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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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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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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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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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Identification and Control of the Oriental Mole Cricket, a Pest of Reishi Mushrooms
The oriental mole cricket (Gryllotalpa orientalis Burmeister) is commonly known as tugou or digou. It belongs to the order Orthoptera, family Gryllotalpidae. 1. Morphology and habits: The adult is 29-31 mm long. The head is conical and dark blackish brown. The pronotum is oval. The forewings are yellowish brown and can extend to the middle of the abdomen; the abdomen is spindle-shaped, blackish brown on the dorsal side and dull yellow on the ventral side, with a pair of relatively long cerci at the tip. The forelegs are specialized as digging legs, and the inner margin of the dorsal side of the hind tibia has 3-4 spines. The nymph resembles the adult in body shape and is gray
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Identification and Control Methods of the Slug Pest in Ganoderma lucidum
Slugs (SLuge), also known as shuiyanyou, bittichong, etc. They belong to the phylum Mollusca, class Gastropoda, order Stylommatophora, family Limacidae. The species that damage edible fungi include the wild slug (Agrioli-naxagrestisLinnaeus), the two-lined sticky slug (PhiolomycusbilimeatusBenson), and the yellow slug (LimaxflavusLinnaeus). 1. Morphology and habits (1) The wild slug has a soft body without an outer shell, dark gray
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Identification of Physiological Disorder Symptoms in Lilies and Their Prevention and Control Methods
Physiological disorders, also known as non-infectious diseases, refer to the disruption of normal physiological metabolic functions in the plant itself caused by factors other than pathogens. The causes of physiological disorders may be internal factors such as mineral element deficiency, tissue aging, or environmental factors such as temperature, light intensity, and abnormal gas composition. I. Leaf scorch: The typical symptom of leaf scorch is the formation of semicircular necrosis at the tip and margin of the leaf, sometimes also manifested as chlorosis or necrosis at the leaf margin, or yellow-green spots appearing on parts of unexpanded or expanded young leaves
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Detailed Guide to the Identification Methods for the Seven Species of Box Turtles
Currently, farming box turtles is one of the hotspots in turtle breeding. There are seven extant species of box turtles. Apart from the Malayan box turtle (Cuora amboinensis), which is a common species, the other six are rarely seen. To help farmers select breeding stock correctly, the identification methods for the seven species of box turtles are introduced below: 1. How box turtles differ from other turtle species. Box turtles are a specialized group among turtles. Their plastron is connected in the middle by a ligament, like a hinge, and is movable. After death, the ligament breaks, and the plastron splits into two parts, so people commonly call box turtles "broken-plate turtles."
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Identification and Control Methods of the Oriental Beetle
The Oriental beetle, also known as the black velvet chafer and the velvet chafer, belongs to the order Coleoptera, family Scarabaeidae. It is widely distributed with a diverse diet, and both adults and larvae can cause damage, harming more than 100 species of plants. Adults feed voraciously on several dozen species of garden plants, including poplar, willow, cherry blossom, white magnolia (Magnolia denudata), purple magnolia (Magnolia liliiflora), goldenrain tree, Chinese parasol tree, ornamental peach, crape myrtle, and photinia. Morphological characteristics: adults are 7 to 9 mm long and 4.5 to 6 mm wide, oval-shaped, narrow at the front and broad at the rear; newly emerged adults are brown, gradually turning dark brown or black, with the body surface
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Identification Methods and Technical Key Points for Tea Plant Breeding Materials
Observe the traits of breeding materials, analyze the characteristics and features of various variant materials, select the superior and eliminate the inferior according to breeding objectives, and finally develop new varieties through comparative trials. The identification content is divided into 3 aspects: yield traits, quality traits and resistance. The yield traits of tea plants are mainly reflected in sprouting density and bud-leaf weight, growth speed, length of growth period, regeneration capacity after picking, and recovery capacity after suffering disasters or wounds; quality traits are mainly reflected in the chemical composition, color, pubescence,
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