Onion neck rot

First described in the USA in 1917, neck rot can be a major source of losses in stored bulb onions in the UK. The extent of losses is variable. Losses of over 50% were reported in the late 60s and early 70s and, more recently, losses of up to 40% have been reported in individual crops. This factsheet draws together results from several AHDB Horticulture projects, together with historical information from the UK and the worldwide scientific literature.

This information was last updated in 2016.