ENERGY USE AND ECONOMICAL ANALYSIS OF POTATO PRODUCTION IN IRAN A CASE STUDY: ARDABIL PROVINCE

Abstract The purpose of this study is to determine energy consumption of input and output used in potato production, and making an economical analysis in Ardabil, Iran. For this purpose, the data were collected from 100 potato farms in Ardabil, Iran. Inquiries were conducted in a face-to-face interviewing November–December 2006 period. Farms were selected based on random sampling method. The results indicated that total energy inputs were 81624.96 MJ ha −1 . About 40% of this was generated by chemical fertilizers, 20% from diesel oil and machinery. About 82% of the total energy inputs used in potato production was indirect (seeds, fertilizers, manure, chemicals, machinery) and 18% was direct (human labor, diesel). Mean potato yield was about 28453.61 kg ha −1 , it obtained under normal conditions on irrigated farming, and taking into account the energy value of the seed, the net energy and energy productivity value was estimated to be 20808.03 MJ ha −1 and 0.35, respectively, and the ratio of energy outputs to energy inputs was found to be 1.25. This indicated an intensive use of inputs in potato production not accompanied by increase in the final product. Cost analysis revealed that total cost of production for one hectare of potato production was 3267.17 $. Benefit–cost ratio was calculated as 1.88.

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