Key points for prevention and treatment of Agaricus bisporus spider web disease

1. Choose resistant varieties
The selection of disease-resistant Agaricus bisporus varieties can significantly reduce the occurrence of diseases, so that no medicines or less medicines can be used.
2. The mushroom room facilities and layout should be reasonable
The primary fermentation material yard and (second or third) fermentation tunnel cannot be set in the same area as the mushroom house. The soil covering workshop should be far away from the cultivation area. The walls of the mushroom house are smooth and the ground is flat but with a slight slope to facilitate cleaning and prevent water accumulation. The mushroom house should be airtight, and the mushroom house during the cultivation period is under positive pressure. Both the air inlet and the air outlet should be equipped with primary filters (mesh 5 microns). The drainage ditch can directly discharge sewage and can be isolated from the outside world.
3. Do a good job in mushroom house and environmental sanitation and disinfection
Keeping the mushroom house and its surrounding environment clean and hygienic is the prerequisite and basis for disease safety prevention and control. In and around the mushroom house, there must be no water, no fungi, no breeding of pests, and the cultivation waste should be withdrawn away from the mushroom house as fertilizer or buried deep. Thoroughly clean the cultivation site, and it is strictly forbidden to leave residue in the gaps and corners of the bed frame, facility. After the cultivation is completed, the mushroom house is filled with steam to make the air and material temperature reach 70°C, and keep it for 6-12 hours for disinfection.
4. Use clean soil cover
Covering soil is an important substrate for the cultivation of Agaricus bisporus and the main source of transmission of diseases and insect pests. Its key control points are nutrients, cleanliness, water content, water holding capacity and reversibility of water holding capacity. The covering material must be stored in a clean place, protected from dust, sun exposure, and high temperature. The storage of the covering material must be separated from the cultivation field to avoid cross-infection. Water at 60°C for soil mixing is helpful to kill the mycelium of cobweb disease.
5. Strengthen management and reasonably adjust the temperature, humidity and air of the mushroom house
After the soil is covered, the relationship between temperature, humidity and air during vegetative growth and reproductive growth must be handled. It is necessary to prevent the mushroom house from being in a high-humidity environment for a long time, which is an effective means to prevent the occurrence of cobweb disease.
6. Chemical control
In the last water transfer of the covering soil, spray 1 kg of water per gram of Shibaogong 50% wettable powder (diluted 500-600 times) on the covering soil at a dosage of 0.5-0.75 kg/m2. If there is a disease in the mushroom house, first stop using water, reduce the relative humidity of the air in the mushroom house, and carefully cover the diseased mushroom and the infected soil area with a wet paper towel from the edge of the infected area to the inside at the place where the disease occurs, and then cover the paper towel with salt . Adjust the temperature of the mushroom room to below 15°C. After a batch of (tide) mushrooms is over, spray the bed surface of the entire mushroom room with 500 times Shi Baogong solution, with an amount of 0.5 kg/m2.

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