Sustainability assessment of an agricultural system based on environmental indicators, Khuzestan province, Iran
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2014, Vol 4, Issue 6
Abstract
This study investigates the energy inputs and crop yield relationship in greenhouse cucumber production in different production systems in Iran. Data were collected using face-to-face surveys from 18 farms producing greenhouse cucumbers in north and south of Khuzestan province. The results indicated the total average energy input of 565 MJ/m2 and 400 MJ/m2 for greenhouse cucumber production in northern and southern area respectively. The highest share in energy consumption belonged to diesel fuel (97%). The lowest total energy input belonged to cucumber production in 3000 m2 (345 MJ/m2) and 1000 m2 (376.6 MJ/m2) area in the southern part, whereas the highest energy consumption observed for cucumber production in the north part of the province as 614.5 MJ/m2 in 3000 m2 area. Results also determined the highest value of energy productivity in 3000 m2 (0.025 kg/MJ) and 1000 m2 (0.024 kg/MJ) for cucumber production in the southern part. In addition, the Cobb Douglas production function was applied to test the relationship among different forms of energy consumption. The regression results revealed that the coefficients of determination (R2) between yield and total energy input for cucumber in greenhouse production were 0.95. In addition, the contribution of diesel (at the 5% level), electricity and chemical (at the 1% level) energies for cucumber production were significant.
Authors and Affiliations
Nima Nasirian, Heydar Mohammadghasemnejadmaleki
Keywords
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