First UK finding of Plasmopara halstedii

 

revision

Date de publication

jeu, 30 Jui 2022, 14:59

Dernière mise à jour effectuée le

juin 30, 2022, 2:59 après-midi

Report Number

GBR-23/2

Pays

United Kingdom

Identité de l'organisme nuisible

Plasmopara halstedii - (PLASHA)

Situation du signalement

Final

Hôtes

Helianthus annuus (Sunflowers)

Pest Status (old values from ISPM 8 -1998 )

• Transient: actionable, under eradication

Pest Status (ISPM 8 - 2021)

• Present: transient

Distribution géographique

One finding in Lincolnshire

Résumé

Outdoor plot of cv Galilee Adami where 120,000 seeds were sown on a plot of 5 ha. Germination was stated to be 40%. Some symptomless flowers were sold to retail before infection was observed and confirmed by laboratory diagnosis. Infection was also seen in some trial varieties.

The infested plot was destroyed by ploughing in and planting of sunflowers prohibited for 10 years due to the long term survival of the pathogen in the soil.

The seed origin and other crops grown from the same seed stock are being followed up to determine the origin of the infection and if any further crops are infected.

Danger

First UK finding, under eradication so risk of spread should be minimal

Fichiers de rapports

Site web

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