M.A. Thesis:

Energy efficiency study in pepper fields of Sabzevar city

In order to compare of the main crop production systems in terms of energy use efficiency, energy productivity, and cost-benefit ratio to the amount of Renewable and Non Renewable energy is consumed in Pepper fields was conducted in 2016. For the purposes of this review, data from 12 big farms and 8 small farms used for filling in questionnaires were collected through face to face conversations. The result showed that the highest energy input in big farms production system 27665.87 MJ, the highest energy output in big farms production system 4133.33 MJ, the highest energy use efficiency in big farms production system 0.14 and the highest the Energy productivity in big farms production system 0.18 (kg.MJ-1) in big farms production system were observed. The biggest share of all energy in the system assigned to the Fertilizer whereas insecticide energy has the lowest share of all energy. Among chemical fertilizer, Nitrogen fertilizer had the highest value on all production system. In total, the survey of index showed that big farms production system is more sustainable than small farms production systems.

Keywords: Energy productivity, fertilizer, Nitrogen , Energy efficiency, Prodction