Has anyone else had this problem ? I think it's mice. Out of the whole crop only 2 roots unaffected.... some so badly eaten that there's virtually nothing left undergroud. I've dug them all up ...a very dispiriting sight they make !
Slugs love beetroot so they could be the cause.
YOU ARE VERY LATE HARVESTING
Jo17, I don't think you are very late harvesting - I've harvested some of my first sowing but still have another sowing going strong. Some to eat fresh and some to pickle.
Better check those roots as its been an extremely wet season
This has been my worst year for beetroot and the allotment in general in over 20 years. I think the weather must be to blame as I have done nothing different to other years.
For the very first time I don't feel the crops harvested have been worth the effort.
Well mine are a mixture, Gardener's Delight, San Moranzo and Pink Brandywine.
It has been a bit of a bad year for large slugs this year, and I have found slugs eating my beetroot, and just moved them! However the very best organic solution to the slug problem is to keep ducks! My garden is bereft of slugs now, as I let the ducks roam freely for an hour or two morning and night.