High speed tillage system with discs and plow points

Apparatus for tilling soil adapted to operate at ground speeds in excess of about 41/2 miles per hour, comprising:

• frame means;
• support wheel means for supporting said frame means;
• a first set of discs carried by said frame means for tilling the soil, each disc of said first set being widely laterally spaced relative to adjacent discs of said first set to leave alternate strips of tilled and untilled ground having substantial width;
• a second set of discs carried by said frame means, the discs of said second set being widely laterally spaced relative to adjacent discs of said second set and located rearwardly and laterally of the discs of said first set to till said strips of untilled soil left by said first set, the leading edges of associated pairs of discs, of said first and second sets respectively overlapping in the range of about 1/2 to 2 inches, the discs of both sets having diameters greater than about 24 inches and set at a working angle in the range of about 27.degree.-35.degree.;
• a plurality of plow points carried by said frame means, each point located directly behind an associated disc of said second set to form a disc/point pair therewith, and arranged to till soil in the furrow formed by said associated disc at a depth greater than the working depth of said associated disc, each disc of said second set, other than a leading disc, being located rearwardly of the adjacent disc of said second set which is displacing soil in the same direction and arranged to throw soil laterally into the furrow formed by the adjacent forward disc and its associated plow point and into the furrow formed by a disc of said first set, whereby substantially all of the soil in a swath traversed by said apparatus is tilled in a single pass of said apparatus without leaving strips of substantial overlap, and said apparatus leaves the soil substantially free of ridges and furrows.