Energy Consumption Flow and Econometric Models of Sugarcane Production in Khouzestan Province of Iran

The aims of this study were to determine the energy consumption and evaluate the inputs sensitivity for sugarcane production in Khouzestan province of Iran. The data were collected from sugarcane & by-Products Development Company during 2010–2011. The results showed that sugarcane production consumed a total energy of 80,986 MJ ha−1, in which the energy for electricity was 38.89 % followed by fertilizers (14.01 %), diesel (13.46 %) and seed (12.2 %), respectively. The share of direct, indirect, renewable and non-renewable energies was 61, 39, 21 and 79 %, respectively. The energy use efficiency and energy productivity were found as 1.38, 1.15 kg MJ−1, respectively. Cobb–Douglas production function was used to determine a relation between input energies and yield in sugarcane production. Results indicated that by using Cobb–Douglas production function to determine mathematical relationship between energy input and yield, human labor energy had the highest impact on yield. The sensitivity analysis indicated the marginal physical productivity value of 1.61 for human labor, which indicates that 1 MJ additional use of seed energy would lead to an increase in yield by 1.61. The impact of direct, indirect and non-renewable energies on yield was significant at 1 % level. The benefit-cost ratio for sugarcane production was calculated at 2.58.

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