Productivity and cost of farm tractor skidding

N. Gilanipoor, A. Najafi and S.M. Heshmat Alvaezin
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N. Gilanipoor: Tarbiat Modares University, Tehran, Iran
A. Najafi: Tarbiat Modares University, Tehran, Iran
S.M. Heshmat Alvaezin: Tarbiat Modares University, Tehran, Iran

Journal of Forest Science, 2012, vol. 58, issue 1, 21-26

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.

Keywords: skidding operation; continuous time study; regression model; forest system efficiency; Iranian forest (search for similar items in EconPapers)
Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnljfs:v:58:y:2012:i:1:id:4804-jfs

DOI: 10.17221/4804-JFS

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