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What are the methods for controlling diseases and pests of Gastrodia elata?
I. Diseases and their control 1. Causes of the disease. The primary pathogens of Gastrodia elata diseases are mainly other basidiomycetes among the fungi besides Armillaria mellea, which infect the fresh wood and fungal wood symbiotic with Gastrodia elata's Armillaria mellea, competing with Armillaria mellea for nutrients. In severe cases, they not only inhibit the growth of Armillaria mellea and reduce the yield of Gastrodia elata, but also directly infect the tubers of Gastrodia elata, causing soft rot of Gastrodia elata (called tuber soft rot) or rotting death (called tuber rot). This disease mostly attacks and causes damage when the environment is poor, such as high temperature and high humidity, poor aeration and other conditions unfavorable to the growth of Gastrodia elata, causing the skin of the Gastrodia elata tuber to turn yellow and wither,
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Control Methods for Various Pests and Diseases of Schisandra
(1) Powdery mildew and black spot are two common diseases of northern schisandra (Schisandra chinensis), generally occurring in early June. Control methods: The onset periods of the two diseases are similar. In late May, spray once with a 1:1:100 equal-strength Bordeaux mixture for prevention. If no disease occurs, spray once every 7-10 days. For powdery mildew, use 0.3-0.5 degree lime sulfur mixture, or fenarimol or thiophanate-methyl wettable powder at 800 times dilution; for black spot, use mancozeb 50% wettable powder at 600-800 times dilution. If both diseases
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Methods and Technical Key Points for the Prevention and Control of Pests and Diseases in Schisandra chinensis
(1) Leaf blight starts at the leaf tip or margin in the early stage of the disease, infects the entire leaf surface, causing it to turn yellow, wither and drop; in severe cases, the fruit clusters drop. Prevention and control methods: strengthen field management and ensure good ventilation and light penetration. In the early stage of the disease, spray with 1:1:100 Bordeaux mixture, once every 7 days, for several consecutive applications. (2) Leaf roller larvae cause damage, resulting in rolled leaves, affecting fruit growth and even causing fruit drop. Prevention and control methods: use 50% phoxim 1500-fold solution or 50% phosphamidon 1500-fold solution or 40% dimethoate 1000-fold solution or 80% trichlorfon
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Identification methods and control techniques for diseases and pests of Schisandra chinensis
Diseases I. Leaf blight 1. Symptoms. Caused by infection with the leaf blight pathogen of Schisandra chinensis, it is a commonly occurring disease. It is prone to occur from late May to early August when temperatures are high, rain is frequent and ventilation is poor. The disease first starts from the leaf tip or leaf margin, with dark brown lesions appearing, gradually spreading downward and expanding to the entire leaf, and finally causing the whole leaf to turn dark brown, dry up and fall off. The fruit then shrinks, becoming early fruit drop. 2. Control. First, choose a plot with good ventilation. Second, strengthen field management, carry out pruning reasonably, and avoid
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Methods and Technical Key Points for Preventing and Controlling Pests and Diseases of Gastrodia elata
I. Diseases are mainly infections by miscellaneous fungi such as green mold, blue mold, and Mucor. When they occur severely, they can inhibit the growth of Armillaria mellea and can also infect Gastrodia elata tubers, causing rot. Prevention and control methods: (1) Choose well-drained plots for planting; (2) Select high-quality fungal wood; (3) Control temperature and maintain moisture during cultivation; (4) Fill the gaps between fungal wood with humus soil or rice grains. II. Pests mainly include white grubs, mole crickets, golden leaf beetles, termites, rats, and damage by livestock and poultry. Prevention and control methods: (1) Light trapping to kill; (2) Use 90% trichlorfon at 1000 times or 50% phoxim at 1000 times
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Identification and Control Methods of Diomea cremata
Diomea cremata Butler belongs to the family Noctuidae of the order Lepidoptera. It is one of the looper caterpillars and is one of the important pests damaging edible fungi such as lingzhi (Ganoderma lucidum), oyster mushrooms and wood ear fungus, and it occurs fairly commonly in China. The damage is characterized mainly by feeding on the lingzhi cap and flesh, leaving curved tunnels at the damaged sites. It also leaves notched holes on the fruiting bodies, reducing the commercial value of lingzhi. Morphological characteristics: adult body length 11 mm, wingspan 25-26 mm. The male is dark purplish brown, and the head, thorax
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Symptoms, Identification, and Control Methods of Pinellia ternata Root Rot
It mostly occurs in hot and humid seasons; the underground tubers rot, and the above-ground parts turn yellow, wilt, fall over, and die. Control methods: (1) Pay attention to drainage after rain. (2) In the early stage of the disease, drench the planting holes with 5% lime milk. (3) Control underground pests.
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What are the control methods for Panax notoginseng pests and diseases?
1. Yellow rust: both sides of the leaves are covered with rust powder, and in severe cases the leaves drop off. Once diseased plants are found, dig them out immediately; in the early stage of the disease, spray with 0.2 degrees Baume lime sulfur mixture, once every 7 days, for 2 to 3 times in a row. 2. Anthracnose occurs under rainy and excessively wet conditions. After seedlings or mature plants are infected, brown spots appear on the stems and leaves, later merging into large spots with yellow-green edges, and finally the plants rot and die. Adjust the light transmittance of the shade shed so that the light transmittance is uniform; in the early stage of the disease, spray with 1:1:200 Bordeaux mixture or 65% zineb 300 times dilution. 3
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Identification and Control Methods for Common Diseases and Pests of Panax notoginseng
(1) Damping-off, also known as "rotten foot plague." The pathogen is a type of imperfect fungus among the fungi, harming seeds, seed sprouts and seedlings. Affected seeds rot into a milky white juice-like state, affected seed sprouts turn dark brown and die; affected seedlings show a dark brown ring-shaped depression at the base of the false stem (leaf stalk); seedlings bend over and die. Control methods: ① Before sowing, disinfect the soil with carbendazim or lithospermum liquid. ② Promptly pull out diseased plants when found, spread lime powder around the diseased plants, and spray with 50% thiophanate-methyl 1000-fold solution or 50% methyl
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Control Methods for Common Pests and Diseases of Panax notoginseng
Panax notoginseng belongs to the genus Panax in the family Araliaceae. It is a perennial herbaceous plant and ranks second only to ginseng in the production of Chinese medicinal materials. Common pests and diseases include damping-off, anthracnose, root rot, phytophthora blight, aphids, red spider mites, and scale insects. 1. Damping-off: It occurs mostly in the high-humidity, low-temperature seasons of April to May, damaging the base of seedlings. In severe cases, seedlings die in patches. Infected seeds and seed buds turn blackish-brown and rot. After seedlings are affected, water-soaked yellowish-brown streaks appear at the base of the pseudostem (leaf petiole). As the disease progresses, these turn dark brown, and the diseased area then constricts,
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