System for the disinfection of agricultural soil includes an electric energy source, at least one radiofrequency or microwave generator connected to the electric energy source and arranged to convert the electric energy into electromagnetic power and a plow-like electromagnetic applicator connected to the radiofrequency or microwave generator via wave-guiding lines, the plow-like electromagnetic applicator being arranged to be inserted into the soil so as to transmit the electromagnetic power to the soil, thus obtaining a disinfection of the soil.