The present invention relates to a spraying leg for an agricultural spraying machine, to an air-flow module for such a leg, and to an agricultural spraying machine provided with at least one such leg. Agricultural spraying machines which comprise spraying legs are known from the prior art, each spraying leg being provided with air diffuser and spray nozzle units, making it possible to send phytosanitary products driven by pulsed air onto the vegetation to be treated. The present invention aims to provide a spraying nozzle which can easily be adapted to the nature of the plants to be treated, in particular to the height and the configuration thereof. For this purpose, the present invention provides a spraying nozzle (J1, J2, J3), comprising at least one mounting (S), and a plurality of spraying modules (M1, M2, M3) attached to said mounting (S), each module (M1, M2, M3) forming an air-flow duct capable of each supporting at least one air diffuser (1) and spray nozzle (3) unit, the modules (M1, M2, M3) being connected to one another by connection means (17).
