First UK finding of Plasmopara halstedii

 

old revision

Publication Date

Thu, 30 Jun 2022, 14:59

Last Updated

June 30, 2022, 2:59 p.m.

Report Number

GBR-23/2

Country

United Kingdom

Pest Id

Plasmopara halstedii - (PLASHA)

Report Status

Final

Hosts

Helianthus annuus (Sunflowers)

Pest Status (old values from ISPM 8 -1998 )

• Transient: actionable, under eradication

Pest Status (ISPM 8 - 2021)

• Present: transient

Geographical Distribution

One finding in Lincolnshire

Summary

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

Report files

Website

Issue keywords

Commodity keywords