Root crops such as potatoes and beetroots are the most problematic crops to harvest in Farming Simulator 19. You need a field, special planters and harvesters, but also:
You have to plow your field before every planting.
Root crops can't be stored in silos - store them in semi-trailers, sell them after harvesting or put on the ground. Use belt system to load them on a semi-trailer - this process is automatic. Build a carport to manage the space better.
Potatoes and beetroots can also be stored on pallets! Use Grimme RH 24-60 (Belt system) to place them on pallets.