productivity and cost of farm tractor skidding," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 58(1), pages 21-26.
    • Handle: RePEc:caa:jnljfs:v:58:y:2012:i:1:id:4804-jfs
    DOI: 10.17221/4804-JFS
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    References listed on IDEAS

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    1. F. K. Behjou & B. Majnounian & M. Namiranian & J. Dvořák, 2008. "Time study and skidding capacity of the wheeled skidder Timberjack 450C in Caspian forests," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 54(4), pages 183-188.
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