This tilling claw is provided with: a base section (1) mounted to a flange (S0) of a rotary claw shaft (S) a longitudinal blade section (2) formed from a flat plate that extends horizontally from the base section (1) to the beginning (G) of the curvature of a transverse blade section in side view and has a blade edge that differs in height from the lower edge of the base section (1) and the transverse blade section (3). The transverse blade section (3) is formed from a curved plate that extends from the longitudinal blade (2) contiguously with the beginning (G) of the curvature of the transverse blade, is formed with a width equal to or greater than the width of the base section (1) from the longitudinal blade section to a tip portion (I), curves gently upward in side view, and curves in one direction from the beginning (G) of the curvature of the transverse blade. When viewed in a cross-section taken perpendicular to the beginning (G) of the curvature of the transverse blade, the transverse blade section (3) is curved at an obtuse angle. The tip portion (I) of the transverse blade section (3), which is not curved, is provided with a first region (I1) extending upward from the lower end (I3) of the transverse blade section, and a second region (I2) that is contiguous with the first section (I1) and curved or bent inward, and extends to the upper end (I5). This tilling claw limits load changes caused when the tilling claw is driven into soil, reduces tilling vibration and power consumption, and excels in soil throwing performance, reversibility and ability to till soil deeply.Linvention concerne une griffe de labourage dotée : dune section de base (1) montée sur une bride (S0) dun arbre de griffe rotatif (S) une section de lame longitudinale (2) formée à partir dune plaque plate qui sétend horizontalement à partir de la section de base (1) au début (G) de la courbure dune section de lame transversale en vue latérale et présente un bord de lame qui diffère en hauteur
