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Melampsora salicina

Melampsora salicina

Description

The intermediate host of this rust is larrch, on which spermogonia and eciá (deposits of spring spores) occur. Uredia (deposits of summer spores) and bodies (deposits of winter spores) are present on the underside of willow leaves since mid-June. Due to their occurrence, they reduce the assimilation area on both larch and willows. In case of severe infection, the leaves are covered with a layer of yellow to orange powder, the leaves are curly and dry. Significant economic damage is caused in plantations, where this fungus can reduce biomass production.

Symptom

Orange, rusty bordered patches on the underside of leaves.

Tree Species: Larch, Willow

Part of a plant- attacked: Leaf / Needle

Pest significance: Harmful

Pest Category: Fungi

Invasive Species: No

Present in EU: Yes

Seasonal frequency of occurrence

Seasonal frequency of occurrence