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2. Rust spot disease is a bacterial disease caused by Pseudomonas spp.. It is mainly impregnated with mushroom mushroom caps. The initial stage is needle-like, and then expands to the size of sesame seeds. Although the edges are not neat, the lesions can be connected into irregular large rust spots. . Control methods: Do not sprinkle the water directly to the fruiting body when spraying the mushroom house. When the water is sprayed, it should be ventilated immediately. The relative humidity of the indoor air should not exceed 95% for a long time. The surface film of the bacteria bag must be dried after the fruit body is dried. In the early stage of disease, 50% of carbendazim 800 times, or 100-200 IU of agricultural streptomycin can be sprayed.
Mushroom spot disease prevention and control
First, black spot is a bacterial disease caused by Pseudomonas. After the onset of disease, the mushroom mushroom caps appear oval brown or dark brown spots, the initial needle-like, enlarged diameter of 2 to 4 mm, neat edges, and sometimes cracked cap. Control methods: control the temperature and humidity. When watering the mushroom house, do not sprinkle water directly on the fruit body of the mushroom and do not spray it with cold water. The humidity in the mushroom house should not exceed 90% for a long time. It depends on weather changes. The sunny days should be light, hard and fine, and the rainy days should be less or not. Each time after watering should be enhanced ventilation, and then cover the film. The indoor temperature during the mushrooming period should be adjusted to about 17°C. Mushrooms should be removed in time after onset and sprayed with 100 to 200 international units of streptomycin for agriculture or 600 times for bleaching powder for prevention and treatment.