for rotation about a vertical axis and positioned laterally with respect to one another disks 44 have a plurality of bats 46 that act like vanes to positively direct crop residue in a lateral direction a cone 48 extends vertically upward from each disk 44 and provides a cover for a motor 50 for each disk the motor output shafts not shown cause the disks 44 to rotate as needed motor 50 may be in any one of a number of forms including hydraulic air electrical and a mechanical interconnection to a remotely positioned motor rotation of disks 44 is set up so that when viewed from above and looking towards the front of the agricultural harvester 20 as illustrated in fig2 the right side disk rotates counterclockwise and the left disk rotates clockwise so that they propel crop residue between them aft and around and laterally a left deflector 52 pivotally connected to the agricultural harvester 20 at point 56 and a right deflector 54 pivotally connected to the agricultural harvester 20 at 58 are positioned adjacent the spreader devices 42 the deflectors 52 and 54 are shown as pivoting around an axis that is generally parallel to the rotational axis of the disk 44 and pivotal between limits 52 a and 54 a and the solid representation of deflector 52 and dashed line 54 b the deflectors 52 and 54 are pivoted by the control system shown in fig3 to provide directional control of the.