What are you looking to improve? Rye is easier to grow and very tolerant of planting depth. You could just increase your planting depth. Whats your spacing. IF your soil is easy to go into, you could turn up your press wheel tension. Also, post plant cultipack is an option too. Sometimes light tillage where your tractor does alot of turns is a good practice.
Farmers have for many years boradcasted equal parts oats and potash.
Making an ATV rye n clover drill is still on my list. I was planing on adding a fertilizer box. Was going to make a single disc opener, drop seed, then close it with a 2nd disc then light press wheel afterwards. Likely put the fertilizer right after the closing disc. Might mix clover seed with fertilizer, but I do have a small seed box from a john deere drill already. I think mixing large seed and fertilizer is going to beat up the seed too much mechanically, not so much chemically.