Folks like green cover make something to help clay soils in particular. Something deep rooted. PErhaps without daikon radish. MY wife hates the smell when it rots.
I alternate what years I harvest at home. Im due for a break here. So, less attractive forage options would be ok. Also adding more size to the plot this fall.
There are a LOT of recommended cover crop/food plot seeds that produce good roots that don't grow very well on my greasy (this time of year) clayish dirt. Among them are radishes, peas, buckwheat, oats, most brassicas, most chicories, blackoil sunflowers, sunn hemp, and more. Read the descriptions - most seeds prefer "well drained soil", something in short supply at my place.
Winners on clayish dirt include plantain, wheat, cereal rye, triticale, most white clovers, medium red clover, Japanese millet, off the top of my head.
Many of the seeds preferring well-drained soil can grow pretty well on clay if you happen to get goldilocks growing conditions after planting (not to dry, not too wet, not too warm, not too cold,....just right).
If you're able to find someone to spread gypsum on your ground, that would be outstanding. I eventually gave up on it.
