As mentioned above, I would strongly recommend doing a soil sample.
As far as the plot, how big of an area is it?
One thing I would suggest is perhaps spreading brassica seed (rape, ptt, daikon, kale, radish 7top turnips), especially with all the farmland that it appears you have around it.
That stuff being green into November should be a big draw to the deer, and set you up nicely for the rut and even opening weekend of gun season.
I ended up doing a food plot for the first time this year, I planted about 1 acre of corn and soybeans. I just broadcasted the soybeans between 2 20 rows of corn, then in late July early August I plan to go back and plant about a 1/4 acre in brassica and about 3/4 of an acre in a clover (white and red)/rye/oats/winter peas and radish mix, mostly the rye oats and winter peas are mostly a cover crop as I'm trying to establish a nice little plot for clover for spring for the deer to have something that comes up early, as well as turkeys.
I put down a bunch of rye in the spot I plan to come back and spray and put in the clover, and I've seen deer already browsing that field pretty hard.
Rye is a pretty cheap solution as well, so I wouldn't overlook planting that, plus it grows on just about anything. The brassicas don't tolerate a lower ph, but if your clover stand has been nice the last couple years, then you should be fine with the brassica, you'll just need to put out some nitrogen.
It's good for the soul when there's not a soul in sight.