What are the reasons for low shiitake mushroom yields? Latest analysis
Shiitake mushroom is a type of fungus that grows on wood, is the world's second-largest edible mushroom, is an important edible and medicinal mushroom species, and is cultivated in all regions of our country. However, many growers often experience low yields or even total crop failure during cultivation, seriously affecting the economic returns of growers, so what are the reasons for low shiitake mushroom yields? Let's take a look together with Qinnong Web.
1. Improper site selection
Shiitake mushroom has certain requirements for its growing site. The basic requirement is to cultivate it in an environment with bright light, good ventilation conditions, and clean, hygienic surroundings, so that it can fruit and grow normally. If the growing site is in a dark, poorly ventilated, or unhygienic place, it will cause shiitake mushroom to fail to grow normally, and it is also unfavorable for mycelial growth. During fruiting, shiitake mushroom releases a large amount of carbon dioxide. If ventilation conditions are poor, the carbon dioxide concentration in the air will become relatively high and cause poisoning, making normal fruiting difficult or causing deformed growth. Shiitake mushroom also has certain requirements for environmental hygiene. During cultivation, the site must be thoroughly disinfected and sterilized. Especially when inoculating spawn, an aseptic environment must be maintained, otherwise inoculation will fail.
2. Poor substrate
The selection and preparation of the substrate are extremely important, as they are closely related to the yield and quality of shiitake mushroom. The substrate selected must be clean, hygienic, and loose raw materials. Raw materials that have already been contaminated or caked should not be used for cultivation, otherwise the spawn will become contaminated and mycelial growth will fail. When mixing, attention should be paid to the method. Nitrogen fertilizers such as urea should not be added excessively. After inoculation, nitrogen fertilizer decomposes and releases nitrogen gas, which can easily poison the mycelium and cause mycelial growth to fail. Attention should be paid to the moisture ratio of the substrate; whether there is too much or too little water, neither is suitable for mycelial growth. In addition, after the substrate is properly mixed, disinfection work must be done well.
3. Improper spawn selection
When selecting spawn, it should be chosen according to climatic conditions. For example, choosing high-temperature-type spawn in winter and low-temperature-type spawn in spring will cause the spawn to be unable to grow in a suitable climate and temperature, leading to mycelial growth failure. Spawn that has already aged or been contaminated should also not be selected, as they can easily cause slow mycelial growth or no mycelial growth, delayed fruiting, or no fruiting. Therefore, when selecting spawn, suitable spawn for cultivation must be chosen according to the local climate and environment.
4. Improper management
Management of shiitake mushroom in the later stage involves temperature, light, moisture, and ventilation. During the fruiting period, if light is insufficient, fruiting will be slow, resulting in low yield. Air humidity is also extremely important. If humidity is low, small mushrooms will suffocate to death, while directly spraying water to increase humidity will cause shiitake mushroom to rot. The best method to increase humidity is to spray water mist. If ventilation is poor, carbon dioxide and toxic gas levels will be relatively high, causing poisoning or deformed growth of shiitake mushroom. In addition, failure to harvest shiitake mushroom promptly after maturity will also affect yield.
The above are the reasons for low shiitake mushroom yields brought to you by Qinnong Web. The editor introduced the reasons for low shiitake mushroom yields from several aspects, hoping to help you. For more related knowledge, please stay tuned to Qinnong Web.