An agricultural harvesting vehicle (100) includes: a chassis (101)； a header (110) carried by the chassis (101) and configured to cut crop material； a chopper (180) carried by the (101) chassis downstream of the header (110)； a spreader assembly (410) carried by the chassis (101) downstream of the chopper (180)； and a windrow assembly (200) carried by the chassis (101) downstream of the chopper (180), the windrow assembly (200) including a windrow chute (210) defining a chute surface (213) and a leading edge (211) downstream from the chopper (180). The agricultural vehicle (100) is characterized by a rotatable conveyor (220, 320, 520, 620, 820) associated with the leading edge (211) and having a surface (223, 323, 523, 623, 823) with at least one conveyor projection (221A, 221B, 321A, 321B, 521A, 521B, 621A, 621B, 821) extending from the surface (223, 323, 523, 623, 823), the at least one conveyor projection (221A, 221B, 321A, 321B, 521A, 521B, 621A, 621B, 821) being configured to convey crop material toward the chute surface (213) and/or the spreader assembly (410) during rotation.
