Evaluation of Energy Use in Rice Farming based on Econometric Model in North of Iran
Subject Areas :
Keywords: Rice, Analysis Sensitivity of Energy, Econometric Model and Productivity,
Abstract :
Evaluation of Energy Use in Rice Farming based on Econometric Model in North of Iran Adel Ranji1*, Davood Mohammad Zamani2and Mohammad Mehdi Amiri Khorie3 1,2. Researchers and Elite Club, Takestan Branch, Islamic Azad University,Takestan, Iran 3.Young Researchers and Elites club, Science and Research Branch, Islamic Azad University, Tehran, Iran Adelranji@yahoo.com Abstract: In order to investigate the influence of energy input, different mode of output energy and evaluation the sensitivity of energy inputs in rice production in North of Iran, was used of the sensitivity analysis of energy inputs by using of the Marginal Physical Productivity (MPP) and the Regression Coefficient. In the present study, after assessment the sample size by using of random sampling method, the data were collected of 72 rice farmer in 1391. The results showed that the amount of input and output energy in rice production is 61/23 (GJ. ha-1) and 139/11 (GJ. ha-1) respectively. Maximum used of input energy in rice production is related to irrigation to 40/51 (GJ. ha-1) (about 66% of the total input energy). Econometric models showed that the energy used by machine is the most important input energy that impact on the level of output energy (yield). The result of sensitivity analysis indicated that by used of 1Mj greater input energy in machine and Fertilizers can increased the rice yield by %68 and %60 respectively. Marginal Physical Productivity for labor and seed was negative that reflects the input from overuse or improper application of these inputs in rice farming, which requires the better management on the inputs that have negative productivity in rice production. Keywords: Rice, Analysis Sensitivity of Energy, Econometric Model and Productivity
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