Clover does not do well in all parts of the US.In much of OK itdoes not do well. Fora spring-summer food plot in the south you cannot beat milo and peas.The peas climb the milo stalks. As soon as the milo heads mature the deer hit it.When it cools down a little there is often a second growth of milo that the deer love to eat.
Soybeans also work

eer love to eat green soybean plants.
For a fall-winter feed plot oats are hard to beat in the south.Visited one of our places last evening. The deer were ignoring the neighbors wheat fields and had piled into our oats patches. The deer are there because there are very few oak trees in that area.Oats may freeze outfarther north.