Abstract: A soil cultivator comprising a supporting frame; means for attachment of said frame to a tractor; a first lever arm pivoted at one end to said frame, a second lever arm pivoted at an intermediate position to the other end of said first lever arm, said second lever arm being provided with a first arm portion extending downwardly below said intermediate pivot point and having secured thereto a shovel or the like soil working tool, and with a second arm portion integral with said first lever arm portion and extending upwardly above said intermediate pivot point, the free end of said second arm portion being into sliding engagement with a fixed guide element secured to said support frame, and being urged downwardly along said guide element by spring means, while it may be caused to slide upwardly along said guide means in opposition to the force of said spring by effect of the resistance opposed by the soil to the progress of the working tool, so as to only partially lift the working tool with respect to the soil