A weeding rotor (1), in particular to be used in the agricultural field, has a motorized tubular shaft (2), which extends along a longitudinal axis (A), and is provided with a cylindrical wall (3) having first openings (4) facing each other two by two; a plurality of spools (6) accommodated in the tubular shaft (2) and placed side by side along the longitudinal axis (A), each spool (6) being engageable to rotate with respect to the tubular shaft (2), and having two second openings (7) which are aligned with each other and can be aligned with two respective first openings (4); a plurality of working wires (5), each of which is windable about a respective spool (6) and is configured to arrange two respective end portions through two respective first openings (4) outside the tubular shaft (2); and a pushing mechanism (8) for selectively compressing the spools (6) axially against each other and against an end of the tubular shaft (2).
