An automatic dishwasher, comprises a wash chamber, a rotating spray arm having an outer periphery or rotation and having at least one outlet for introducing a stream of liquid into the wash chamber, a disperser located within the wash chamber and exteriorly of the outer periphery of the rotating spray arm where during at least a portion of one revolution of the rotating spray arm the disperser is fluidly connected such that the stream of liquid is transferred to the disperser, and a liquid volume controller to control the volume of liquid transferred from the rotating spray arm to the disperser. Wherein the disperser provides an additional source of water spray to utensils in the wash chamber and the liquid volume controller controls the amount of such additional spray.