A mobile picking platform system includes a mobile picking platform having a mobile carriage with a superstructure supporting multiple adjustable picking stations. A storage box carrier on the mobile picking platform has a pick position with storage boxes held at optimum heights for access by pickers on the picking stations, an unload position in which full storage boxes are unloaded onto a ground surface, and a load position for receiving empty storage boxes.A storage unit carries empty storage boxes and facilitates transfer of storage boxes to the mobile picking platform. A shuttle trailer may also be included in the system to transfer empty storage boxes to the mobile picking platform and storage unit. The shuttle trailer has a down position in which full storage boxes may be picked up from a ground surface, and an up position for transferring storage boxes to the storage unit or mobile picking platform.