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Occurrence Patterns and Control Methods of Major Tea Plant Pests During the Summer Tea Season
Due to the low-temperature rain and snow weather last winter and this spring, the overwintering generation of tea pests this year had a low population base and a delayed occurrence period, and damage during the spring tea season was relatively light. However, summer weather is more suitable for the occurrence and damage of pests and diseases, so monitoring and control work must be carried out effectively. The occurrence level of the camellia spiny whitefly was lighter than last year, but pest numbers in some tea gardens still exceeded the control threshold. According to a survey by the Songyang County Plant Protection Station: the peak period of overwintering adult camellia spiny whiteflies was April 15, with an average of 17.4 insects per 100 leaves, later and fewer than last year (April 5).
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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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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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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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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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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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Control Methods for Dacne japonica Infestation on Lingzhi (Ganoderma lucidum)
Dacne japonica Crotch, also known as the small fungus beetle or red concave fungus beetle, belongs to the order Coleoptera, family Erotylidae. 1. Morphology and habits: The adult is 3-4.5 mm long, elongated oval, glossy. The head is yellowish-brown; the antennae have 11 segments and are brown. The compound eyes are large and spherical. The pronotum is wider than long, yellowish-brown, darker in the middle. Each elytron bears one square black spot on the inner basal margin; the basal half of the elytra is yellowish-brown and the apex is black. The legs are yellowish-brown and relatively slender. From the shoulder angle diagonally toward the median suture there are red-yellow markings that meet, and the red-yellow
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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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What to Do When Oyster Mushrooms Get Soft Rot Disease? Detailed Prevention and Control Methods
Symptom manifestation is mainly shown by the white mycelium of oyster mushrooms growing in a spider-web-like pattern on the surface of the bed, rapidly spreading, covering the bed surface, and surrounding the fruiting bodies. Once the base of the fruiting body is surrounded by mycelium, it becomes infected; the pathogen spreads upward along the stipe, and finally the fruiting body stops growing, its color becomes dull, and it rapidly softens, turns yellow, turns brown, and then rots. Prevention and control methods: First, strictly treat the mushroom shed. Before the mushroom shed is put into use, spray it with Mushroom Disease Eliminator King, keep it sealed for two days, then spread lime powder on the ground at 250 grams per sq m. Second, during the spawn-running period
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