"Ophelia" wrote

What is spraing, please?

The symptoms are brown arcs (like the rings of a tree) within the potato
that only show when the tuber is cut. Sometimes the arc is woody too. Not
nice if you are looking forward to a baked potato only to find spraing when
you cut into it.
Causes by a virus, usually the Tobacco Rattle Virus, transmitted by
nenatodes in the soil.

--
Regards
Bob Hobden
just W. of London