Irrigation techniques. Centre pivot and moving lateral systems. Minimum performances and technical characteristics|Irrigation works, Water retention and flow works, Agricultural equipment, Spraying equipment (agriculture), Spraying, Watering equipment, Pivot joints, Mobile, Hose reels, Flexible pipes, Movement joints, Performance, Quality control, Performance testing, Mechanical testing, Hydraulic tests, Pipes, Elbows (pipes), Hydraulic equipment, Electrical equipment, Electric motors, Gear wheels, Electrical testing, Marking, Stability, Mathematical calculations, Classification systems, Dimensions, Dimensional tolerances, Fixing