Process for producing a fertilizer in pellet form comprising the following steps: - predisposing at least one supply line adapted to enable at least one carrier to pass, - predisposing at least one second supply line adapted to enable at least one additive in a granular or powder form to pass, - predisposing at least one source of carrier, adapted to supply the first supply line, - predisposing at least one source of additive in granular or powder form, adapted to supply the second supply line, - predisposing at least one dispenser communicating with at least said sources (4; 5) respectively by means of the first and second supply lines (2; 3), and wherein the process for producing the fertilizer in pellet form further comprises the following steps: - continuously sending the carrier arriving from the corresponding source, through the first supply line, to the dispenser, wherein carrier is supplied to dispenser in a liquid or solid form, - continuously sending the additive arriving from the corresponding source, through the second supply line to the dispenser, - moving carrier and additive along a process advancement direction internally of the dispenser, - mixing carrier and additive internally of the dispenser for obtaining a fertilizing dispersion in a liquid or semi-liquid form, the mixing step comprising a sub-step of continuously advancing carrier and additive by pushing them along the advancement direction by at least one mixing element, the mixing element mixing the carrier and additive simultaneously with the continuous advancing step, wherein the carrier, when in the solid form, is liquefied during mixing internally of the dispenser, - continuously dispensing said fertilizing dispersion in a liquid or semi-liquid form to a pelletizer configured to enable to form the fertilizing pellets, - forming the pellets by the pelletizer by supplying the fertilizing dispersion in drop form on at least one support element, - cooling said pellets on said support element in order to enable to at least partially solidify the latter, wherein the mixing step is continuously performed and simultaneously with the carrier and additive moving step along the advancement direction in order to enable to continuously supply the fertilizing dispersion on the pelletizer. - predisposing at least one supply line adapted to enable at least one carrier to pass, - predisposing at least one second supply line adapted to enable at least one additive in a granular or powder form to pass, - predisposing at least one source of carrier, adapted to supply the first supply line, - predisposing at least one source of additive in granular or powder form, adapted to supply the second supply line, - predisposing at least one dispenser communicating with at least said sources (4; 5) respectively by means of the first and second supply lines (2; 3), - continuously sending the carrier arriving from the corresponding source, through the first supply line, to the dispenser, wherein carrier is supplied to dispenser in a liquid or solid form, - continuously sending the additive arriving from the corresponding source, through the second supply line to the dispenser, - moving carrier and additive along a process advancement direction internally of the dispenser, - mixing carrier and additive internally of the dispenser for obtaining a fertilizing dispersion in a liquid or semi-liquid form, the mixing step comprising a sub-step of continuously advancing carrier and additive by pushing them along the advancement direction by at least one mixing element, the mixing element mixing the carrier and additive simultaneously with the continuous advancing step, wherein the carrier, when in the solid form, is liquefied during mixing internally of the dispenser, - continuously dispensing said fertilizing dispersion in a liquid or semi-liquid form to a pelletizer configured to enable to form the fertilizing pellets, - forming the pellets by the pelletizer by supplying the fertilizing dispersion in drop form on at least one support element, - cooling said pellets on said support element in order to enable to at least partially solidify the latter,