Reasons for Slow Mycelial Growth in Oyster Mushrooms and Solutions

During the cultivation and management process, it is necessary to understand the biological characteristics of different varieties and the requirements of the mycelium during its growth and development stages for nutrients, moisture, temperature, light, pH, and other environmental factors. After inoculation (at a 10%-15% inoculation rate), mycelium extending outward from the spawn block can be observed in the culture room within 2-3 days, growing 3-5 cm in 7-10 days, fully colonizing the bag in 20-30 days, and producing mushrooms in 35-45 days. If these standards are not met, the reasons are:

(1) The raw materials have been stored for too long and are highly acidic; a sour smell can be detected after mixing. Solution: Add a little more quicklime when preparing the substrate to adjust the pH of the growing medium.

(2) The moisture content of the growing medium is too high. The suitable moisture content of the growing medium during the mycelial growth stage of oyster mushrooms is about 65%. It can vary depending on the outside temperature: it should be somewhat lower in hot seasons and somewhat higher in cold seasons.

(3) Maintain proper temperature. During the mycelial growth and development stage of oyster mushrooms, 22-25°C is optimal. Special attention should be paid to keeping warm at night so that the mycelium can grow rapidly.