Deformed spuds - Help !

[moudie]

Hi - I planted Desiree.Maris Piper.Wilja on a new plot this year and I suspect I have got powdery scab.
the crop was poor and very deformed - see pic
What can I do next year - is there a resistant variety.Heeeelp!

[moudie]

[moudie]

I've got a gruesome pic - how do I attach  it ?