25 yrs since iv'e grown swedes put in stubble turnips since then ( easier to grow ) with swede used to apply lots of FYM and then plough deep then ridge up and sow in ridges (turnip flea beetle were always a problem and you often had to re sow ) DartmoorLiz best to either split the swede into quarters using a spade or better still buy an old root chopper and feed in troughs , 50 sheep will eat lots , remember that if their teeth are slack then they don't do well on only swedes . farmershort they just eat them in the ground right down to the soil and as above young or old with slack teeth don't do well