PROBLEM TO BE SOLVED: To provide a tillage claw having high tillage performance, eliminating a vibration factor, suppressing tillage torque, and being economical.SOLUTION: A tillage claw 1 includes: a vertical blade 10 continuously extending from an attachment base 3 attached on a tillage claw shaft 60 and a horizontal blade 20. The tillage claw is curved in a reverse direction to a rotation direction from the vertical blade 10 to the horizontal blade 20. The horizontal blade 20 is curved to one side with respect to the vertical blade 10. The vertical blade 10 is inclined to one side with respect to the attachment base 3. The cross section shape of a tip of the horizontal blade 20 is curved in a protrusion shape in the whole width to the same direction side as a curve inner side direction of curving of the horizontal blade 20 curved to one side and is curved at a generally fixed curvature radius from a blade edge side to a back edge side of the horizontal blade 20.SELECTED DRAWING: Figure 1
