BOOM TYPE SPRAYING TUBE

PURPOSE: To provide a spraying tube of boom type which can be extended by jointing, is mounted to an agrochemical solution-spraying cart so that it may be readily switched in its spraying direction transversely or longitudinally. CONSTITUTION: This spraying tube 1 is equipped with an attachment 2 for attaching the spraying tube to a solution-spraying cart, a guide 3 for fixing a boom 6, a boom supporter 4 to be connected movably or fixedly to the guide 3, the boom 6 which is freely rotatably pivoted to the boom supported 4 so that it may rotate from the longitudinal position to the transverse position and a spraying nozzle 22 which is held by the boom 6. A boom holding part comprising a holding piece fixed to the upper part of the guide 3 and another holding piece which is pressed by a spring to overlap on the former holding piece is mounted near the upper limit of the boom rotation range and, when the spraying tube 1 is used in the longitudinal position range, the tube is held by the boom holding part, and if necessary, an additional spray nozzle tube for extension 32 is connected through a joint 50 to the spraying tube 1.