IMHO fish waste does the same thing. I had amazing results when I used to have 20 fish tanks in the house (raised tropical fish).
As for the farmland, I think you could probably start with some cane fruits now. They are a natural species that take over barren/open areas to reclaim it, and you can get a crop from them too that you can just swing by the property in season to pick.
One author said to create natural hedges of local fruit all you need to do is string a wire to serve as a perch for local birds. They'll land and drop seeds of whatever local fruiting plants they've been eating. Depending on what grows near you, you'll likely get cane fruits, black cherries, mulberries, etc.
My favorite cane fruit was the Japanese Wineberries that grew wild in Pennsylvania. I guess they're an invasive species but the birds were happy to plant them and they did the best in our climate and had the best tasting fruit, especially compared to the ones I bought which were either flavorless or bitter.
You might want to check the zoning laws for your property - where I used to live if you had 1 acre you could have poultry (up to 12, no roosters) and if you had 3 acres you could have hoofed animals. A pig or goat would make good use of blemished fruit or trimmings, and if you might want to fit one in you could start to establish forage for them now (sunchokes will multiply over the years, for example).
If you want to seed the land, you can do it conventional style - plow and sow the whole field with a custom seed/blend, or you can just scatter different kinds of seeds on bare patches and see what comes up in addition to the weeds. Weeds are good for reclaiming poorly used land, many have deep taproots that draw up nutrients and leave good amounts of biomass. For our
pond I used
native grasses, clover, some radish seeds, some field peas, and a wildflower mix - some I custom ordered in addition to what came as the mix. Buckwheat may be a good one to add in.