Reclaimed or not, I would treat it like any other soil. Get a soil test for each plot and them lime and fertilize accordingly.
If you want to plant something that you can turn under as green fertilizer, I've read good things about planting buckwheat in the summer, or a combo or winter rye and clover in the fall.
As far as what to plant, they say variety is the spice of life. If you have several areas that you can plant, try different things. I'd put a lot in clover, but I'd also plant a little chicory, some brassicas in the fall, and soybeans in the spring.
Good luck and keep us posted on your progress. We love pics.