Disclosed is a sprayer for the nebulisation and the spraying of phytosanitary products in aqueous solutions on agricultural products arranged in rows. The sprayer comprises a plurality of independent vertical tubular structures (1) with an inverted truncated cone shape. Each of the vertical tubular structures (1) comprises an upper fan (2) that delivers low velocity air (2), at a high volumetric airflow rate. The low velocity air (2) is uniformly discharged towards crops to be treated through vertical slits (5). There are injection nozzles (7) of phytosanitary products that are arranged at the vertical slits (5). The injection nozzles (7) are associated with and interposed by adjustable winged section guide pins (8). Each of the vertical tubular structures (1) is endowed with a lower tray (9) for the retrieval of residual liquids.
