How to prevent and control bacterial brown blotch disease in oyster mushrooms? Detailed cultivation techniques
What harm does bacterial brown blotch disease cause in oyster mushrooms? How to prevent and control it? We hope experienced netizens can help introduce and guide. The harm of bacterial brown blotch disease in oyster mushrooms: bacterial brown blotch disease of oyster mushrooms is commonly known in production as yellow mushroom disease. The disease comes on fast and spreads rapidly, and can occur from the young mushroom stage to the mature stage. Oyster mushroom yellow...
What harm does bacterial brown blotch disease cause in oyster mushrooms? How to prevent and control it? We hope experienced netizens can help introduce and guide.The harm of bacterial brown blotch disease in oyster mushrooms:
Bacterial brown blotch disease of oyster mushrooms is commonly known in production as yellow mushroom disease. The disease comes on fast and spreads rapidly, and can occur from the young mushroom stage to the mature stage.
Bacterial brown blotch disease of oyster mushrooms is a bacterial disease caused by Pseudomonas bacteria. Its symptoms are as follows: when the fruiting body is affected, light yellow spots appear locally on the surface; when humidity is high, the affected area feels sticky and moist and the infection penetrates into the internal tissue, causing the fruiting body to rot, accompanied by a viscous secretion and giving off a foul odor, affecting the appearance of the oyster mushroom and causing it to lose its edible value.
Causes of bacterial brown blotch disease in oyster mushrooms:
In oyster mushroom production in the Beijing suburbs, this disease often occurs from March to May; under conditions of high temperature and high humidity and poor ventilation, the disease is severe, and it often develops rapidly after heavy fog or sandstorm weather; the degree of incidence differs among varieties, and generally black varieties have a high and severe incidence rate; in mushroom farms with a long history of cultivation, the disease is severe, especially when the same variety has been cultivated for many years, as the resistance level of the variety declines and the disease occurs easily; improper watering in cultivation management, such as repeated sprinkling that makes the surface and interior of the fruiting body absorb water to a saturated state, promotes bacterial reproduction and growth. In addition, mushroom gnats and flies are also insect vectors that transmit the pathogen and can aggravate the damage; when mushroom gnats and flies occur severely in the mushroom house, the disease also occurs severely.
Prevention and control methods for bacterial brown blotch disease in oyster mushrooms:
In spring, foggy, low-light, rainy and dusty weather easily occurs, affecting normal ventilation in the mushroom house and creating a stuffy, humid environment favorable for the occurrence and spread of bacterial brown blotch disease in oyster mushrooms.
Reasonable watering and ventilation: the water source used should be clean, and water should be sprayed in a mist form; at the same time, it should be coordinated with ventilation, so as to avoid water accumulation on the caps and stuffiness and humidity in the shed, while also maintaining suitable humidity in the mushroom shed.
Strengthen inspection, discover and remove diseased mushrooms as early as possible, and at the same time pay attention to environmental cleanliness, so as to delay the spread of the disease and reduce the damage.
Use physical control techniques such as insect-proof nets, yellow sticky boards and insect-trapping lamps to block and trap mushroom gnats and flies, reducing transmission vectors.
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