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How do you identify poisonous wild mushrooms? Master these identification methods
So far, more than 10,000 species of wild mushrooms (fungi) have been discovered and recorded nationwide, among which there are as many as 192 species of poisonous mushrooms (fungi), and in the Jiangsu-Zhejiang area there are more than 30 species of poisonous mushrooms. Wild mushrooms (fungi) generally grow during the plum rain season and under high-temperature, high-humidity conditions in summer and autumn, so incidents of poisoning from eating them also mostly occur during this period. Poisonous wild mushrooms (fungi) often have the following characteristics: (1) High brightness of color. (2) The surface of umbrella-shaped and other mushrooms (fungi) is fish-scale-like. (3) There are ring-shaped protrusions on the mushroom stem. (4) The mushroom
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Identification and control methods for several common diseases of edible fungi
I. Causes of deformed mushrooms and measures to avoid them. Deformed mushrooms lower product grade and may even lose their commercial value, affecting the economic benefits of cultivation; this problem is widespread. Common deformed mushrooms include: caps tightly clasped and not opening, appearing "fist-shaped"; stipes long, thick and fleshy with small caps, appearing "vase-shaped"; caps sunken with cracked, outward-curling edges, appearing "broken-bowl-shaped"; caps narrow and long, appearing "ox-tongue-shaped"; caps with spots on the surface, appearing "pockmarked"; caps with swollen tumor-like protrusions in the center, appearing "belly-swollen"; two caps spreading side by side with stipes tightly joined, appearing "butterfly-shaped"; caps curved and uneven, appearing "wavy-edged"
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Identification and Control Methods for Common Diseases of Edible Fungi
Brown rot, also known as white rot, wet bubble disease, etc. When diseased mushrooms are infected at a young stage, they cannot further differentiate and develop, and later form deformed mushrooms, often with a layer of "white fuzz" growing on the surface, which is the mycelium of the pathogen. When the temperature is above 20°C, over 4 to 5 days, the diseased mushrooms darken in color, then rot, exuding a brown (soy-sauce-like) liquid and becoming decayed and foul-smelling; below 20°C, this process takes longer. When the fruiting body is infected at the mid stage, brown lesions appear on the cap, the stipe becomes swollen and thick, and then the mushroom body softens. Cutting open the diseased mushroom reveals that its interior changes from white to grayish-white
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Identification and Control of the Mushroom Mite Histiostoma feroniarum
Histiostoma feroniarum belongs to the family Histiostomatidae, genus Histiostoma. This mite is a cosmopolitan pest mite; wherever the environment is suitable for edible mushroom growth, its presence and occurrence are possible. (1) Damage characteristics: Histiostoma feroniarum can infest mushroom spawn bottles, reducing the finished product rate; it infests mushroom beds, affecting yield, and is one of the pest mites of cultivated mushrooms. When mushroom bed humidity is too low or food is scarce, it produces large numbers of reddish-brown active hypopus (dormant) forms, which gather on the bed surface or on fruiting bodies, and disperse by drifting in light breezes or
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Symptom Identification and Control Methods of Soft Rot in Edible Fungi
Damage symptoms: White bead-like mycelial networks first appear on the surface of the casing soil on the bed. If not treated promptly, they quickly spread and turn water-red. Infection of the fruiting body starts from the stipe and extends to the cap, initially appearing water-soaked, then gradually turning brown, softening, and eventually rotting. Classification: A fungal disease caused by Verticillium dendroides. Disease characteristics: The casing soil carries the pathogen, which spreads mainly through airflow and water droplets in the mushroom house. Control methods: Strictly disinfect the casing soil to cut off the source of infection. When it occurs locally, spray a 2%-5% formaldehyde solution or 800 times
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How to identify contaminant fungi in edible mushroom cultivation? Simple identification methods to share
During the cultivation of edible mushrooms, various harmful organisms and abiotic disturbances often occur. Mushroom growers all consider contaminant fungi to be a major enemy in production, and they must be recognized and prevented in advance, with targeted control, in order to ensure a good harvest. 1. Competitive contaminant fungi are mainly some saprophytic fungi that compete with edible mushrooms for nutrients, water and oxygen in the substrate, especially in the early stages of cultivation management when they are more likely to invade the mushroom blocks, secrete toxins, and inhibit the expansion and spread of the edible mushroom mycelium. 2. Infectious and non-
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Identification and Control Methods of Common Oyster Mushroom Diseases
Why do some oyster mushrooms grow small white lumps in the later stage of growth? This occurs more in black varieties and rarely in grayish-white varieties. The same cultivation method and substrate were used. Why does this happen? How should this contaminant be controlled? Every stage of oyster mushroom production can suffer from contaminant contamination, and it must be controlled promptly. The common contaminants are mainly the following: (1) Bacteria mostly occur on the slant of mother cultures, while the harm to stock cultures and cultivation cultures is relatively mild. Bacterial contamination is characterized by rapid reproduction, generally becoming visible 10 to 24 hours after inoculation.
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Symptom Identification of Several Major Diseases of Oyster Mushrooms
(1) White rot: The pathogen is Mycogone perniciosa, which harms the fruiting bodies. After the mushroom bodies are contaminated, it causes rot and produces a putrid odor. (2) Brown spot disease: The pathogen is Verticillium fungicola. After its spores infect the fruiting bodies of oyster mushrooms, brown spots first form on the caps, gradually expand, and produce grayish-white depressions. After the mushroom bodies are damaged, they become deformed, and the stipes become swollen or curved, but they do not rot, and finally dry up and die. (3) Mucor soft rot: The pathogen is Mucor. It generally occurs when the fruiting bodies are fully mature
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Identification and Control Methods of Slime Mold Diseases in Oyster Mushrooms
Symptoms The slime mold colonies harming oyster mushrooms are white, and during the vegetative growth stage they mostly spread outward in a feather-like pattern, generally difficult to distinguish from oyster mushroom mycelium. In the middle and late stages of oyster mushroom growth, the slime mold develops rapidly. When the mushroom bed has high humidity, the slime mold spreads from the bottom layer of the substrate to the surface layer, beginning to appear on the surface of the mushroom bed as bright orange-yellow gelatinous filaments, which then rapidly produce powdery gelatinous masses, namely the slime mold spores entering the reproductive stage. The gelatinous masses spread rapidly from the stipe to the cap of the oyster mushroom, gradually enveloping the entire fruiting body and causing the fruiting bodies
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High-efficiency cultivation technique for oyster mushrooms without spraying water for humidification
The narrow-shed no-spray high-efficiency cultivation method for oyster mushrooms combines the advantages of the soil-burial cultivation method and the mushroom-wall cultivation method, making the cultivation and management of oyster mushrooms simpler, with excellent quality and high yield. The method is: after harvesting the first flush of mushrooms, remove the mushroom blocks from their bags and build a mushroom wall around the four earthen walls of the shed. The outer ends of the wall are bonded block-to-block with sealing mud, the interior of the wall is entirely filled with nutrient soil, and a water trough is built on top of the wall for replenishing water and nutrients. The advantages of this method are mainly five: (1) Before building the mushroom wall, first let the blocks produce one flush of mushrooms; the wall built from already-shrunk blocks does not deform, does not dry-crack,
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