a harvester and a crop accumulator combination . the harvester is configured to transfer a harvested crop to the crop accumulator . the crop accumulator comprises at least one actuator to selectively discharge the harvested crops onto a field . a gps unit is configured with at least one virtual trip line . an ecu is in communication with the gps unit . the ecu is configured to selectively command the actuator of the crop accumulator to discharge harvested crop onto the field when the ecu receives a signal from the gps unit when at least one of the virtual trip line is being approached , the virtual trip line is being crossed , and the virtual trip line has been crossed .