When making mushrooms using the bottle cultivation method, each species of mushroom needs its own moisture content and culture size. The researchers have now refined their understanding of bottle cultivation and, depending on the species, can produce mushrooms under even more ideal circumstances.
Since 2013, the Rural Development Administration has been studying how much soil to put in the bottle and how much moisture there should be in the soil in order to grow the mushroom in ideal conditions, especially the enoki mushroom , king trumpet mushroom and oyster mushroom . These three species make up more than 70 percent of the total number of mushrooms grown in the nation.
As a result of their research, they found that the culture soil, which consists mainly of sawdust, corn on the cob, cottonseed husk, rice bran, wheat husk, and beet pulp, and should be used for cultivating each of the three types of mushrooms, should have different levels of amount, moisture absorption and also expansion and growth Contractility through moisture.
Also, in order to have adequate spacing between soil particles, a factor that allows mushrooms to grow healthily, it is essential to control moisture levels as well. For oyster mushrooms that require a relatively small amount of culture medium, adding beet pulp and cottonseed meal to the soil is ideal, as the ingredients can be easily expanded by moisture and are also rich in nitrogen.
When rice bran and wheat bran in the soil are used for enoki mushrooms and king’s trumpet mushrooms, respectively, an adequate gap is created between the soil particles.
The recent study also found that the correct moisture content in the soil and the correct amount of soil needed on a 1,100 milliliter basis is 66 to 68 percent and 680g to 710g for the King Trumpet Mushroom 69 to 71 percent and 600g to 650 g for the oyster mushroom and finally 64 to 66 percent and 700 g to 720 g for enoki mushrooms.
For example, if 10,000 bottles of Enoki mushrooms were grown per day under the same conditions, these results could save farmers about KRW 10 per bottle in the cost of making the growing soil. The researchers estimate that production would increase by 11.6 percent, which in turn would lead to an increase in annual profits to around KRW 15.8 billion across the country.
“Farmers have so far used their own methods to grow mushrooms, but the production differs in both quantity and quality,” said an official from the Rural Development Administration. “Now that we have this new approach to creating the best possible environment for the mushrooms to grow, farmers can properly control the moisture content, the quality of the crop soil and the void in their soil particles. This will certainly lead to more stable production of good quality mushrooms throughout the year. “