An add-on tillage system is adapted to be mounted on an agricultural device to enhance tilling ability. The add-on tillage system includes a tilling unit with a common tool bar having attached thereto a first set of a plurality of tilling tines or coulters adapted to produce deep grooves in a tilled field. Means are provided for adjusting spacing between the tines or coulters, tilling tines or coulters up and down as a group being loaded by spring force, compressed air pistons or hydraulically actuated rams. A first mount is adapted to receive a tongue with hydraulic operations for mounting to a tractor. A second mount is adapted to receive a tongue with hydraulic mount to an agricultural device adapted to be pulled by the tractor. The add-on tillage system tills surface soil for a clean appearance, providing improved rain/irrigation water absorption, eliminating water run-off and erosion.