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Physiological Disorders of Mushrooms and Their Control Methods

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Mushrooms are relatively sensitive to their environment. A poor cultivation environment will hinder their normal growth and development, produce various abnormal phenomena, and lead to reduced yields and lower quality. Common physiological disorders of mushrooms include excessive mycelial growth, hard opening of the caps, thin-skinned early opening, and the appearance of ground-button mushrooms and hollow-stem white-core mushrooms. They are described below: Symptoms of excessive mycelial growth: after the casing soil of the mushroom bed is watered, the fluffy mycelium of the mushroom will continuously grow toward the surface of the fine soil, and in severe cases will form a fine, dense, water-impermeable mycelial mat, thereby delaying the time of fruiting and reducing the

Mushrooms are relatively sensitive to their environment. A poor cultivation environment will hinder their normal growth and development, produce various abnormal phenomena, and lead to reduced yields and lower quality. Common physiological disorders of mushrooms include excessive mycelial growth, hard opening of the caps, thin-skinned early opening, and the appearance of ground-button mushrooms and hollow-stem white-core mushrooms. They are described below:

Excessive mycelial growth

Symptoms: after the casing soil of the mushroom bed is watered, the fluffy mycelium of the mushroom will continuously grow toward the surface of the fine soil, and in severe cases will form a fine, dense, water-impermeable mycelial mat, thereby delaying the time of fruiting and reducing the yield of mushrooms.

Causes: mostly caused by watering the soil layer too lightly and too quickly, a mushroom house temperature exceeding 22°C, humidity exceeding 90%, and poor ventilation.

Preventive measures: 1. Try not to use spawn whose aerial mycelium grows too vigorously and too densely. 2. After casing, the soil layer should not be watered too hastily; spraying should be carried out in the early morning and evening when the weather is cool, and at the same time increase ventilation in the mushroom house and reduce the relative humidity of the air. 3. Immediately re-case the soil and spray a little more water to encourage the mycelium to form fruiting bodies in time; alternatively, before the small mushroom buds form, gently rake open the surface of the casing soil and increase the ventilation rate to reduce the relative humidity.

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