Economic analysis of micro-irrigation systems for different field conditions

In this study, drip irrigation, subsurface drip irrigation and under tree micro irrigation systems have been designed for the fields in different sizes and slopes and where plants are grown with different sowing-planting distances. Within the scope of the study, different projects have been produced for 4 with different size of fields of 1,5 - 12 hectares in which real project applications have been made. In this study, a total of 40 irrigation system projects have been prepared for the fields with a slope of 5% in one direction and for orchards having different planting pattern. As a result of the study, the costs of the pump, system control unit, main and manifold pipes, fittings and lateral pipes and dripper and sprinkler heads that compose the system components were calculated. When the findings obtained from the study were evaluated collectively; in all conditions, as land size increased, total costs per unit area decreased. In drip irrigation systems, total costs have increased average between 25% and 29% in sloping land conditions. The total costs of the systems under the conditions in which field crops were grown were 80% higher than orchards. The cost of subsurface drip irrigation systems was 19% higher on average than drip irrigation systems. Among the total costs, the cost of all kind of pipes and emitters ranged from 45% to 80%. In systems where mini sprinkler were used, the slope had no significant effect on costs. The costs of subsurface and drip irrigation systems were found to be 67% and 42% higher than the systems using mini sprinkler respectively.