Stromatinia cepivora

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onions infected by Stromatinia cepivora (click on image to enlarge it)
Source: IPM Images

Stromatinia cepivora (Berk.) Whetzel 1945 - (white rot of onion)

This fungus is widely distributed and causes white rot on onions, garlic and other Allium species. The sclerotia can survive in the soil for more than 20 years and will germinate when their mycelia are re-activated through exudates by Allium roots. Plants typically become infected when bulb formation begins and develop a soft rot of bulbs and roots. Older leaves wilt.

Synonyms:
Sclerotium cepivorum

Vernacular names
• Deutsch: Weißfäule der Zwiebel
• English: white rot of onion
onion white rot
• Español: pudrición blanca de la cebolla
• Français: pourriture blanche de l'oignon


For details see the respective page in BugwoodWiki.