I broke down and ordered some composted manure and hay. After adding it I also tryed adding some clay to the one small field to see if it helps hold the nutrients in place. These are small fields, 20 by 45 each, 6 all total so I can rotate crops easier.
I also finished the nursery enough to place 2 hens in it. they are happily sitting and waiting for the great hatch day. Woohoo more chickens!