My plots are planted in three widely dispersed properties in OK. We do two plantings per year, iron clay peas in the spring and oats in late August to November-December. Each year we plant 12-15 acres of oats: Climate permitting 18-20 acres of oats will be planted this year. We plant plain old horse feed oats or Chilocco oats: They work very well for us.
i am not a farmer nor do i play one on TV. We never use glycophosphate or Round Up: We seldom have a weed problem. One property was limed a few years ago. None of the plots have been PH tested. We grow some outstanding plots when there is adquate rainfall.
Our oats are planted very thick right after a good rain, if possible. The old Okies call it "mudding in oats". Planting in wet soil gives the oats a very good start; the deer will be eating them 15 days to three weeks after planting. When oats are planted in ground where iron clay peas matured no fertilizer is used.
Good luck with your food plots.