EPPO Global Database

Xanthomonas arboricola pv. juglandis(XANTJU)

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Wood cankers produced by Xanthomonas arboricola pv juglandis on infected walnut trees

Courtesy: Riccardo Bugiani (Plant protection Service. Emilia-Romagna Region) Italy

Severe attack of walnut blight on fruit

Courtesy: Riccardo Bugiani (Plant protection Service. Emilia-Romagna Region) Italy

Small necrotis spots caused by Xanthomonas arboricola pv. juglandis observed on leaves

Courtesy: Riccardo Bugiani (Plant protection Service. Emilia-Romagna Region) Italy

Young walnut fruits with necrotic bacterial spots

Courtesy: Riccardo Bugiani

Early necrotic lesions on young fruit

Courtesy: Riccardo Bugiani (Plant protection Service. Emilia-Romagna Region) Italy

Initial symptoms of walnut blight can be most easily observed by looking at the leaves against the light

Courtesy: Riccardo Bugiani (Plant protection Service. Emilia-Romagna Region) Italy

Young fruits severely affected by Xanthomonas arboricola pv. juglandis

Courtesy: Riccardo Bugiani (Plant protection Service. Emilia-Romagna Region) Italy