An agricultural baler includes a processing conveyance that is positioned between a pickup roll and a main bale chamber for conveying crop material from the pickup roll to the main bale chamber. The processing conveyance includes at least one of a bottom wall and side wall having at least one sieve with a plurality of openings extending through the sieve. The openings are sized and configured for allowing non-crop material to exit from the at least one processing conveyance through the openings.