investigation of input energy efficiency in dill (anethum graveolens l.) farming in rodehen region

background & aim: energy is one of important debates in agriculture ecology and for this reason; the ratio of output and input energy in different agriculture ecosystems has been calculated. if one can reduce, input energy level into farms through the indices like poisons, fertilization, tractor energy and lab our force. in addition to the net income of the farmers, this issue would play a significant role in preserving farm ecosystem from pollution and wrecker factors. martial & methods: for this reason, energy balance sheet in dill farms as well as input and output energy in 2009-2010 researched by distributing and questionnaire among farmers rodehen region. then, the input energy amount into farms via energy-consuming factors, mentioned above, with regard to special coefficients was computed. energy was computed based on seed function, chemical compound and its content as well. results & discussion: in this investigation, evaluated the level of stored energy 64668971.48 kcal per hectare and level of output energy 804640 kcal per hectare. energy efficiency on the basis of seed function 0.011 were estimated that the greatest part of energy depended on irrigation and nitrate fertilizer that with right management may reduce consumptive energy in farm and nitrate fertilizer and, on the other hand, to increase balance sheet.