[fatcat1955]

Evening all, 80% of my spuds had matchstick size diameter holes in them. I know the usual suspects are wireworms but this was on ground that has been well cultivated for 30 years by the former tenant of my plot. I thought wireworms lived on grassland, so could any other pest have caused these holes.

[Yorkie]

There are underground slugs which may be responsible?

[Aunt Sally]

Little black ones called Keel slugs -  Yyyyyuk

[fatcat1955]

Had the odd slug damage , but these holes are too small.