To be installed on Berg Trolley cart. With installed Berg hose reels there is no unnecessary pulling and dragging of hoses during watering and/or spraying. A spray boom is fixed to the operating pole installed on the front of the pipe-rail trolley cart and is controlled manually with a ball valve. The automatic hose reel places the hose on the path and takes it off again on its way back. Hence no more heavy pulling and no more in-and-out of the path – you just have to drive. The spraying is enhanced due to an even spray application by the spray boom and an always-controlled trolley speed.