If anyone wants to treat next years onion patch for white rot :-
Equimins Garlic Powder 3Kg tub for £11.50, Delivery free.
from http://www.pet-supermarket.co.uk/
Other sizes available.
It's a bit late for next years, but getting it in to use next year on the year after nexts.... within a few pence the 3kg adn 5kg cost the same per kilo, application rate is supposed to be around 80g per sq metre, but this year I tried about 100g, that way 5kg did around a third of one of my half-plots.... fingers crossed....