How to treat Pleurotus ostreatus infected with Chloromycetes

Green mold, also known as green Trichoderma, seriously damage the production of Pleurotus ostreatus, different stages of Pleurotus ostreatus will suffer from its harm, once the disease, light yield reduction, heavy harvest, restricting the production of Pleurotus ostreatus.

Green mold of Pleurotus ostreatus

First, symptoms: it is easy to get sick in the bacteria bottle or after sowing or on the unpicked old roots, produce green colonies and spread, compete with Pleurotus ostreatus for nutrition, and the toxins secreted affect the mycelium colonization and fruiting body formation of Pleurotus ostreatus. After mushroom picking, the mushroom root is vulnerable; after the culture block is infected, green colonies grow and spread rapidly, resulting in poor growth or death of mycelium or fruiting body of Pleurotus ostreatus.

Second, prevention and control methods:

1. Do a good job in disinfection of mushroom houses: thoroughly disinfect flat mushroom houses and eliminate all kinds of sundries. The seams in the walls are plastered with lime or yellow mud. The walls, roof and bedstead are painted with 10% fresh lime water, the floor and roof are sprayed with sur, then sprinkled with quicklime powder, and finally fumigated with 10ml/m3 formaldehyde and 5g/m3 potassium permanganate vaporization. During the cultivation period of Pleurotus ostreatus, 0.1% potassium permanganate or 3% Mel 5% carbolic acid should be sprayed regularly.

2. Select excellent strains: Pleurotus ostreatus, select those with dense mycelium, white, sturdy, strong anti-impurity ability, no pollution and suitable age.

3. Select high-quality culture materials: the culture materials should be fresh and pollution-free. About 2% lime, 1% gypsum and 0.1-0.2% carbendazim can be added to the ingredients, and the growth of green mold is inhibited. If the culture material of Pleurotus ostreatus is not fresh or moldy, it should be reused by high temperature fermentation.

4. Strengthen cultivation management: the temperature of mushroom room should not be too high at the initial stage of Pleurotus ostreatus cultivation, and the humidity is about 70%, which is not conducive to mold growth, but the growth of Pleurotus ostreatus is not affected. During cultivation, the amount of seed can be increased, and the amount of bacteria accounts for 10-15% of the dry material weight, and the mycelium of Pleurotus ostreatus forms a growth advantage in a short period of time. In the process of cultivation, proper ventilation and control of mushroom room environment are beneficial to mycelium growth and inhibition of green mold.

5. Chemical control: when there is a small amount of green mold at both ends of the culture material or bag, smear or spray the damaged part of Pleurotus ostreatus with 0.1% methyl topiramate, 0.1-0.2% Dysen zinc, 0.1% Mel 0.2% carbendazim or concentrated lime water supernatant to prevent the spread of conidia, or treat the infected part of Pleurotus ostreatus with a mixture of 2% formaldehyde and 5% carbolic acid to inhibit the growth of miscellaneous bacteria. If the green mold has gone deep into the material, cover it with a sand cloth of 0.2% carbendazim solution, then gently dig out the contaminated material block, spray 0.2% carbendazim or other fungicides on the removed material surface, or smear thick lime milk, and then fill it with fresh materials or bacteria to control its development. The bacterial bags with serious pollution can be buried deeply. During the period of mushroom emergence, 70% methyl topiramate, or 50% carbendazim 1000 times liquid, or 10% water agent Shuangxiaoling can be sprayed once every 3-5 days, and the control effect is good.