The message m
from Biller contains these words:

Could be a manganese deficiency if you are lucky. Sorry about the
organic bit, if it is a lack of manganese you'll have to get a
supplement or find a source of crushed roc which contains it.

(That's manganese, *NOT* magnesium!)


thanks - any ideas why this would happen to the autumn fruiting
raspberries, whilst the summer fruiting rows alongside are unaffected?

No, but it may be less tolerant of the deficiency - if indeed it is that.

Just to be sure, google for mosaic virus - but your description didn't
ring alarm bells.

--
Rusty
Open the creaking gate to make a horrid.squeak, then lower the foobar.
http://www.users.zetnet.co.uk/hi-fi/