Symptoms and control of truffle disease of Pleurotus ostreatus

Pleurotus ostreatus (scientific name: Pleurotus ostreatus;, also known as Pleurotus ostreatus, Taiwan also known as Pleurotus ostreatus, Pleurotus The bud tube of Pleurotus ostreatus continues to branch and elongate to form uninucleate hyphae. Binucleate hyphae are formed after the combination of uninucleate hyphae of different sexes. Binucleate hyphae have lock-like union on the septum. With the help of lock-like union, binuclear hyphae continue to divide cells, produce branches, and grow and reproduce infinitely under suitable conditions.

In the seed solid layer, the basidium is produced at the top of the binuclear hyphae, and its genetic material is recombined and separated to form four basidiospores. After the spores mature, they eject from the bacterial folds and complete a life cycle. As there are many kinds of Pleurotus ostreatus cultivation, as a producer, we should be able to distinguish the common species from the appearance, so as to avoid the wrong production and marketing. Therefore, this paper also briefly introduces the morphological characteristics of several common cultivated species of Pleurotus ostreatus from the appearance.

Nutritional Analysis of Pleurotus ostreatus

1. Pleurotus ostreatus contains anti-tumor selenium, polysaccharides and other substances, which has a strong inhibitory effect on tumor cells and has immune properties.

two。 Pleurotus ostreatus contains a variety of vitamins and minerals can improve human metabolism, enhance physique, regulate autonomic nerve function and so on, so it can be used as nutrition for frail patients, and has a certain effect on reducing blood cholesterol and preventing urethral calculi. At the same time, it can play a conditioning role in women's climacteric syndrome.

The efficacy of Pleurotus ostreatus

In terms of efficacy, flat mushroom, sweet taste, with deficiency, anti-cancer effect, can improve human metabolism, enhance physique, regulate autonomic nerve. Pleurotus ostreatus contains polysaccharides, which has a strong inhibitory effect on tumor cells and has immune characteristics. Pleurotus ostreatus also has the effect of chasing wind and dispelling cold, relaxing muscles and activating collaterals, which can treat waist and leg pain, hand and foot numbness, meridian discomfort and other diseases. In addition, Pleurotus ostreatus has curative effect on hepatitis, chronic gastritis, stomach and twelve finger ulcers, osteomalacia, hypertension, etc., it also has a certain effect on reducing blood cholesterol and preventing and treating urethral calculi, and can play a conditioning role in female climacteric syndrome.

Symptoms and control of truffle disease of Pleurotus ostreatus

Symptoms of truffle disease of Pleurotus ostreatus:

The mycelium is similar to the hyphae of Pleurotus ostreatus and can not be distinguished by the naked eye; it can go deep into the substrate, compete with the hyphae for nutrition, water and bottom-up space, and inhibit the ability of Pleurotus ostreatus to produce mushrooms. Its physiologically mature mycelium forms ascomycetes on the mushroom surface of the culture material, especially in the area around the bacteria column in contact with the soil during border planting; the ascomycetes in groups or aggregates are brain-shaped wrinkles in shape, very similar to walnut kernels without astringent skin, wrinkled and not stretched. When it first appeared, most mushroom farmers mistakenly thought it was the budding of Pleurotus ostreatus, but there was still no phenomenon after a few days, but the ascomycete changed from milky white to light milky yellow, and then gradually changed to yellowish brown to red, and its volume was also expanding continuously. at this time, it is too late to take various measures to prevent and cure. When the disease is serious, the whole batch of cultivation can not produce mushrooms. The smell of high concentration of bleach powder in the mushroom shed is one of the important signs of truffle disease.

Causes of truffle disease of Pleurotus ostreatus:

Gymnocystis przewalskii is a malignant miscellaneous bacteria in the cultivation and production of edible fungi. A large number of spores exist in the base material, and their vitality is extremely strong. When the temperature is 16-35 ℃ and the air humidity is more than 70%, they can germinate quickly and form harm. The pathogen is particularly harmful to Pleurotus ostreatus cultivated with soil mulching.

Control measures of truffle disease of Pleurotus ostreatus:

1. The culture material must be fully and uniformly fermented, and the moisture content should not be higher than 63%.

2. The treatment of cultivated soil shall refer to the above.

3. Before entering the shed, in addition to treating the greenhouse according to the above requirements, the bacterial bag shall be re-sprayed with bleach solution of more than 1.2% concentration for an interval of 5 days. In areas where there is a record of onset, it is also necessary to spray polymethyl solution again.

4. Once the occurrence of truffles is found, the greenhouse should immediately increase ventilation, reduce temperature and humidity, dig out the affected area and its outer edge of 3 cm (depending on the time and degree of the disease) with soil belt culture material, backfill the treated fine soil, and blanket spray 1% bleach solution in the whole shed, and smear 400 times more than 50% carbendazim wettable powder solution on the diseased part.