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 portion (24) from the side view intersects the bending portion (24).
