Symptoms in the strainer bottle or after the sowing of the bacteria and mushrooming are not easy to pick the net roots, resulting in the spread of green colonies, not only with the mushroom for nutrition, and the secretion of toxins also affect the mushroom mycelium colonization and Solid formation. Mushroom rearing is very vulnerable in production; when the culture block becomes infected, it quickly grows into green colonies and spreads quickly, resulting in poor growth or death of the mushroom mycelia or fruiting bodies. Almost all strains of edible fungi are easily contaminated by green mold, especially around wet tampons.
Common pathogens are Trichoderma varide Pers.ex Fr., called Trichoderma viride; Trichoderma koningii Oudem., Trichoderma koningii; and T. polysporum, Trichoderma spp., which are all fungi of the subphylum Aspergillus. Green conidia, containing 4-12 spores, conidia are colorless, spherical or ovoid, size 2.8--4.5*2.2---3.9 microns.
Transmission routes and disease conditions The spores of the disease are transmitted by the air flow. During the inoculation, the disinfection is not strict or the tampon is wet and the production environment is not clean. The spores in the air invade the machine and the root of the mushroom is damaged when the mycelium is healed and colonized or mushrooms are collected during production. Also susceptible to infection.
The strain is suitable for breeding under high temperature, high humidity, and acid conditions in the culture medium. The optimum growth temperature is 250C. Relative humidity of 95% or more, PH3. 5-6.
Prevention methods (1) Prevent excessive formaldehyde in the inoculation box or seed chamber during production to prevent formaldehyde from becoming formic acid and form an acidic environment. Around the cultivating room should be promoted lime powder, found that there is a green mold contaminated strains, should be timely excavation (2) timely screening after screening bacterial strains, found green mold contamination, immediately excavated and make up new seed blocks. At the same time pay attention to the elimination of dead mushrooms, old root clean, to prevent the proliferation of the bacteria (3) try to select the low temperature and dry season cultivation, reduce the incidence. After the bottle was squeezed, the mycelial healing stage was covered with a plastic film. The amount of ventilation, pay attention to dehumidification. Late plastic film can not be opened too early to prevent the healing of the bacteria block invaded. After the emergence of the mold, the mold should be scrubbed with more than 40% sulfur suspension or 50% carbendazim WP 800 times.
(4) In rainy or rainy seasons, special attention should be paid to the ventilation and dehumidification of mushroom houses, diligently turning and stacking, and increasing the stacking area and distance in order to reduce infection.
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