System and method for destroying seeds in crop residue prior to discharge from agricultural harvester

A system for processing seeds that are present in crop material collected by an agricultural harvester, the system comprising at least one first shearing surface, at least one second shearing surface arranged opposite the at least one first shearing surface, and a clearance between the at least one first shearing surface and the at least one second shearing surface, the clearance adapted to receive a flow of crop material containing seeds, and further adapted to convey said flow of crop material between the at least one first shearing surface and the at least one second shearing surface, such that said flow of crop material contacts the at least one first shearing surface and the at least one second shearing surface to damage seeds present in the crop material and prevent the seeds from germinating after exiting the system,

• the system further comprising at least one first cylindrical body and at least one second cylindrical body, the at least one first shearing surface extending along a portion of the at least one first cylindrical body, and the second shearing surface extends along a portion of the at least one second cylindrical body,
• the at least one first cylindrical body comprising at least one drum, and the at least one second cylindrical body comprising at least one concave mounted around the at least one drum,
• the at least one first shearing surface comprising an outer surface on the at least one drum, the outer surface having a first plurality of projecting elements, and
• the at least one second shearing surface comprising an inner surface inside the at least one concave, the inner surface having a second plurality of projecting elements that intermesh with the first plurality of projection elements on the at least one drum.