low energy use / centre-pivot irrigation systems / lateral systems / electricity / low energy / portable systems / water filtration systems / medium energy use / high energy use / dripper systems / low energy costs / overall energy costs / energy-efficient equipment / higher energy / little energy / irrigation systems / energy use / Energy efficiency / soil monitoring equipment / similar infrastructure / Linear-move irrigation systems / Portable sprinkler systems / Hard hose systems / high energy costs / Fixed sprinkler systems / energy / /