Tarbiat Modares University Journal of Agricultural Science and Technology 1680-7073 14 7 2012 12 01 Application of Data Envelopment Analysis for Performance Assessment and Energy Efficiency Improvement Opportunities in Greenhouses Cucumber Production 1465 1475 15181 EN R. Pahlavan Department of Agricultural Machinery Engineering, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Islamic Republic of Iran. M. Omid Department of Agricultural Machinery Engineering, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Islamic Republic of Iran. A. Akram Department of Agricultural Machinery Engineering, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Islamic Republic of Iran. Journal Article In the present study, an attempt has been made to use Data Envelopment Analysis (DEA) for assessing the technical efficiency and return-to-scale for greenhouse cucumber production in Iran. For this purpose, the data from greenhouses in Esfahan province, during one period of plant cultivation in one year including spring plants were randomly collected. The results indicated that total input energy, total output energy and energy ratio were 436,824 MJ ha^-1, 128,532 MJ ha^-1 and 0.29, respectively. <em>DEA</em> can be used to optimize the performance of any cucumber greenhouse. Based on input-oriented <em>CRS</em> and <em>VRS</em> models of <em>DEA</em>, the average values of pure technical efficiency, technical efficiency and scale efficiency were found to be 0.95, 0.83 and 0.88, respectively. Also the results revealed that, on average, about 30.27% of the total input energy could be saved without reducing the cucumber yield from its present level by adopting the recommendations based on the present study. https://jast.modares.ac.ir/article_15181_0e87de457be3fffbc57408200d762452.pdf