Why little knots always happen in caps of Oyster mushroom？

In the cultivation process of Oyster mushroom, some little knots always happen in caps of Oyster mushroom, this kind of phenomenon may happen in every winter, which may be because:

1. Low temperature, high humidity and poor ventilation. In low temperature, poor ventilation, high humidity in greenhouse and small amount of evaporation will cause a layer of water film on the surface of mushroom caps.

2. Temperature shock, excessive temperature differentials, high temperature at daytime, temperature shock at night and uneven growth of cell on mushroom caps.

Prevention method: 

A. People could increase temperature and keep warm. In low temperature season, people should adopt heating measures to balance the growing of sporocarp when the temperature of greenhouse is relatively low at night. At the same time, people should also pay attention to the measure of heat preservation to reduce the heat loss of mushroom greenhouse and try to avoid the stimulation of sporocarp, which may be caused by low temperature.

B. Reduce the amount of water-spraying, pay attention to the ventilation after spraying water. In low temperature season, it is improper to spray water repeatedly and it is proper to spray water for one time per day. People should also give ventilation after spraying water and avoid excessive water in mushroom caps.