Patent ID: 8220559

Claim:
A deep tillage plough assembly to be mounted on a beam to be moved in a longitudinal forward direction over a soil layer, having a soil surface, to be worked by the assembly, said assembly including: a digging shank to extend downwardly into the soil layer; a digging point having a lower most extremity and to be fixed to a lower portion of the shank, the point having a leading face transverse of said direction and inclined to said direction by 20 to 40° so as to be downwardly inclined in said direction, and having a transverse width of 40 to 60 mm at said leading face; a seed bed forming tool supported so as to be behind said point, and to be located to form a seed bed at a soil depth of 30 to 70 mm so as to form the seed bed at a location higher than said lower most extremity; a seed delivery tube to deliver a seed to the bed formed by said seed bed forming tool; and a press member to engage soil behind said tube to aid in ensuring seed delivered to said bed is covered by soil.