MySheen

Disease of Ganoderma lucidum: Cercospora

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, DactyliumdendroidesFries belongs to the subphylum Trichoderma, Trichospora, Trichospora, Trichosporaceae, Trichospora. 1. The morphological characteristics of hyphae are white and cotton floc. The conidiophores are slender and sparse, and the whorl branches are arranged radially. The conidia are oblong, colorless, born at the top of the peduncle, solitary or in small clusters, mostly 4 cells. two。 The regularity of the disease (1) the route of transmission refers to the distribution of sporomycetes living in the soil and rich in organic matter.

DactyliumdendroidesFries belongs to the subphylum Trichoderma, Trichospora, Trichospora, Trichosporaceae, Trichospora.

1. The morphological characteristics of hyphae are white and cotton floc. The conidiophores are slender and sparse, and the whorl branches are arranged radially. The conidia are oblong, colorless, born at the top of the peduncle, solitary or in small clusters, mostly 4 cells.

two。 Morbidity regularity

The main results are as follows: (1) the route of transmission means that Sporomyces lives in the soil, and there are many soils rich in organic matter. When Ganoderma lucidum was cultivated with soil cover, the soil was not disinfected, so it was easy to spread the pathogen.

(2) High temperature, high humidity, lack of ventilation and thick soil cover are the main conditions for the occurrence of the disease.

3. The bacteria appeared white cotton-like hyphae on the surface of the covered soil, and then rapidly expanded to form a layer of white bacteria with a thickness of 1-2 cm, which covered the bed. The injured Ganoderma lucidum stalk was invaded by the slender hyphae, which made the base of the stalk rot like water stain, forming the symptom of yellowish brown or light brown soft rot, which inhibited the normal development of fruiting body.

4. Prevention and cure method

(1) fumigation with 5% formaldehyde solution before covering soil.

(2) the mixture should be used in clean running water or tap water.

(3) at the initial stage of infection, the bacteria can be partially removed by sprinkling lime powder or spraying 2% formaldehyde solution, enhance ventilation and stop water for 1-2 days.

(4) without harming the growth of young Ganoderma lucidum, remove the covered soil of miscellaneous bacteria in time, and re-cover 1-2 cm of burning soil or disinfect treated soil.

 
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