The problem of furrows to close is eliminated. The problem of the forming of macrosod is eliminated; the rest of cultivations are mixed in an homogeneous way; the soil is soft. Elimination of a deep compact layer of earth that prevents the penetration of water and roots. Low energy consumption; reduced wear and tear of tyres (zero slipping); towing force is eliminated. Improve of soil's oxygenation and fertility; high working capacity: 33% more than a plough. The employment of the power through the PTO improves the tractor's performance.