White rot

White rot or mouldy nose is a serious disease and is always worst in hot, dry summers.

Identifying Features
Foliage turns yellow and wilts. A fluffy white mould appears on the base of the bulbs and round black bodies appear in this fungus.

Treatment
None. Lift and burn affected plants.

Prevention
There is no chemical treatment you can use. Do not grow alliums on infected land for at least 8 years.