How to choose and purchase Straw Mushroom strain
The excellent strain of volvariella volvacea was produced in forage medium for winter (10-15 ℃). After overwintering. Cultivation in advance proved to be of high quality and high yield. Then the maternal species (first-class species) were obtained by tissue separation method, and the culture continued to be expanded for production and use in the same year. When purchasing straw mushroom strains, mushroom farmers should pay attention to the following points: 1. The mycelium of volvariella volvacea is transparent, silver-gray, evenly distributed, the mycelium is relatively sparse, and the reddish-brown chlamydospore is the normal strain. Mother species, original species and cultivated species of volvariella volvacea. If there are more chlamydospores, generally speaking, the fruiting body is smaller after mushroom production; on the contrary, the fruiting body is larger. two。 If silver-gray straw mushroom mycelium is mixed with white linear hyphae, followed by fish egg-shaped particles, yellowish brown for a long time, it may be mixed with small sclerotiorum; if the mycelium in the bottle is too dense and white, it may also be mixed with miscellaneous bacteria, should be eliminated. 3. If the hyphae in the bottle gradually disappear and mite-eating plaques appear, it means that there are mites and should be eliminated. 4. The mycelium in the bottle has shrunk and water stains appear. Those with fishy smell can not be used. 5. The suitable age of volvariella volvacea is about 18 days, and it is best not to use it if it is more than 30 days.
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How to prevent straw mushroom from becoming red mushroom disease?
"Red mushroom disease" may be brown rot, also known as vesicle disease, wet bubble disease and so on. Mainly harmful to mushrooms, straw mushrooms, Pleurotus ostreatus and so on. The disease is caused by a pathogen called verrucosporium. The main symptoms are as follows: the conidia and conidia of verrucosporium only infect the fruiting body, but not the mycelium. When the fruiting body is slightly infected.
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Three ways to prevent the mycelial growth of volvariella volvacea
(1) the culture material should not be too wet and the water content should not exceed 70%. Choose appropriate ventilation at noon or afternoon when the temperature is low. (2) after spraying mushroom water, open the doors and windows or uncover the film for ventilation to reduce the material temperature properly, and then close the doors and windows or cover the film properly when there are no water droplets on the material surface. (3) planted with cottonseed hull or waste cotton.
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