Sunday, October 22nd, 2017

Study on energy efficiency in corn production of Iran

Publication year: 2011brbSource:/b Energy, In Press, Corrected Proof, Available online 26 July 2011brNarges, Banaeian , Morteza, ZangenehbrThe aims of this study are determining the energy use, qualitative analyzing of energy flow and also investigating energy efficiency by Data Envelopment Analysis (DEA) in corn production of Iran during a seven years period. Results indicated that the average of total energy input increased from 40.98 GJ ha−1 in 2001 to 63.64 GJ ha−1 in the year of 2007. Similarly, the average of total output energy rose from 89.03 to 107.54 GJ ha−1 in the same years, respectively. Also the results showed that average energy use efficiency, energy productivity, specific energy and net energy gain in the studied period was 2.59, 0.17 kg MJ−1, 7.24 MJ kg−1 and 51.34 GJ ha−1,…br Highlights: ► The average of total energy input increased from 40.98 GJ ha−1 in 2001 to 63.64 GJ ha−1 in the year of 2007. ► Energy use efficiency and energy productivity were 2.59 and 7.24 MJ kg−1, respectively. ► Average energy efficiency score was 90.26%. ► If farmers operate efficient, overall 12,157.24 MJ ha−1 will be saved which is mostly (75.14%) by machinery energy.


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