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Botryotinia porri (botrytis rot of garlic )
Botryotinia porri
botrytis rot of garlic
Botrytis porri, Sclerotinia porri
China, Iran, Canada, Chile, Venezuela, Finland, Germany, Hungary, Norway, United Kingdom, Australia, New Zealand
CA, OR, NV, WA
2021-10-26
fungus
Brazil, Mexico
onion, leek, garlic
BOTTPO
Botryotinia porri primarily spread by planting material (bulbs of garlic, possibly young seedlings of leek). Internationally, it could also be introduced into new areas with garlic bulbs or leeks for consumption, although it is relatively unlikely that diseased material should enter international trade because of its obvious poor quality.
1 Known Hosts
Allium cepa
onion
No
BOTTPO-2, BOTTPO-3, BOTTPO-4
Pathway not proven. Only one report of seed being a pathway for B. porri in onion (BOTTPO-2). Botryotinia porri is a pathogen of garlic and leek and is less important on onion.
Yes
Blotter incubation
This test has not been validated or standardized.
BOTTPO-2
Good hygiene will prevent the persistence of sclerotia or infected crop debris in the soil. Agricultural practices that would create cool moist conditions in the upper layers of the soil should be avoided, in particular in relation to irrigation.
BOTTPO-2
du Toit LJ, Derie ML, Hsiang T, Pelter GQ, 2002. Botrytis porri in onion seed crops and onion seed. Plant Disease, 86:1178.
BOTTPO-3
du Toit LJ, Derie ML, and Pelter, GQ 2004, Prevalence of Botrytis spp. in Onion Seed Crops in the Columbia Basin of Washington.Plant Disease 88: 1061-1068
BOTTPO-4
International Seed Federation Regulated Pest List Database. www.pestlist.worldseed.org. Nyon, switzerland
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