Energy efficiency for open-field grape production in Iran using Data Envelopment Analysis (DEA) approach
Journal Title: International Journal of Farming and Allied Sciences - Year 2014, Vol 3, Issue 6
Abstract
In this study a non-parametric method of data envelopment analysis (DEA) was applied to evaluate the energy efficiencies of open-field grape producer in east-Azerbaijan of Iran. The DEA method was done based on eight energy inputs including human labour, machinery, diesel fuel, electricity, chemical fertilizers, farmyard manure, chemicals, water for irrigation, and with the single output of grape yield. Data were collected through face to face survey from 70 grape orchards in 6 towns in East-Azerbaijan province. Total energy input and output for open-field grape production were calculated as 82193.24MJ and 195763.41 , respectively in this study. The results show, the average of technical, pure technical and scale efficiency scores were 0.768, 0.903 and 0.850, respectively. Total optimum energy for grape production calculated as 60375.45 , showing the 26.53% of input energies could be saved if the farmers follow the results recommended by this study. Also, electrical (34.72%), chemical fertilizers (28.46%) and diesel fuel (23.88%) had highest contribution from total saving energy.
Authors and Affiliations
Saeid Sattari-Yuzbashkandi, Sadegh Khalilian and Seyed Abolghasem Mortazavi
Keywords
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