Flammulina velutipes soft rot

If you encounter soft rot of Flammulina velutipes during the cultivation of Flammulina velutipes, how should you prevent and control it? Today I will tell you some tips:

Symptoms of the disease are:

In the early stage of infection, white mycelium appears on the surface of the culture medium of the fungus bag or fungus bed. When the temperature and humidity conditions are suitable, the expansion speed is very fast. Soon, the white flocculent mycelium can cover the entire surface of the culture medium, that is, the mycelium, conidiophores and conidia of the pathogen. After the young mushroom buds are surrounded and infected by the pathogen, they cannot continue to grow and die in a light brown color. The growing fruiting bodies cause the base of the stipe to rot in a light brown water-soaked state, and the cotton-like aerial mycelium of the pathogen can expand upward to the cap. After the base of the stipe rots, the diseased fruiting bodies fall over, covered with white mycelium, and completely lose their economic value. If not handled in time, fruiting bodies can no longer be formed, and the culture medium will deteriorate in a wet rot state.

The pathogen of soft rot can usually live in soil rich in organic matter and on dead organic matter. When using raw material beds or boxes to grow Flammulina velutipes, the disease is very likely to occur if unclean water is used to mix the materials. When using cooked material bags or bottles to grow, the culture medium has been sterilized, and the first batch of mushrooms rarely get sick. The second and third batches of mushrooms are due to water replenishment and moisture spraying in the mushroom house or conidia floating in the air settling on the culture medium. Under conditions of high temperature, excessive humidity and poor ventilation, the disease is conducive to its occurrence. Once the disease occurs, it spreads very quickly.

The pathogen infects the base of Flammulina velutipes, causing the stems to turn brown and rot. It then spreads upwards to cover the entire fruiting body, and the affected area becomes waterlogged and gradually turns brown and soft. The pathogen also survives in the soil for a long time, and generally enters the mushroom shed through air currents, human bodies, tools, and insects. It can cause harm at around 10°C, especially in early spring when the temperature gradually rises and the relative air quality is poor. The disease occurs very quickly and the harm becomes more severe.

Flammulina velutipes soft rot

Prevention and treatment methods:

1: Maintain good environmental hygiene inside and outside the mushroom house and use clean water that is not contaminated by pathogens for mixing feed and mushroom house management;

2: Keep the temperature of the mushroom house as low as possible and provide proper ventilation to prevent water accumulation on the surface of the culture medium;

3: Once the disease occurs, it must be removed in time and sprayed with 1:200 times "Shi Er Kang" solution, which can effectively control the spread of soft rot; when using raw material cultivation, add 600 ml (3 bottles) of "Shi Er Kang" per ton of dry material.