PROBLEM TO BE SOLVED: To provide a farm implement for enabling a ridging multi covering device to perform a wed damage counter measure effectively while reducing a traction load.SOLUTION: In a farm working machine 5, a rotary tiller 10, a ridging machine 20 and a multi covering device 40 are mounted on the back portion of a tractor 1. The ridging machine 20 is equipped with a subsoil breaking device 30, this device 30 being composed of a grooving claw 31 and mounting means 32, and is arranged at a front transverse center of a ridge forming part and at a back part of a furrow forming part. The lower end of the grooving claw 31 is positioned below the lower end of a tillage claw 14 of the rotary tiller 10.SELECTED DRAWING: Figure 3
