Typhula incarnata

Typhula incarnata

Typhula incarnata is a species of fungus in the family Typhulaceae. It is known for causing a plant disease commonly referred to as gray snow mold or speckled snow mold, which primarily affects turfgrass and other grasses under snow cover.

Description

Typhula incarnata produces small, club-shaped fruiting bodies known as clavulae. These structures are typically pinkish to flesh-colored, which is reflected in the species name "incarnata," meaning "flesh-colored." The fungus forms sclerotia, which are hard, resistant structures that allow it to survive unfavorable conditions.

Life Cycle

The life cycle of Typhula incarnata involves the production of sclerotia in the fall, which remain dormant under snow cover. In the spring, as the snow melts, the sclerotia germinate to produce the fruiting bodies. These fruiting bodies release spores that can infect new host plants.

Pathology

Typhula incarnata is a significant pathogen in regions with prolonged snow cover. The disease manifests as patches of dead grass that appear as the snow melts. The fungus thrives in cold, wet conditions and can cause extensive damage to lawns, golf courses, and other grassy areas.

Management

Management of gray snow mold involves cultural practices such as reducing thatch, improving drainage, and avoiding excessive nitrogen fertilization in the fall. Fungicides may also be applied preventatively in areas with a history of severe outbreaks.

Related Pages

• Snow mold
• Turfgrass diseases

Clavules of Typhula incarnata

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Typhula_incarnata

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