Wire worm

From what I've read, wireworm is very difficult to eliminate. They'd need about 5 years to disappear from soil but even that is no guarantee:
http://www.teagasc.ie/publications/2004/20040226/paper1.asp

The only good safe way is to flood the ground for 2 solid weeks then let it dry out for 2 weeks. But I suspect that's very difficult to do for most folk.

Instead, why not try growing your spuds in containers? A lot of folk are having very good success using this method, particularly scab-free tatties. Wireworms wouldn't exist in potting soil mix so you'd be free of them and could let your land have them die off naturally. I've seen some potato barrels online as well as plastic trugs (make holes in the bottom for drainage). You'd need to change the pot soil every year but that small price would be worth having lots of clean tatties.

There is a thread in "The Show Bench" about growing spuds in containers.  I believe that growing them this way also protects from soil borne pests.  Well at least my uncle said it did.

http://chat.allotment-garden.org/index.php?topic=63808.msg736447#new

Unfortunately it's not just spuds that wireworm attack. A few years ago my onions were decimated with hundreds / thousands of the devils. Wireworm do gradually disapear as the ground is cultivated year on year especially if you hand pick them. Alternatively if you have a suitable water scource flood the ground as Trillium suggest. Could you loan some chickens for a week or two as they will reduce the numbers of wireworms dramatically?

just been reading you comments on wire worm, very helpful new to this site  thanks.