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Uncinula bicornis

Powdery mildew of field maple

Description

Uncinula bicornis is a fungus that commonly affects Acer campestre, also known as the field maple. It causes powdery mildew on the leaves, which appears as a white or grayish powdery growth on the surface of the leaves. The fungus can also affect the twigs and stems of the plant, causing them to become distorted and stunted. Control measures for this fungus include such practices as pruning infected plant parts, improving air circulation, and reducing plant stress, as well as the use of fungicides in case of severe attack.

Symptom

White or grayish powdery growth on the surface of the leaves.

Tree Species: Maple, Box elder

Part of a plant- attacked: Leaf / Needle

Pest significance: Harmful

Pest Category: Fungi

Invasive Species: No

Present in EU: Yes

Last observations

There are a total of 1 observations of the species in the system