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ASTA Pest Database for Seeds (PeDS)
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Plasmopara halstedii
(downy mildew of sunflower )
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Scientific name
Plasmopara halstedii
Common Name
downy mildew of sunflower
Other Names
Plasmopara helianthi, Plasmopara helianthi f. sp. helianthi
Distribution
Worldwide
US Distribution
Widespread
Data Reviewed
2021-04-29 16:53:47
Type
fungus
Countries Listing Pest
Korea
Host Range
sunflower, other Asteraceare species.
Acronym
PLASHA
Comments
This pathogen has been reported in Korea
1 Known Hosts
Helianthus annuus (sunflower)
Scientific name
Helianthus annuus
Crop
sunflower
Seed a Pathway
Yes
Reference
PLASHA-2,PLASHA-3,PLASHA-4
Comments:
Seed as a pathway has been established and accepted.
Seed test
Yes
Detection type
Blotter incubation, ELISA, PCR
Reccomended Health Test
Test Reference
PLASHA-1
Risk Type
Fungicidal seed treatments.
Risk Comments
Resistant varieties for various races exist. Seed treatments with meta-laxyl and mefenoxam (FRAC 4 fungicides) have been effective.
Risk Reference
PLASHA-1,PLASHA-2
Reference Index
PLASHA-2
R. M. Harveson, S. G. Markell, C. C. Block, and T. J. Gulya. 2016. Compendium of Sunflower Diseases and Pests. APS Press, St. Paul, MN, USA
PLASHA-3
Doken MT, 1989. Plasmopara halstedii (Farl.) Berl. et de Toni in sunflower seeds and the role of infected seeds in producing plants with systemic symptoms. Journal of Phytopathology, 124:23-26
PLASHA-4
Cohen Y; Sackson WE, 1974. Seed infection and latent infection of sunflowers by Plasmopara halstedii. Canadian Journal of Botany, 52:231-238.
PLASHA-1
Plasmopara halstedi. In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
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