Soilless substrate cultivation, base for the growth of mushrooms
Soilless substrate cultivation serves as the foundation for growing mushrooms, offering significant advantages in terms of yield, flavor, appearance, and overall quality. It's a smart and effective choice for mushroom farmers looking to optimize their production. But how do you create a high-quality soilless substrate? With the limited availability of peat and restrictions on large-scale peat extraction, using alternative, locally available materials is not only practical but also sustainable.
The key lies in utilizing agricultural waste and organic byproducts. By combining these with beneficial microorganisms, you can create a nutrient-rich, well-structured substrate that supports robust mushroom growth. One effective method involves using local resources like fallen leaves, crop stalks, and grasses. Start by gathering around 10 cubic meters of these materials and pile them up in a well-ventilated area. Make sure to compress the piles slightly to reduce volume and improve density.
Next, prepare a solution of 2.5 kg of urea dissolved in 150–200 kg of water. This mixture provides a nitrogen source, which is essential for microbial activity. Evenly spray the urea solution over the pile until the moisture content reaches 60–70%. Cover the pile with an air-permeable tarp and let it sit for 24 hours. This step allows the material to absorb the nutrients and begin the initial breakdown process.
The next step involves preparing a microbial inoculant. Mix 2 kg of golden baby microbial fermentation broth with 5 kg of rice bran to create a nutrient-rich bacterial culture. This mixture acts as a "starter" for the fermentation process. Spread this evenly over the prepared pile, ensuring the microbes have access to both carbon and nitrogen sources. This step is known as "inoculation," where the microbial agents are introduced into the substrate to accelerate decomposition and nutrient release.
After inoculation, cover the pile again with an air-permeable cover and protect it from direct rain and excessive sunlight. Within 5–10 days, the temperature inside the pile should rise to 55–60°C or higher, indicating active microbial activity. At this point, turn the pile to ensure even decomposition and repeat the process 2–3 times for optimal results. This method not only reduces waste but also creates a sustainable, high-quality growing medium that enhances mushroom production.