jock,
I posted earlier about my probs. with 'white onion rot'.
Lost 50% of my current crop & very concerned for the future with this devestating disease.
Some say - use Jay's fluid, an interesting post suggested using an onion/water mix poured onto the affected area to 'fool' the spores of the rot fungus into 'thinking' that an allium is present.
The spores grow & die when no host is present.
I'll try both! Can't wait 25 years for the fungus to pass away!!!