Typhula idahoensis

Typhula idahoensis is a species of fungus in the family Typhulaceae. It is commonly known as the Idaho snow mold or speckled snow mold, and is a significant pathogen of wheat and barley crops, particularly in the Pacific Northwest region of the United States.

Taxonomy

The species was first described scientifically by American mycologist Vernon Ahmadjian in 1953. The genus name Typhula is derived from the Greek typhos, meaning "a kind of cattail", while the species epithet idahoensis refers to the state of Idaho, where the fungus was first identified.

Description

Typhula idahoensis is characterized by its small, cylindrical fruit bodies (or basidiocarps), which are typically 1–2 cm in length and covered in minute, dark brown to black speckles. The spores are elliptical in shape and measure 7–10 µm in length.

Distribution and habitat

The fungus is found primarily in the Pacific Northwest region of the United States, particularly in the states of Idaho, Washington, and Oregon. It is associated with cool, moist conditions and is most commonly found on wheat and barley crops during the winter months, when snow cover provides an ideal environment for its growth and reproduction.

Pathogenicity

Typhula idahoensis is a significant pathogen of wheat and barley crops. The fungus infects the plants during the winter months, causing a disease known as speckled snow mold. Symptoms of infection include yellowing and wilting of the leaves, as well as the development of small, dark brown to black speckles on the plant tissue. In severe cases, the disease can result in significant yield losses.

Management

Management of Typhula idahoensis involves a combination of cultural practices and chemical control. Cultural practices include crop rotation and the use of resistant varieties, while chemical control typically involves the application of fungicides.

See also

• List of barley diseases
• List of wheat diseases

This article is a stub. You can help WikiMD by registering to expand it. Editing is available only to registered and verified users. WikiMD is a comprehensive, free health & wellness encyclopedia.