I have planted most all my buckwheat by just broadcasting it on bare ground, or in an existing food plot, and then mowing the plot. I bought a flail mower just for doing this. It blows all the mulch out the back and the roller acts sort of like a cultipacker.

Most of the time I plant peas/beans now, its the same. I broadcast them into my standing cereal crop from fall, and then a mow with the flail mower.

I really do not want to disk a plot unless I just have to, and really would rather subsoil it and then plant it and not disk it. You would be surprised how well that works too for a spring plant.