Abstract: A machine control system for an agricultural operation includes sensors mounted on the machine and providing output signals corresponding to machine operations. A roll-up reporting function produces reports of machine operation, and status. The system can be programmed for providing such reports a predetermined intervals, e.g., at the start of each work day. A portion control method embodying the present invention includes the steps of: providing sensors on an agricultural machine; outputting from the sensors signals corresponding to machine operations; roll-up reporting of the machine operations; and comparing the operational report to a work order for the machine.