First UK finding of Plasmopara halstedii

 

Revisione

Fecha de publicación

Jue, 30 Jun 2022, 14:59

Última actualización

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

Número del informe

GBR-23/2

País

United Kingdom

Plaga identificada

Plasmopara halstedii - (PLASHA)

Estado del informe

Final

Hospederos

Helianthus annuus (Sunflowers)

Pest Status (old values from ISPM 8 -1998 )

• Transient: actionable, under eradication

Pest Status (ISPM 8 - 2021)

• Present: transient

Distribución geográfica

One finding in Lincolnshire

Resumen

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.

Peligro

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

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