How to control the black spots on the top of Pleurotus ostreatus?

Agaricus bisporus is the white mushroom, mushroom and mushroom that we see more in our life. It is planted all over the world and is especially suitable for stewing soup. When planting agaricus bisporus, it is easy to cause black spots on the top of the mushroom due to improper management, which is generally caused by wet bubble disease or brown spot bacterial infection, so how to prevent it?

1. Prevention and control methods of wet blister disease

Symptoms: If Agaricus bisporus is infected by wet blister disease, then the more common symptoms is that mushrooms produce a group of abnormal tissue. In its early stage of disease, Agaricus bisporus mushroom body above the white fluff shape, accompanied by Agaricus bisporus grow up and slowly appear rotten into brown color. If it is in a very high temperature and relatively high humidity environment, the diseased tissue of Agaricus bisporus will change from amber to dark brown droplets, and then slowly invade into the body of Agaricus bisporus, causing the whole mushroom room to emit a rotten smell. In the late growth of Agaricus bisporus, if infected by the fungus, only in the base of its mushroom stem disease, brown after growing white fluff in the hyphae, the entire cap will grow brown spots.

Prevention and control methods: first, Agaricus bisporus room to do a good job disinfection measures. Because mushrooms are easily infected with this type of disease during cultivation, they must be cleaned and disinfected on the ground, walls, shelves, etc. where spores are hidden. When new materials enter the mushroom room, humidity and temperature are more appropriate, then new pollution sources will appear. Therefore, it is necessary to clean up the fertilizer in the mushroom room, wash the mushroom room, fumigate, ventilate, etc.

Second, this bacteria is likely to come from the soil, so we must pay attention to the operation steps when taking soil, must be pollution-free.

Third, usually to maintain the double spore mushroom room ventilation. Reducing the temperature difference between day and night, properly reducing humidity and temperature, can effectively prevent the occurrence of such diseases.

II. Bacterial spot disease

Bacterial spot disease is a frequent disease in mushroom cultivation process, because in high humidity and high temperature environment, it will accelerate the spread of this disease, and it has a greater threat to the quality and yield of Agaricus bisporus.

Agaricus bisporus spot disease is a kind of existence in the air, soil, culture, water caused by bacteria, so once this kind of disease occurs, then, in the Agaricus bisporus cover above will appear dark brown spots. In the early stages of the disease is relatively light color, with the passage of time, slowly the disease spots will become dark brown. If the situation is serious, it will crack at the place where the spot symptoms occur, so that the agaricus will appear deformed.

Control methods: First, the humidity in the mushroom room should be appropriately reduced to increase ventilation.

Second, if the infection of the pathogen occurs, it is necessary to immediately prescribe the right medicine to control the disease.

Third, clean and disinfect the mushroom room.