-
Symptoms and Control Methods of Hydrangea Anthracnose
[Distribution] Tianjin, Hebei, Liaoning, Henan, Guangdong, Shanghai, Jiangsu, Zhejiang, Fujian, Sichuan. [Symptoms] Mainly occurs on leaves. The lesions initially appear as small brown spots, which after expanding become circular, with edges from purplish-brown to blue-black, and centers from light brown to grayish-white, with concentric rings and whorled small black dots protruding. Lesions vary in size, the small ones only 1 mm, and the large ones up to 10 mm. [Pathogen] The pathogen is a fungus, Colletotrichum hydrangeae (Colletotrichurnhy-dr
-
Symptom Identification and Control Methods of Hydrangea Viral Disease
Also known as hydrangea ringspot virus disease and hydrangea mosaic disease. Found sporadically in Beijing, Henan, Hebei and other places. It harms hydrangeas, making the plants short and small, with small and pale flowers, reducing their ornamental value. In some places, horticultural cultivation appreciates its diseased beauty, and it is called variegated-leaf hydrangea. Symptoms are a systemic disease; infected plants are thin and weak as a whole, with pale colors in branches, leaves and flower clusters, appearing pale green under a light pinkish-white covering; the leaves have irregular pinkish-white patches mixed into the pinkish-green, with clear boundaries separated by leaf veins; the leaf margins are white. In early spring and winter in the greenhouse
-
Hydrangea Pest and Disease Control Methods and Key Technical Points
When humidity is high, temperatures are high, and ventilation is poor, the plant is prone to aphid damage. Control methods: ventilate promptly. In severe cases, spray with 1500-fold diluted Mieyaling solution. In mild cases, they can be removed by hand with a brush. Spraying with cigarette butt or chili pepper water is also effective. For its control methods, refer to those for roses.
-
What are the main pests and diseases of the Ferula mushroom? Detailed explanation of control methods
I. Infection routes of pests and diseases 1. Natural spread During the process of spawn production and cultivation of edible fungi, the slightest negligence allows pathogen spores to invade the spawn and culture bags, while pests lurk in waste materials, weeds and dead branches and fallen leaves around the mushroom house, developing, laying eggs and reproducing, seriously harming edible fungus production. 2. Seed-borne infection The mother spawn, stock spawn or cultivation spawn used, without strict inspection, is mixed with contaminating fungi and pests; using such spawn for production leads to complete infection. II. Diseases and their control 1. True
-
What are the main pest and disease control methods for mushroom sheds?
With the development of the vegetable basket project, the demand for edible fungi has increased accordingly, but pest damage inside mushroom sheds has created major obstacles to the development of edible fungi. To alleviate this contradiction, the main pests in mushroom sheds and their control methods are introduced here. 1. Mushroom flies The larvae, also called fungus maggots, mainly feed on the fruiting bodies, creating tunnels that affect quality, and the wounds they cause are also very easily infected by pathogens, leading to rot. Different methods should be used to control mushroom flies at different stages. If large numbers of fungus maggots occur before mushroom emergence, dichlorvos can be used at 0.90 kg
-
Detailed Explanation of Chemical Control Methods for Oyster Mushroom Pests and Diseases
1. Lime: When fermenting the raw materials, add 4%-5% quicklime powder for high-alkali treatment to improve disease resistance; treat the mushroom house walls and mushroom racks with concentrated limewater; after harvesting mushrooms, spray with the supernatant of limewater, which helps prevent disease and increase yield; when there is localized damage from wood (green) mold, sprinkle lime powder on the contaminated areas to control its spread, etc. 2. Sulfur: Before bringing materials into the mushroom house, fumigate and disinfect with sulfur at multiple points, at a dose of 5 grams per cubic meter. 3. Formaldehyde: When mushroom bags are locally infected with Trichoderma and other contaminating fungi, apply a 2% formaldehyde solution.
-
Oyster Mushroom Pest and Disease Control Methods and Key Technical Points
In oyster mushroom cultivation, pests and diseases are major obstacles. Recognizing and promptly controlling them is of great significance to normal production. If pests and diseases are discovered and measures are not taken in time, they can seriously affect oyster mushroom yields, sometimes causing total crop failure. Therefore, one should select fine and highly resistant strains, strengthen scientific management, and create environmental conditions favorable to mushroom growth but unfavorable to pest and disease reproduction, so as to prevent trouble before it occurs. Some common pest and disease control methods are introduced below: 1. Diseases. Diseases commonly fall into the following two categories: (1) During the cultivation process, environmental conditions and man
-
Common pest and disease control methods for oyster mushrooms
Mycelial overgrowth: When the relative humidity of the air is too high, a large amount of clumped aerial mycelium grows on the surface of the mycelium, affecting mushroom formation. The solution is to reduce humidity and increase ventilation. Rust spots: When too much water is sprayed, air humidity exceeds 95%, and ventilation is poor, brown spots can appear on both the caps and stipes; at this time, ventilation should be increased and humidity reduced. Withering: When the substrate is too dry and the air humidity is too low, mushroom buds or fruiting bodies stop growing, shrivel and dry out, and may even die or rot. Water should be replenished reasonably, relative humidity adjusted, and ventilation properly managed. Fruiting
-
How to control edible mushroom pests? Eight methods to help you deal with them skillfully
In the process of edible mushroom production, the control of pests (mushroom gnats, mushroom midges, springtails, mites, nematodes, etc.) is a headache for mushroom growers. Now I would like to introduce several methods for skillfully controlling edible mushroom pests to mushroom grower friends, for their reference. 1. Use fermented or sterilized substrate cultivation as much as possible to control the insect population in the cultivation site; the cultivation beds for button mushrooms (Agaricus bisporus) should use fermented substrate. When mixing the substrate, add 0.5% salt, 3% lime, 5%-8% plant ash, etc., which has a good insect-repellent and preventive effect. 2. Before the mushroom bags or substrate are brought into the shed, empty-shed disinfection should be carried out: use 0
-
How to reduce pests and diseases in edible mushrooms? Practical control methods shared
The main insect pests of edible mushrooms include mushroom gnats, mushroom flies, springtails, mites and nematodes, and the integrated control measures are as follows. Keep the mushroom yard clean. Before cultivation, the mushroom house should be thoroughly cleaned and evenly sprayed with an 800-fold trichlorfon or dichlorvos solution. For outdoor mushroom cultivation, clear the weeds around the cultivation site and spray the soil and the surrounding area with a 250-fold trichlorfon solution. Prevent adults from entering the room. For indoor cultivation of edible mushrooms, nail 60-mesh fine gauze over doors, windows, ventilation holes, etc., to prevent adult mushroom flies, mushroom gnats and other pests from entering the room and causing damage. Trap and kill adults
条件筛选