Abstract The modern irrigation systems have developed over the past few decades as a managerial tool for water management and increasing water productivity, especially in areas with limited water supply. By measuring various indicators of distribution uniformity and application efficiency within these systems, we can effectively assess the design, installation, and management strategies employed. Adopting cutting-edge technologies in irrigation management is essential. Furthermore, innovative irrigation management technologies introduce additional requirements that go beyond current design and implementation standards, necessitating thorough examination and development. In this regard, in the HormozAbad Semiram region in Isfahan province and the Cheshmeh Zaghi farm in Chaharmahal and Bakhtiari province, six solid-set sprinkler irrigation systems with portable sprinklers were studied regarding CU, DU, AELQ, and PELQ indices and the effect of uniformity on potato yield and irrigation water productivity. In this eva‎luation, the average values of CU, DU, AELQ and PELQ indices for the six irrigation systems were 76%, 65.3%, 55.3%, and 67.6% respectively. The average irrigation efficiency was found to be 57.4%, ranging from 43.3% to 77.4%. In general, with the distance from the sprinkler, the depth of the water reaching the ground decreases; the yield does not show a clear pattern, and the irrigation water productivity improves. Lack of distribution uniformity from two viewpoints resulted in diminished irrigation water productivity. In regions where crops receive more water, there is potential for higher yields. However, this excess water can lead to significant water loss as it drains deeply into the earth and carries away vital nutrients. The slight improvement in crop yield did not keep pace with the added irrigation water, resulting in a drop in the irrigation water productivity. On the other hand, in places that received less water, the reduction of water received caused a sharp decrease in potato yield, and in the function of irrigation water productivity, the amount of yield decreased (the numerator of the fraction) more intensively and caused a decrease in irrigation water productivity. In this research, guidelines for operation have been prepared to enhance the uniformity of sprinkler water distribution and application efficiency. Issues related to design, implementation, lack of proper utilization, poor management, limited knowledge among farmers about irrigation systems, farmer interference in the irrigation network, and the absence of continuous and periodic assessment of systems have all contributed to reducing their effectiveness and inefficiency. . Key words: Sprinkle irrigation, sprinkler uniformity eva‎luation, Application efficiency, precision management of irrigation, potato

مهدي قيصري

محمد شايان نژاد

محمدمهدي متين زاده , حميدرضا عشقي زاده