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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

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