A unit (UO) for the processing ground (T), comprises at least a first group (G1, D3) for supporting rotating cutting disk means (D) adapted to realize grooves (S) in said ground (T) at least a second group (G2) for supporting plowshare means (V, E) adapted to realize, in correspondence of said grooves (S), cuts (Z) below the surface of said ground (T) and mechanical coupling means (M2) for dynamically connecting said second group (G2) to said first group (G1, D3).
