What should I do if the growth rate of Pleurotus ostreatus is extremely slow?
This problem is mainly manifested in the slow germination and slow growth of the strain block after sowing, and the hyphae are obviously thinner and sparser than normal. Similar to the Mucor mycelium in common miscellaneous bacteria, the mycelium is grayish white and dark, not as white and strong as the normal Pleurotus ostreatus mycelium, and it takes a long time to occupy the surface of the material.
In addition, this kind of situation often makes the probability of pollution and disease in the later period of the bacteria bag higher than normal. There are two main reasons for this. One is that the source of the strain has not been detoxified, or the detoxified mother species has degraded or aged during the production of the third-level strain, which reduces its due resistance. The second is improper handling of the base material. Due to the lack of nutrients and incomplete nutrition, the mycelium is weak. Or the auxiliary raw materials with unknown ingredients were added to the formula, which inhibited the healthy development of mycelium. Or due to the long-term storage after mixing the material, and the high number of environmental bacteria, a large number of harmful microorganisms enter and breed in the material, which has an irreversible negative effect on the mycelium of Pleurotus ostreatus. In addition, excessive moisture in the base material, tight filling, and too few micropores in the plastic bag can all lead to such problems.
Prevention:
On the premise of confirming that the bacteria bag can still be saved, the right medicine should be prescribed. First of all, the method of "punching and increasing oxygen" is adopted for the fungus bags with weak hyphae, so that the mycelia can be rejuvenated under strong oxygen conditions and increase resistance. Secondly, strengthen the disinfection and sterilization of the places where the bacteria are produced and its environment. Drugs can be used to spray and sterilize the mushroom sheds, and attention should be paid to the use of drugs at intervals. Thirdly, if the moisture content of the base material is low, when the mycelium is basically covered with the material surface, add 1200 times of edible mushroom three-dimensional nutrient essence (mixing type) to soak the fungus bag to provide comprehensive and rich nutrients for the mycelium . Finally, it is confirmed that the base material has been corrupted and the bacteria bags that cannot be sterilized should be poured out in time and dried in the sun for reuse to reduce losses.