disk gang has an independent depth adjustment relative to the shanks or cutting disk gangs that is accomplished by mechanical screw adjust or by optional hydraulics a drag harrow or rotary reel can be used if necessary with any of the above combinations to improve field surface finish and eliminate subsequent leveling passes allowing direct planting referring now to fig1 for a more detailed description reference numeral 10 generally designates the tillage implement of the instant invention implement 10 includes a rigid main frame generally designated 11 that is adapted to be attached at its front to the rear of an agricultural tractor by means of a conventional hitch 12 such as the single strap pull clevis style shown the main frame 11 includes first and second elongated inside frame members 16 16 a and first and second outside frame members 17 17 a these inside and outside frame members are affixed to front and rear transverse support members 19 19 a a third transverse support member 20 is pivotally interconnected to the forward ends of inside frame members 17 17 a and provides support for a tongue 22 an additional frame member 23 interconnects the inside frame members about two thirds along the length thereof to provide additional structural support for wheels to be discussed further below welding bolts and other fastening means securely interconnect this frame structure creating a clean and simple design capable of handling tough soil and residue conditions this design which in practice is made primarily of 6 by 8 inch box beams allows for longer life and durability additional residue flow and the weight necessary to penetrate the toughest soil conditions frame 11 is supported for movement across a field or along a road by wheels 24 24.