Manure and Root Crops, and Rotation

As far as I know, Danny, and no doubt there are far more knowledgeable out there than I,  onions like a rich soil and are quite hungry, so would be more than happy in manure, whereas the roots like a bed fed the previous year.

Thanks JJB, the onion one sounded a little odd too me

My advice might be totally wrong for no dig beds though, never tried no dig myself.  Vinny's the expert there I believe.