Here is info from Dbltree's Corner on food plot rotation:
Dbltree seed mix and rotation
Plant ALL in one plot in strips or blocks
Alice, Kopu II, Durana (or comparable) white clover 10% of plot, sow at 6#'s per acre with the rye combination in the fall or in the spring with oats and berseem clover. Correct Ph and P&K with soil tests
Brassicas in 45% of plot
Purple Top Turnips 3#
Dwarf Essex Rape 2#
GroundHog Forage radish 5#
Plant in mid to late July in most Midwest states, or 60-90 days before your first killing frost, Use 200#'s of 46-0-0 urea and 400#'s of 6-28-28 per acre. Follow the dead brassicas with oats and berseem or crimson clover in mid spring at 60#'s oats and 12-15#'s berseem clover and/or crimson and/or 50#'s of chickling vetch)
Cereal Grain combo in 45% of plot...we use 50# each rye, oats and peas along with radish and clover seed all planted in half of each feeding area
Winter rye 50-80#'s per acre (56#'s = a bushel)
Spring oats 50-120#'s per acre (32#'s = a bushel)
Frostmaster Winter Peas or 4010/6040 Forage peas 20-80#'s per acre
Red Clover 8-12#'s per acre or white clover at 6#'s per acre (or 20-40 pounds hairy vetch and 20-30#'s crimson clover on sandy soils)
Groundhog Forage Radish 5#'s per acre
Plant in late August to early September, if following well fertilized brassicas use 100 - 200#'s of urea, if starting a new plot add 400#'s of 6-28-28 but for best results soil test and add only what is necessary.
Rotate the brassicas and rye combo each year
