In a pull type forage harvester which travels forwardly in a field to pick up crop material and feed it into a housing having a cutterhead with knives rotatable around a transverse axes. The cutterhead chops the crop material and deposits it in a transverse trough having an auger which carries the crop to a lateral discharge location. The improvement comprises a corn processor adapter to which chopped corn is conveyed over a floor to an upper and a lower roll rotatable on axes parallel to the cutterhead. The rolls form a bite to receive the corn and pass it between them to crush the kernels therein. The upper roll is positioned close to the cutterhead knives and in crop stripping relation thereto. The lower roll is positioned over the auger to hold down chopped corn thrown upwardly out of the trough.
