Beware of bacterial mushroom brown spot

Pleurotus ostreatus, commonly known as maculopathy or yellow mushroom disease, is a common bacterial disease in Pleurotus ostreatus production. Pleurotus ostreatus not only appears yellow lesions after infection, but also affects its appearance. It is also bitter and can not be eaten. The diseased mushrooms can only be thrown away and many farmers suffer from it. The disease can occur from the young mushroom period to the mature period, the peak season of onset, once it occurs, the rapid spread, the loss can reach more than 50%.

Symptom recognition

Pleurotus ostreatus appeared early in the disease on the surface of the mushroom body with yellowish spots. When the humidity is high, the site of the disease has a sticky wet sensation and penetrates into the tissues. The mushroom body rots with thick secretions and emits a foul odor. Affects the appearance of oyster mushrooms and loses the value of food.

Disease prevention and control

At present, the city's fall and winter oyster mushroom production has entered the late stage of growth, mycelial growth is gradually weakening, disease resistance is reduced, as the temperature rises, in case of continuous oligo sunshine or hazy weather, it is easy to cause shed moisture and carbon dioxide concentration Too high is conducive to the occurrence of Pleurotus ostreatus or the formation of long-legged malformation mushrooms. According to a recent survey conducted by the Beijing Plant Protection Station, macular disease has occurred in Pleurotus ostreatus, and the incidence rate is generally 0.1%-0.5%. Some of the sheds are heavier with an incidence rate of 5%-10% and a maximum of 35%. .

Reasonable water spray and ventilation. The source of water should be clean, spray water, and coordination with the ventilation, both to prevent the stagnation of water and shed moisture, but also to maintain the mushroom shed moisture. Strengthen the inspection, early detection and removal of mushrooms, while paying attention to the environment clean, to delay the spread of the disease, reduce the damage.

Use physical control techniques such as insect nets, yellow plates, and insect traps to block, trap and kill mushrooms and flies, and to reduce the spread of mediators so as to prevent further spread of the disease.

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