Comprehensive prevention measures of Agaricus bisporus "Olive green mold"

First, the symptoms and causes. The disease usually occurs within 1-2 weeks after sowing. After the disease occurs, there is a thick musty smell in the mushroom house. Initially, white hyphae are formed on the surface and material of the culture material, and the aerial hyphae are perpendicular to the surface. Up, about 5 centimeters long. Thereafter, the mycelium of the olive green mold is converted into olive green or brown size such as rapeseed ascospore, which is produced on the culture material. The ascospore cotton is soft and has no hardness, and the surface is uneven, and its symptoms are different from that of the henna. The culture material at the place where the disease occurs is black, sticky and has a very mild moldy smell, and the growth of mushroom hyphae in the affected part is severely inhibited. The mushroom house where the disease usually occurs is accompanied by more ghost parasites and brown gypsum mold. Reason analysis; the formula of the culture material is unreasonable; the fermentation process is not scientific; the planting season is not properly arranged. Linyi Fertilizer Network Copyright

Linyi Fertilizer Network Copyright

Second, comprehensive prevention measures. The pathogen of olive green mold is mainly derived from the culture material of the mushroom. The high residual ammonia content, high humidity, poor permeability and high ambient temperature are the main factors inducing the occurrence of the disease. Once the disease has occurred, there are currently no good drugs to control. Therefore, it is necessary to formulate a comprehensive prevention and treatment strategy for the disease around the entire preparation process of the mushroom culture material. Linyi Fertilizer Network Copyright

Linyi Fertilizer Network Copyright

1. Use fresh and mold-free materials as culture materials, reasonably prepare the carbon/nitrogen ratio of the culture materials, reduce the input of chemical fertilizers, and increase the amount of bio-organic compound fertilizer. Linyi Fertilizer Network Copyright

Linyi Fertilizer Network Copyright

2. According to the local climatic conditions, scientifically and rationally arrange the sowing date and the composting period of the culture materials, and let the culture materials absorb enough water before starting the pile. Linyi Fertilizer Network Copyright

Linyi Fertilizer Network Copyright

3. Improve the fermentation process. Improve the quality of the pre-fermentation pile-up and sowing pile; the post-fermentation pasteurization temperature should be controlled as much as possible between 58-62 °C, try not to exceed 65 °C, and the time should not be too long, between 8-10 hours. Suitable; the temperature in the post-fermentation culture stage should not be drastically large, the temperature should be controlled between 46-48 °C, the time should be sufficient, and the ventilation and oxygen supply should be emphasized to convert the free ammonia into the bacterial protein. Linyi Fertilizer Network Copyright

Linyi Fertilizer Network Copyright

4. If the water content of the culture material is high and the ammonia smell is heavy after the end of fermentation, the following methods may be used as appropriate. First, the shed will be re-cultivated until it is qualified; the second is to increase the intensity of ventilation and overturning, so that the moisture and ammonia smell can be dissipated. When the material is dry, formaldehyde or superphosphate can be used to fix ammonia. Linyi Fertilizer Network Copyright

Linyi Fertilizer Network Copyright

5. When olive green mold occurs, it should be treated according to the severity of the disease. If a small amount of sporadic occurs, it can be manually removed; if a large area occurs above the whole bed, the bed material should be re-pasteurized once. Linyi Fertilizer Network Copyright

share to: