Technical evaluation sprinkler irrigation system implemented in some of the fields in Fars province

Introduction and Precision in designing and correct managements on sprinkler irrigation systems can help to improve and develop of these systems and cause efficiency raising in agriculture.
In this research, constant classic sprinkle irrigation systems (four systems) and one wheel move sprinkle system were evaluated and compared (in 2015). To evaluate of irrigation systems, Christiansen’s uniformity coefficient (CU), distribution uniformity (DU), application efficiency of low-quarter (AELQ), and potential application efficiency of low quarter (PELQ) were calculated in the experimental plots and adjusted with pressure changes for the whole system.
The maximum an uniformity coefficient and distribution uniformity in all the systems were in Darab, Arsenjan and Sarvestan counties and they were 80.78, 69.56 and 68.21 percent for uniformity coefficient, respectively. These values showed normal distribution of data and symmetry measurements than the average and the distribution uniformities were 66.12, 55.4 and 53 percent, respectively.
The reason of low distribution uniformity in systems was water losses for deep percolation, outdated system, pressure loss, and pressure and discharge variations of sprinklers. Homogenization of application efficiency potential of low quarter and the actual application efficiency in all evaluated irrigation systems were showed supply water less than plants water requirement. These values were low that showed water losses because of deep percolation and outdated systems