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What to Do When the Surface of Oyster Mushroom Substrate Turns Black? Cause Analysis and Control Methods
The main causes of blackening on the substrate surface and the control methods are: (1) Oyster mushroom mycelium soaked in water for a long time causes rot and blackening. In this case, the condensation water on the substrate surface should be absorbed and dried promptly. If it is grown on beds, excess water at the bottom should also be absorbed and dried promptly. (2) Contamination by foreign microorganisms and breeding of insect pests cause blackening. When blackening occurs, pests must be controlled or the affected part dug out promptly to prevent it from spreading.
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Detailed Explanation of Key Techniques for Oyster Mushroom Cultivation on Sterilized Substrate
1. Preparation of the culture substrate: Select fresh materials free from mold, uniform in coarseness, and remove impurities. Mix the raw materials together in proportion until evenly blended, then add water and stir; control the moisture content at 60%, so that when squeezed into a ball in the hand, slight moisture appears between the fingers but no water drips out. Then fill into bags. 2. Sterilization: Use the high-pressure cabinet sterilization method, holding at 120°C under stable pressure for 2-3 hours; or the steam sterilization method, steaming thoroughly at 100°C and holding for 4-6 hours. A steamer pot can also be used for sterilization: first add water to the pot, attach a steaming rack on top, and cover tightly with pressure. After steam rises from the top layer, sterilize for 10-15 hours.
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How to remedy the lack of water in the substrate in the late stage of oyster mushroom production
The yield of the first flush of oyster mushrooms accounts for about 40% of the total yield. Generally, after harvesting the second flush, because the water in the substrate is almost used up, even if mushrooms can still appear, they are few, the fruiting bodies are thin and weak, the flesh is loose and dry, and the taste is poor. To increase the yield, the following methods can be used to replenish water and nutrient solution: (1) Standing-bag hole irrigation method: the soaking method requires a water container, but sometimes because the container is small or for other reasons it is inconvenient, so this method can be used. Stand the fungus bags upright on the floor of the mushroom house, pull up the edges of the plastic bags so that water can be retained after adding it, then
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What should you do if herbicide is accidentally mixed into oyster mushroom (Pleurotus ostreatus) substrate?
Herbicide should never be mixed into the substrate when growing oyster mushrooms. As for what adverse effects mixing herbicide into the substrate may have on the growth of oyster mushroom mycelium, we have not yet carried out experiments in this area. I think that mixing 50 grams of herbicide into 2000 jin of substrate is not a low concentration; even if it does not affect mycelial growth, at the very least herbicide residues will accumulate in the oyster mushroom fruiting bodies, making it very difficult to guarantee the safety and hygiene of the product. The solution is to repeatedly rinse the herbicide-containing substrate with water (5-6 times), then drain off some of the excess water, add an appropriate amount of carbendazim (reduced by about 20% from the original amount), pile it up for fermentation, and then use the original method for inoculation and cultivation.
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Adding table salt to oyster mushroom substrate can increase yields
In oyster mushroom cultivation, using carbendazim to control contamination by foreign fungi is effective, but pesticide residues remain in the mushrooms, which is harmful to human health, and the cost is relatively high. According to experiments: when cultivating oyster mushrooms on raw substrate, adding 1.5 kg of table salt per 100 kg of dry substrate (dissolved in advance in a measured amount of water) and mixing thoroughly can prevent infection by foreign fungi and also bring mushrooms out 5-7 days earlier. At the same time, because table salt is rich in sodium, calcium, magnesium and other metal ions needed for oyster mushroom growth, if a 10% salt solution is sprayed in the early stage of fruiting body differentiation and after each flush is harvested, the mushrooms can be free of pesticide residues and their quality
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How to Prevent Sour Rot in Oyster Mushroom Substrate? Detailed Practical Measures
Recently the weather has been hot, rainy and humid, which easily breeds spoilage bacteria, and a moment of neglect can cause losses to oyster mushroom production. To prevent and control sour rot in oyster mushroom substrate, the key is to grasp six words: fresh, sparse, increase, air, dark, lower. Fresh: the substrate used, such as rice straw, corn stalks, wheat straw, etc., should be fresh and free of mold, and should be exposed to the blazing sun for 3 days before use. Sparse: use relatively small plastic bags with a diameter of 20 cm or less to cultivate oyster mushrooms, and during the spawn-running period stack only 1 layer, without overlapping, to help dissipate heat. Increase: when mixing the substrate, use lime
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How to keep oyster mushroom substrate moist? Sharing practical tips
1. Moisture retention by casing soil over a wall of mushroom logs. Inside the shed, lay a soil ridge 15-20 cm thick along the length of the mushroom bags, take the bags that are fully colonized and about to fruit out of their plastic bags, and arrange them neatly on the soil ridge. For each layer placed, cover with soil 3-4 cm thick, spray water on both sides of the soil and smooth it with mud. Then arrange the second layer of mushroom logs and cover with soil; up to 6-9 layers can be placed, and the topmost layer must still be covered with soil and smoothed. After the wall is built, spray one heavy watering so the casing soil absorbs enough water. After that, spray water every day to keep the casing soil moist, and manage fruiting as usual. This method can increase oyster mushroom yield by 50%
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Short-log sterilized-substrate cultivation techniques for reishi (Ganoderma lucidum)
Short-log sterilized-substrate cultivation is a new reishi cultivation technique that has developed rapidly in recent years. On average, each cubic meter of wood yields more than 20 kg of dried reishi, with high yields reaching more than 30 kg, an increase of 20% over conventional cultivation methods. The reishi is firm and thick in texture with a glossy surface, and its acid content is higher than that of bag-cultivated reishi. More than 90% of the product meets export requirements. 1. Cultivation season: Reishi is a medium-to-high temperature type fungus, and its yield is related to the tree species of the logs, the cultivation time and the cultivation technique. Inoculation time can be arranged from late October to December, or from early February to
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Clever Use of Oyster Mushroom Spent Substrate to Grow High-Quality Shaggy Mane Mushrooms
The shaggy mane mushroom (Coprinus comatus) gets its name because its shape resembles a chicken leg; its flesh is tender, delicious and nutritious. Using spent oyster mushroom substrate and idle vegetable greenhouses, shaggy mane mushrooms can be produced. A 60 sq m mushroom shed can take in 1000 kg of dry substrate and produce 750-1000 kg of shaggy mane mushrooms, with a market price of more than 4000 yuan, giving considerable economic returns. The specific cultivation measures are as follows: 1. Prepare the growing substrate. Crush the spent oyster mushroom substrate, and mix it in the ratio of 50% mushroom bran, 37% cottonseed hulls, 6% lime, 7% corn flour, and 0.1% carbendazim (added separately).
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Can wine lees be used as a growing substrate for oyster mushrooms?
High-yield method for cultivating oyster mushrooms and other edible fungi using fresh wine lees: 1. Adjust fresh beer lees to pH 8-9 with lime, add 3% corn mixed powder by wet weight and an appropriate amount of mixed hardwood sawdust, and adjust the substrate to about 65%. 2. Weigh dried white wine lees, add 15% corn mixed powder, 4% lime powder, and 130% water, mix well, pile up and ferment. 3. Use bag-type oxygen-permeable filling and inoculation for mycelial growth, and the bed-type casing-soil with film-covering fruiting method for two-stage full-conversion cultivation, or use conventional fruiting management, to achieve high-yield results. To make it easy for mushroom growers to grasp, here we focus on
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