Valsa malicola detected in Victoria, Australia

 

Revisione

Fecha de publicación

Vie, 23 Jun 2023, 06:11

Última actualización

Jun. 23, 2023, 6:11 a.m.

Número del informe

AUS-44/4

País

Australia

Plaga identificada

Valsa malicola - (VALSMC)

Estado del informe

Final

Hospederos

Malus domestica cv Granny Smith

Pest Status (old values from ISPM 8 -1998 )

• Present: at low prevalence
• Unknown

Pest Status (ISPM 8 - 2021)

• Present: at low prevalence

Distribución geográfica

Yarra Valley, Victoria , Australia Possibly common in Australia as all Valsa/Cytospora species are difficult or impossible to identify based on morphology. Valsa ambiens is common on apple in Australia and some of these records could be V. malicola.

Resumen

V. malicola is associated with dieback of Malus twigs, especially those weakened by other factors, for example when frozen, burnt, wounded, injured by insects or attacked by other pathogens.

It is found on dead or dying twigs of Maloideae (Cotoneaster, Crataegus, Cydonia, Malus, Pyracantha, Pyrus, Rosa) but only infrequently on other members of the Rosaceae (e.g. Prunus) when it is present mainly as the anamorph. Both conidia and ascospores are air-borne, especially under humid conditions. Brightly coloured droplets or tendrils of conidia are often exuded from conidiomata after rain.

It is found in Asia: Armenia, Azerbaijan, China, Republic of Georgia, Kazakhstan, Russia. Europe: Austria, Czech Republic, Germany, Italy, Latvia, Lithuania, Portugal, Rumania, Russia, Slovakia, Sweden, Switzerland, UK, Ukraine. North America.

Peligro

Valsa malicola was detected in an apple orchard on a mature tree during a survey. The fungus was affecting twigs and possibly branches. It is a weak opportunistic pathogen that usually has no effect on fruit production.

Contacto para obtener más información

Australian Chief Plant Protection Officer Australian Government Department of Agriculture, GPO Box 858 Canberra ACT 2601 Australia [email protected]

Archivos de informes

Sitio web

Palabras claves del tema

Pest status:Present/Presence

Palabras clave del producto