This difference between the application and overall efficiency of LEPA is significant for two reasons. One, a grower will only achieve high efficiencies when converting to LEPA if the system is designed properly. Second, programs to encourage conversion to LEPA should to include guidelines or standards for pivot design and performance to achieve the full benefits of its higher application efficiency. LEPA center pivot irrigation is the most efficient irrigation technology available. LEPA center pivot irrigation should be adopted by all farmers in order to promote conservation.
Drip irrigation is the most efficient irrigation technology available.
Drip irrigation should be adopted by all farmers in order to promote conservation. We have good data on the optimal water requirements of most crops. Agricultural irrigation water is very inexpensive, thereby encouraging waste. There is little opportunity for saving water in landscape irrigation. Turf requires 1 to 1.5 inches of water per week.