Some of the leaves on my potatoes are turning yellow, but are healthy. None as far as I can tell have dropped of and the actual plant looks really good apart form the yellowing. The variety is Pentland Javelin.
http://www.allotments4all.co.uk/smf/index.php?action=gallery;sa=view;id=671 (http://www.allotments4all.co.uk/smf/index.php?action=gallery;sa=view;id=671)
Dunno... try a blast of high nitrogen... eg Urea and see if they recover.. :-\
What is bizarre though is the Charlotte in the next row along are fine.
What fertiliser can I use then as I'm fully organic or at least my plot is? ;)
Our charlotte are very slow at coming up this year... very patchy rows at the moment. Urea is acceptable. :-\
my charlotte never even chitted, just sat there doing nothing.