Pleurotus ostreatus common disease prevention and control method

On cloudy days, when light is limited and humidity levels in the mushroom shed are high, poor ventilation can lead to serious issues for *Pleurotus ostreatus*, such as soft rot and bacterial scab. These problems can significantly reduce yield and quality, making prevention a crucial part of mushroom cultivation. To address these challenges, we have developed a set of practical and effective strategies based on our hands-on experience. Here’s a detailed guide to help you prevent and manage these common diseases in your mushroom farm. 1. **Select disease-resistant strains**: Choosing varieties like Hebei Spore-Free or Jiangsu Wild Wind can greatly improve the resilience of your mushrooms. These strains typically feature strong mycelial growth and robust fruiting bodies, leading to higher yields and better resistance to environmental stress. 2. **Improve air circulation**: Proper ventilation is essential for reducing humidity and preventing the buildup of harmful pathogens. Regularly opening vents or using fans can help maintain a healthier environment inside the shed. 3. **Control humidity effectively**: Using a sewer water method helps maintain a stable relative humidity of around 65%, which is ideal for *Pleurotus ostreatus* without promoting excessive moisture that could encourage disease. 4. **Disinfect the growing area**: Sprinkling Baiyou powder on walls and surfaces is an economical and effective way to disinfect the shed. This practice helps eliminate harmful microbes and reduces the risk of contamination. 5. **Apply targeted chemical treatments**: Two effective formulations are recommended: - (1) Mix 2.5 million units of agricultural streptomycin, 50% clotrimazole, 10 grams of Green Wind 95, and 14 kg of water. - (2) Combine 2.5 million units of agricultural streptomycin, 9550 ml of Green Wind, 17 grams of Green Fenwei No. 1, and 14 kg of water. Streptomycin is a broad-spectrum antibiotic that targets bacteria, while clotrimazole is effective against fungal infections. When used together, they enhance each other’s effectiveness. Green Wind 95 supports metabolic processes and promotes healthy growth, while Green Fenwei No. 1 acts as a nutrient booster. This combination not only strengthens the mushrooms but also combats existing pathogens. **Application method**: Choose one of the two formulas, mix the ingredients thoroughly, and spray the solution onto the fruiting bodies once daily. Ensure the mist is fine and does not drip. Apply it twice, and recovery is usually seen after three applications. Avoid spraying directly on the fruiting bodies with water during this period to prevent further damage. By following these steps, you can significantly reduce the occurrence of soft rot and bacterial scab, ensuring a healthier and more productive mushroom harvest.

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