Abstract: An agricultural spraying machine comprising an assembly having at least two moving sections resting on wheels on the soil. This assembly supports at least two spray conduits having spraying nozzles and is attached to a tractor vehicle having a powder feed hopper. According to the inventive concept, the conduits are suspended in the moving section of the assembly and include means to adjust individually the lateral positions of the conduits perpendicular to the direction of movement of the tractor vehicle. Other means likewise provide for the adjustment in height and spacing of the spray nozzles of each conduit.