Provided is a tillage tine which can perform deep tillage work by rotating in the other direction in addition to ordinary tillage work by rotating in one direction. A tillage tine (20) comprises a base portion (21) fixed to a tillage shaft (12), and a blade body (22) extending from the base portion (21) and curving opposite to the rotational direction of the tillage shaft (12), wherein the blade body (22) consists of a straight flat portion (23) extending from the base portion (21) to be flush therewith and a portion (24) bending from the distal end of the straight flat portion (23) in the direction of the tillage shaft. A wedge-shaped edge portion (25) having an end face on the side opposite to the rotational direction of the tillage shaft (12) as a top (25a) is formed at the distal end of the bending portion (24), and the bending portion (24) is formed such that a virtual line (31) passing through the central axis (O) of the tillage shaft (12) and perpendicular to the bending start line (30) of the bending
