An apparatus for irrigation includes an elongate pipe carried on support carriages at longitudinally spaced positions to move in transverse to its length. The pipe carries water dispensing arrangements spaced along the pipe each including a first nozzle and a second nozzle carried on arms projecting forwardly and rearwardly of the pipe so that the nozzles dispense together an amount of water required at the location of the ground aligned with nozzles. The first and second nozzles are arranged such that the first dispenses at a higher rate and both dispense water onto the portion of the ground sequentially at a rate which is less than an amount which exceeds the infiltration rate of the soil, so that a total rate can exceed the infiltration rate of the soil. The arms can be flipped in height between high crop position and low crop position.