Abstract

Agricultural practices in drylands need to be continuously encouraged so that communities can utilize existing efficient irrigation technology. Irrigation tests on perforated pipe networks need to be conducted to test the distribution of secondary discharge due to the addition of pipe length in the lateral network of the perforated irrigation system. The test was conducted to determine the ability of the irrigation system to provide flow discharge in the primary and secondary pipe networks and the approach to calculating the perforated discharge network. The irrigation test was conducted on three lateral perforated pipe networks with a diameter of ½” and a perforation hole distance of 0.6m, a water tower with a capacity of 200 liters and a height of 4 meters. The perforated flow discharge was analyzed using basic data in the form of head and network design, the results of the analysis were presented in graphs and tables. The results showed that the secondary network flow rates decreased as the network moved further from the water source. An average increase in flow rate of 0.004 l/s was observed for each 0.1 m increase in head. The distribution of secondary flow rates, with variations in pipe length every 60 cm from hole 1 to 6, resulted in decreasing flow rates. In secondary network 1, the flow rate was 0.301 l/s–0.239 l/s, in secondary network 2, the flow rate was 0.276 l/s–0.226 l/s, and in secondary network 3, the flow rate was 0.267 l/s–0.221 l/s. The difference in secondary flow rates across pipe holes 1 to 6 obtained in secondary 1 was 0.06 l/s, in secondary 2 was 0.052 l/s, and in secondary 3 was approximately 0.049 l/s.

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