Factors affecting repair costs of small tractor use in Riau Province, Indonesia. (142)

Authors

  • Ujang Panman Doctoral Student at the United Graduate School of Agricultural Science Kagoshima University, 1-12-24 Korimoto, kAgoshima 890-0065, Japan and Lecturer at the Department of Agricultural Economics, Faculty of Agriculture, Riau Islamic University, Jl. Kaharuddin Nasution No. 113 km 11 Perhentian Marpoyan Pekanbaru 28284, Riau, Indonesia.
  • S. Uchida Department of Agricultural Science, Faculty of Agriculture, Saga University, 1-honjou-machi, Saga-Shi, Japan.
  • S. Inaba Department of Agricultural Science, Faculty of Agriculture, Saga University, 1-honjou-machi, Saga-Shi, Japan.
  • T. Kojima Department of Agricultural Science, Faculty of Agriculture, Saga University, 1-honjou-machi, Saga-Shi, Japan.

Keywords:

Annual repair costs, small tractor, cumulative repair costs, model

Abstract

Factors affecting annual repair costs were analyzed and a reasonable function was proposed by including more explanatory variables than the previous models for small tractors. Data used in this study were based on a survey of 62 tractors from three selected regencies in Riau Province in 2003. As a result, tractor age, usage, horsepower and operator skill were statistically significant explanatory variables, whereas the ownership system and manufacturer weren’t. Using the proposed model, the annual repair costs were estimated to increase during the expected life of tractors. Changes in usage, horsepower, and operator skill increased more rapidly for annual and cumulative repair costs over the tractor lifespan. Of the significant variables, the effect is more pronounced for operator skill variable. The results suggest that priority should be given to operator training and selection.

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Issue

Volume 85 Number 2

Section

Research Papers