Abstract

                                Field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore to assess the effect of Nozzle Size and Operational Pressure on the efficiency of Sprinkler System. The parameters taken for assessing the efficiency of irrigation were the percentage of total water loss and percentage of uniformity in water distribution. Among the four nozzle sizes tested, 4.76 mm x 2.38 mm size recorded the minimum water loss. In case of the operational pressures, louest pressure of 1.2 KSC was found to be superior by recording the lowest water loss and highest uniformity in water distribution. Under the combination of medium nozzle size of 5.56 mx 3.17 mm and lowest pressure of 1.2 KSC, the total water loss was minimum.

Key words : Sprinkler system, Nozzle size, Operational pressure.