What is the Ganoderma disease pathogen Peziza badia?

Peziza badia Pers. belongs to the subdivision Ascomycotina, class Discomycetes, order Pezizales, family Pezizaceae, genus Peziza.

1. Morphological characteristics The apothecium is bowl-shaped, sessile, dark brown, 3-6 cm wide. The upper part of the ascus is cylindrical, gradually tapering downward into a stalk. The spores are arranged in a single row in the upper part of the ascus, elliptical, with obvious small protrusions. The paraphyses are pale yellow.

2. Disease occurrence pattern

(1) Transmission route The spores are spread by airflow and wind, and can also be introduced with the culture substrate and casing soil to cause the disease.

(2) Occurrence conditions It is prone to occur under conditions such as rich organic matter, high humidity in the cultivation site, and poor ventilation.

3. Damage symptoms On the culture substrate and soil of the bed and furrow, nearly round fruiting bodies with a slightly flesh-colored tint grow one by one, ranging in size from a mung bean to a soybean. After growing up, the top opens to form a cup-shaped or bowl-shaped fruiting body, nearly sessile, and in the later stage the edges crack in a petal-like shape and release ascospores. When harmed by Peziza badia, the substrate loses nutrients and water, affecting the growth of Ganoderma mycelium and nutrient accumulation, thereby causing reduced yield.

4. Control methods

(1) Do a good job of cleaning and hygiene in the site.

(2) The casing soil should be disinfected.

(3) When the pathogen fruiting bodies are found, they should be removed promptly and handled in a centralized manner to prevent further spread.