1.reliable function 2.used widely in Africa 3.Center Pivot irrigation system Center Pivot irrigation system Technical ... 142188206268330368392422452480516Amount of Tower23345667788Maximum flow rate(m3/h)5692108153168200212227242256280Irrigation area(ha.)6.311.113.3122.534.242.548.2255.8964.1572.3583 ... 4Span length(m)44 , 50 , 56 , 60Over hang length(m)6 , 12 , 18 , 20End pressure(M Pa)0.15Rainfall(mm/ ...