Evaluation of energy efficiency in dry farming of Barley (Hordeum vulgar L.) field in Azarbayejan-e-Sharqi province, Iran

The main goal of management of agricultural ecosystems is to maximize the energy flew and human’s artificial inputs. This investigation was conducted in order to evaluation of economical efficiency and crop energy of dry farming barley in Azarbayejan-e-Sharqi province. Information and data were obtained from barley farmers and Jihad-e- Agriculture organization of the province. In this study, routine scientific methods were used to change input and output data to their equal quantities and then energy efficiency (ratio of produced energy to consumed energy) was calculated. The rate of inputs engaged in these fields was 59.79 kcal/ha and the rate of produced energy was computed 7644.6 kcal / ha. The rate of energy efficiency (the ratio of out put / input) was. for this crop. Results revealed that most used energy in barley cultivation belonged to fertilizers and machinery energy, so consumption of the energy can be reduced and the energy efficiency can be increased for correct management.