The effect of tractor supply in Iran agriculture from a macro plan point of view

https://doi.org/10.17221/28/2008-RAECitation:Ghadiryanfar M., Keyhani A., Akram A., Rafiee S. (2009): The effect of tractor supply in Iran agriculture from a macro plan point of view. Res. Agr. Eng., 55: 121-127.
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The aim of this study was to investigate the effect of the tractor supply on agricultural yield from a macro plan perspective. The required information was obtained from the Institute of Agricultural Machinery Extension and Ministry of Jihad-e-Agriculture of Iran. Regarding the number of tractors distributed, the maximum number of tractors distributed in Iran was 37 996 in 1983. The effect of this distribution pattern on the crops yields and planted area was investigated for a thirteen-year period from 1983 to 1996. The results showed that these tractors had significant effects on the crops yields and planted area. Also it was inferred that the power distribution in Iran agriculture with the current trend is not acceptable and no significant changes are expected from the current policy. It seems that the Iran agriculture market needs a shock like that in 1983, and that many tractors with different engine sizes should be supplied into the market in a short period of time.
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