Disclosed is an assembly for mitigating soil compacted by wheels or belts of a vehicle moving over soil and carried by the vehicle. The assembly operates with a series of blades affixed to a rotatable shaft and displaying an elliptical pattern. A hood confines about the top half of the blades and spans about the width of the assembly. A motor rotates the rotatable shaft. A mounting assembly mounts the assembly to the vehicle behind and in alignment with the vehicle wheels or belts. A cylinder assembly reversibly moves the assembly from a home position downwardly into compacted soil for its mitigation.