Abstract: An implement includes a toolbar fixed to a three-point hitch of an agricultural tractor. At least two working assemblies are carried by the toolbar, each including a support having two C-shaped claws that are connected at their upper parts to the support, and are joined together at their active lower parts, which are structured to penetrate the soil. A rotary structure is provided for chopping through mulch that accumulates in front of and in the claws. The rotary structure is arranged behind the claws, in their longitudinal mid-plane, so as to describe, about a horizontal transverse shaft, a circular path intersecting a curvature of each claw and, in the working position, extending substantially to ground level.