Almasraf, S., Jury, J. and S. Miller. (2011). Field evaluation of center pivot sprinkler irrigation systems in Michigan. Final Draft. Department of Biosystems and Agricultural Engineering. Michigan State University. East Lansing, MI, USA.
Best, S. C. and H. R. Duke. (2001). Spatial distribution of water and nitrogen application under center pivot sprinklers. In Proc. of Central Plains Irrigation course and exposition. Central Plane Irrigation Association. Kearney, Nebraska (pp. 58-65).
Burt, C. M., Clemmons, A.J. and KH. Strelkoff. (1997). Irrigation performance measures: efficiency and uniformity. Journal of Irrigation Drainage Eng. 123(6), 423-442.
Camp, C. R., Sadler, E. J., Evans, D. E., Usrey L. J. and M. Omary. (1998). Modified center pivot system for precision management of water and nutrients. Journal of Applied Engineering in Agriculture. 14(1), 23-31.
Chagha, y. and A. A. Ghaemi. (2007). Check losses due to evaporation and Badbrdgy analog systems. Ninth Seminar of irrigation and reduce evaporation, Shahid Bahonar University of Kerman.
Christiansen, J. E. (1942) Standards. 43rd Ed. American Soc. Of Agric. And Biological Engineers. St. Joseph, MI 864 pp.
Doustmohammdi, M., Soltanimohammadi, A. and H. RezaiiRad. (2013). Evaluation performance center pivot irrigation system in Qom. In: First National Conference on Water Crisis, 15-16 May., Islamic Azad Univercity of Isfahan, Iran, pp. 410-419. (In Farsi).
Dukes, M.D. and C. Perry. (2006). Uniformity testing of variable-rate center pivot irrigation control systems. Precision Agriculture. 7(3), 205-218.
Ghaemi, A. A. (2004). Hydraulic Evaluation and Testing of Iranian Made Center Pivot Irrigation System. Journal of Agricultural Engineering Research. 5(19), 28-48. (In Farsi).
Heermann, D. F. and R. R. Hein. (1968) Pperformance characteristics of self-propelled center-pivot irrigation system. Trans ASAE. 11(1), 11-15.
Heermann, D., Wallender, W. and M. Bos. (1992). Irrigation efficiency and uniformity. Chapter 6 in Management of Farm Irrigation System, Pp: 125-149.
Hergert, G. W. (1976). Sprinkler application of fertilizer nutrients. Solutions Magazine‚ (1976).
Hezarjaribi, A. and B. Sohrabi. (2010)Evaluation of water distribution uniformity of varying severity of a modified center pivot system. Journal of Soil and Water Conservation. 17(1), 129-143. (in Farsi).
King, B. A., Wall R. W. and T. F. Karsky. (2009). Center-pivot irrigation system for independent site-specific management of water and chemical application. Journal of Applied Engineering in Agriculture. 25(2), 187-198.
Nelson, R. M., and R. W. Hill. (2010). Center Pivot Irrigation and Fertilizer Use Evaluation. Journal of the NACAA. 3(1), 199-209.
Ortiz, J. N., Tarjuelo, J. M. and J. A. De Juan. (2009). Characterisation of evaporation and drift losses with centre pivots. Journal of Agricultural water management. 96(11), 1541-1546.
Sayadi, H. and A. Falan. (2007). Design center pivot irrigation systems. The SID Publications, Tehran, page 220. (In Farsi).
Sohrabi, T. and R. Asilmanesh. (1998). Evaluation performance center pivot irrigation system in karaj. Journal of Agricultural Sciences and Natural Resources. 2(2), 1-14.(In Farsi).
Sohrabi, T. and M. Omidvar. (2002). Performance review, operational and technical difficulties rotary sprinkler irrigation systems in the region of Khorasan Jovin. Journal of Agriculture and Rural Sciences. 4(1), 38-51. (In Farsi).
Wright, J., Bergsrud, F., Rehm, G., Malzer, G. and B. Montgomery. (2002). Nitrogen Application with Irrigation Water–Chemigation. College of Agriculture, Food, and Environmental Sciences. University of Minnesota.
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