An implement for preparing a seed bed has a front row of vertical discs,followed bythree rows of shanks, followed by harrows and then rolling baskets. Ahydraulic cylinderis mounted between each shank and the implement frame and exerts a constantselectedtrip bias force on the shanks that is adjustable up to 1300 pounds. Theimplement frameis configured such that a total weight on the wheels when the ground engagingtools arein the raised transport position is greater than about 850 pounds per foot ofwidth of theimplement frame. The implement is towed at speeds of at least seven miles perhourwith the shanks penetrating the soil to a depth of three inches or more.Residue is cut andburied and the field surface left firm and smooth.
