What are the key points to consider when buying black wood ear mushroom spawn?
The cultivation of black wood ear mushroom has a long history. It was the first edible fungus species to be artificially cultivated in the world, with a history of more than 1,400 years so far. Nowadays, quite a lot of people grow wood ear mushroom. To cultivate black wood ear mushroom well, spawn is the key point, so what should you pay attention to when selecting spawn? Let's take a look together.
1. Pay attention to the appearance
When buying, check whether the label on the spawn bottle matches the black wood ear mushroom spawn, so as to avoid buying the wrong one. The culture time should be within two months, counted from the inoculation date. The spawn age should preferably be 30-40 days. At the same time, also check whether there are cracks on the bottle wall or whether the cotton plug has fallen off. If so, do not choose it.
2. Pay attention to the mycelium
Spawn with white mycelium of high purity and thick, short, dense and neat villi is high-quality spawn. If there are mycelia of other colors such as green, yellow, red, cyan or gray among the mycelium, that indicates the mycelium has been infected by other contaminant fungi. Such spawn should be strictly culled and is not suitable for purchase.
3. Pay attention to the fruit body base
If there is a pale black fruit body base between the bottle wall and the substrate, it is high-quality spawn. If there is a small amount of fruit body base, it is normal spawn. If the amount is too much, that means it has been subcultured too many times; although it produces fruit bodies early and in large numbers after inoculation, they do not grow large and the yield is relatively low, so it is not recommended to buy. In addition, if there is no gelatinous substance on the bottle wall or only light brown gelatinous substance, then it is qualified spawn. If there is yellow-brown liquid, it is aged spawn and must not be purchased.
4. Pay attention to the spawn block
The surface of sawdust spawn is covered with mycelium, and the sawdust is no longer visible. When digging it out, it is best if it comes out in a block rather than crumbling. If the spawn block has dried out and shrunk, it cannot be used and is not recommended for purchase.
5. Pay attention to the smell
Pull out the cotton plug. If you smell the fresh fragrance of spawn, it is a qualified product; if there is an off-odor such as sour wine or musty stench, then it is deteriorated spawn and cannot be used.
The above is an introduction to the key points to consider when buying black wood ear mushroom spawn. We hope it can help you. To learn more related knowledge, please stay tuned to us.