Why do young oyster mushroom fruiting bodies die? Cause analysis and control methods
In oyster mushroom production, due to unsuitable cultivation environment and substrate, as well as improper management or the impact of disastrous weather, mushroom beds often experience young mushrooms shrinking, turning yellow, and finally withering, and sometimes it even causes young mushrooms to die in batches, seriously affecting yield and quality. So what are the causes of young oyster mushroom death? Let's take a look together.
1. Excessive temperature
After the primordia of oyster mushrooms form, if they encounter sustained high temperatures above 30 degrees, their caps will gradually wither, ultimately causing young mushrooms to die in large numbers and seriously affecting yield. For this situation, the temperature of the mushroom shed should be reasonably controlled. When the temperature is too high during the fruiting period, well water can be sprayed to lower the temperature of the mushroom shed. If cultivated outdoors, thick straw curtains or rice straw can be used to cover the mushroom shed for shade, avoiding sunlight exposure. At the same time, attention should be paid to frequent ventilation and air exchange, reducing the temperature inside the mushroom shed as much as possible.
2. Lack of moisture
After the young buds of oyster mushrooms form, if the relative air humidity in the mushroom room or mushroom shed is below 80%, the young mushrooms will wither and die due to lack of water. This is because oyster mushrooms have high requirements for air humidity during the fruiting period. Therefore, after budding, water should be sprayed in the mushroom shed 4-5 times a day to keep the air humidity at around 90%, so that the young mushrooms can develop well. However, when spraying water, attention should also be paid to making it as little, even, and fine as possible. If the amount of water sprayed is too large, it will also cause the young mushrooms to rot and die, so special attention must be paid.
3. Excessive water spraying
During the expansion period of oyster mushroom fruiting bodies, relatively high air humidity also needs to be maintained. If too much water is sprayed, the fruiting bodies will expand rapidly, are highly prone to edema, and eventually turn yellow and rot, making them highly susceptible to infection by pathogens and death. Therefore, when spraying water in the mushroom shed or mushroom room, the water should be evenly sprayed on the ground and surrounding walls, not directly on the fruiting bodies. At the same time, the correct amount of water should be mastered, and it should not be sprayed too much.
4. Poor ventilation
In addition to temperature and humidity, ventilation is also one of the important factors affecting the growth and development of young mushrooms. When the indoor carbon dioxide concentration exceeds 0.5%, young mushrooms are highly prone to forming "big-foot mushrooms" with caps like fists or thick stipes and small caps. Therefore, attention should usually be paid to ventilation and air exchange to ensure fresh indoor air, especially in high-temperature seasons, to avoid the formation of large numbers of deformed mushrooms.
The above is an introduction to the causes of young oyster mushroom death and control methods. We hope it can help you. To learn more related knowledge, please stay tuned to us.