US Patent 9578799 Seed meter unloading systems, methods, and apparatus

Systems, methods and apparatus are provided for controlling an agricultural implement having a plurality of row units. In some embodiments, seeds are planted by rotating a seed disc in a first direction; seeds are then unloaded from a seed disc into a seed pool by rotating the seed disc in a second direction. In some such embodiments an amount of rotation in the second rotation is selected to ensure that seeds are released into the seed pool and not released from the from the seed meter.