A tillage tine includes a mounting base portion that is fitted to a mounting flange of a rotary tine shaft, a vertical blade portion that is formed from a planar plate that extends continuously in a lateral direction from the mounting base portion in side view to a lateral blade curve start portion, when a surface having a rotation axis of the rotary tine shaft as a normal line is set as a side surface, and includes a cutting edge that is formed at a lower side via a step from a lower edge of the mounting base portion, and a lateral blade portion that extends continuously from the vertical blade portion with the lateral blade curve start portion as a boundary, is formed by including a width dimension not less than a width dimension of the mounting base portion, from the vertical blade portion to a distal end side, is formed by gradually curving to an upper side in side view, and is formed from a curved plate that is curved to one side with the lateral blade curve start portion as the boundary. Thereby, the tillage tine is provided, which suppresses stress concentration at the time of being hammered into soil and a load fluctuation due to this, reduces tilling vibration and horsepower consumption, and is excellent in various kinds of tilling performance such as a throwing force, reversibility, plowing-in performance, soil crushing performance and land leveling performance.
