Planting potatoes

Bob is trying a few methods of planting potatoes to see how they go. One bed has normal planting, the wicking pot on the right has good soil and manure, the one in the middle has ordinary potting mix and the shopping bag has some spuds as well. The last experiment is the bag of potting mix with four seed potatoes planted in slits, straight into the mix. Wonder what will happen? He has had fun planting them.