Innovative Automatic Self-Compensating Gated Irrigation Pipes

Gated irrigation pipes are an important tool for improving surface irrigation it's development on depends on replacing the gates by designed self-compensating nozzle (poppet nozzle). The main objective of this study was to improve the distribution uniformity of water discharge along the gated pipe length by developing a newly designed and locally manufactured self-compensating nozzles. Laboratory and Field experiments were conducted to validation the innovative nozzle of gated irrigation. The main results of this study showed the following: Under operating pressure head ranged between (3.3 to34 kPa) the mean discharge of poppet nozzle with disc diameters of 25 27 and 29 mm were 0.63 0.46 and 0.28 l/s Mean water discharge for 25mm disc diameter was constant (0.81l/s). The mean discharge of poppet nozzles along the pipes with initial pressure head (0.5m 1.0m and 1.5m) were 0.5 0.56 and 0.64l/s with mean coefficient of discharge (Cd) 0.77 0.75 and 0.72 respectively finally Surface irrigation is saving water! The surface irrigation efficiency is 90 %! No more calibration of gated irrigation pipes! Self-control no external energy and pressure flow and valve!.