انجمن اقتصاد کشاورزی ایران Agricultural Economics 2008-5524 7 2 2013 09 01 Economic Analysis of Transforming Flood Irrigation System to Drip Irrigation in Apple Orchards: Case of Urmia County ارزیابی اقتصادی تبدیل روش آبیاری غرقابی به آبیاری قطره ای در باغات سیب: مطالعه موردی شهرستان ارومیه 93 106 9269 FA کاوس دشتی جورنی کارشناس ارشد اقتصاد کشاورزی و مدرس مؤسسه آموزش عالی غیر انتفاعی صبا ارومیه محمدرضا ارسلان‌بد دانشیار دانشکده کشاورزی دانشگاه ارومیه لورنس انویه تکیه عضو هیئت علمی اقتصاد کشاورزی مرکز تحقیقات کشاورزی و منابع طبیعی استان آذربایجان غربی Journal Article 2012 04 25 Optimum use of water is very important for agricultural development.The purpose of this research was private economic analysis(determination of profitability for single orchardists) of transforming flood irrigation system to drip irrigation in Urmia county apple orchards. Necessary data were collected by interviewing and completing the questionnaires. Using investment economic evaluation methods and Excel Software five orchards with different ages of 15,17,20, 22 and 23 years for two cases of with and without irrigation transformation were evaluated. Results showed that net present value and cost benefit ratio in every five orchards in the case of drip irrigation were higher than in the case of flood irrigation. The results of sensitivity analysis showed that in each five orchards 10 percent decrease in income in comparison with 10 present increase in cost decreased net present value and cost benefit ratio and internal rate of return more but NPVs did not become negative; and with the increase of discount rate up to 30 percent net present value remained positive; but in comparison with two previous cases had higher decrease. In conclusion it should be mentioned that the results of this study shows that the profitability of apple production would be higher if drip irrigation system is used at the lower age; and would have the highest profitability if drip irrigation is used from the start of establishing the orchard. https://www.iranianjae.ir/article_9269_f8c84522811ab80c6b11873d9fa38e20.pdf