Miscellaneous fungi and pests of straw mushroom and their control

Volvariella volvacea is a common strain of edible mushroom, which has simple edible method and high nutritional value, and is a common dish in daily life. The cultivation of volvariella volvacea is not easy. Here is a brief introduction to the types of miscellaneous bacteria, diseases and pests of volvariella volvacea and their control.

I. Umbrella vulgaris

Flammulina velutipes is divided into two kinds of fungi, which are the most common miscellaneous bacteria in the process of cultivating volvariella volvacea. Their hyphae grow earlier than volvariella volvacea and spread rapidly. generally, they form mushroom buds before straw mushrooms produce mushrooms, competing for nutrients and water of straw mushrooms. Flammulina velutipes can pollute the body of volvariella volvacea and affect the quality of volvariella volvariella.

Control methods: straw mushroom culture nutrients must be fresh, clean, after strict, meticulous sterilization treatment, and the water content should be controlled at about 70%. If it is found that the ghost umbrella bacteria should be removed and sterilized in time to avoid the spread of bacteria.

2. Green mildew

Green mold is the most serious disease in the process of cultivating volvariella volvacea. It includes Penicillium and Trichoderma viride. In the early stage of the colony, it is white, dense and without fixed shape. In the later stage of the colony, the color begins to turn green gradually, which begins to pollute the straw mushroom body. In serious cases, it will lead to the death of a large area of straw mushroom.

Control methods: the nutrients of volvariella volvacea had better be fresh and fried. Attention should be paid to the moisture requirements of the culture material: controlled at 70% and pH (pH8.0-9.0). Pay attention to ventilation during cultivation to avoid excessive concentration of carbon dioxide. After the occurrence of the disease, the germs should be dug up in time, and lime powder or carbendazim liquid should be sprayed around to prevent the bacteria from spreading.

Third, mushroom flies

Mushroom fly is mainly harmful to larvae, and its larvae feed on the hyphae and fruiting bodies of volvariella volvacea, which will seriously affect the normal occurrence and fruiting time of volvariella volvacea, hinder the solid growth of volvariella volvacea and lead to a decrease in yield. its adults will also spread other diseases.

Control methods: pay attention to the cultivation environment of straw mushroom, to keep clean and hygienic, such as after the occurrence of mushroom flies, you can use aerosol spray or fumigation, at the same time can use yellow board and other traps, the effect is better.

Straw mushroom is an important tropical and subtropical mushroom, and it is also the third largest cultivated edible fungus in the world. The annual output of straw mushroom in China ranks first in the world. The general population can eat straw mushroom, and it is a high-quality food for patients with diabetes.