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Identification and Control Methods of Physiological Diseases of Reishi Mushroom
Due to the action of abiotic factors, the physiological metabolism of reishi mushroom is often disrupted, leading to disease. Symptoms After physiological diseases occur, deformed mushrooms grow, and the mycelium stops growing or grows poorly and shrinks, and excessive vegetative growth can also occur. Causes During cultivation, improper management leads to poor nutrition of the mushroom body; the temperature in the cultivation room is too high or too low, and ventilation is poor; the water content of the substrate is too high or too low, or the pH is unsuitable; lighting is inconsistent; the bed contains excessively concentrated harmful gases; pesticides and growth regulators are used improperly.
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Identification and Control Methods of Mucor Disease in Lingzhi (Reishi Mushroom)
Mucor mucedo (L.) Brefeld belongs to the subphylum Zygomycotina, order Mucorales, genus Mucor. It can infect edible fungi such as lingzhi (reishi mushroom), silver ear fungus, and oyster mushroom, and is a common contaminating fungus in mushroom cultures. It grows rapidly and occurs commonly. In severe cases, it can cause the entire culture to be discarded. Symptoms: Mucor can secrete organic acids and toxins that inhibit the growth of lingzhi mycelium. After the substrate is affected, the mycelium appears grayish-white and relatively thick, and grows rapidly. In the later stage, many yellow-white round small granules form at the tips of the aerial mycelium, which gradually turn black.
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Symptom Identification and Control Methods for Black Locust Trunk Rot
Symptoms: The disease affects the branches and trunks of young trees to large trees, causing branch dieback or death of the entire tree. In large trees, it mainly occurs at the base of the trunk, and in a few cases at the forks of upper branches and tips. When the base of a large tree is affected, there are no obvious external symptoms; when the bark is peeled back, the interior has already discolored and rotted, with a foul odor, and irregular brown to dark brown patches appear on the surface of the xylem. The lesions continuously expand, encircling the trunk for 1 full turn, causing the branches and trunk above the lesion to die, and the leaves immediately turn yellow and wilt. When the branch tips or the main stem of young trees are affected, the diseased tissue shows water-soaked rot, producing obvious canker lesions that are slightly sunken with purplish-brown edges
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Identification and Control Methods for the Peach Fruit Moth
Latin scientific name: Carposina niponensis Walsingham Distribution: Morphological characteristics: Adult body length 7-8 mm, wingspan 16-18 mm, grayish brown. The middle of the front wing's leading edge has a large blue-gray nearly triangular patch. The wing surface has 7 clusters of blue-brown obliquely erect scale hair tufts. The female's labial palps are longer, the male's shorter. Eggs are oval, red, with 2 or 3 rings of "corpse-shaped bristles" at the top. Larvae are 13-16 mm long, peach-red, with a brown pronotal plate. Young larvae are yellowish-white. No anal
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Identification methods and control measures for ginger blast
Ginger blast, also known as ginger rot or bacterial wilt, is the most damaging disease in ginger production, generally causing 20-30% losses, and in severe cases destroying the entire crop, and it continues to cause damage during storage, leading to rot. This disease can affect stems and leaves, but mainly damages the underground rhizome. It usually occurs first at the stem base near the ground and the upper half of the underground stem; the lesions are initially water-soaked, dull dirty brown, and the internal tissue gradually softens and rots, leaving only the outer skin. Pressing the diseased part by hand can squeeze out a dirty white, foul-smelling fluid; roots, when affected, also become yellow-brown and rot. After the rhizome is damaged, the underground
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How to Tell Male and Female Zebrafish Apart? A Detailed Guide to Sex Identification and Breeding Methods
Telling male and female zebrafish apart is not difficult: male zebrafish have a slender body, large fins, a yellowish body color, a brownish-yellow anal fin, and prominent stripes; females have a more plump body, a paler, bluish body color, a pale yellow anal fin, and an obviously swollen belly during the egg-bearing period. Zebrafish are egg-laying fish and reach sexual maturity at 4 months of age; generally, 5-month-old fish are better for breeding. Zebrafish are relatively easy to breed. The breeding water requires a pH of 6.5-7.5, a hardness of 6-8, and a water temperature of 25-26°C. Zebrafish most prefer
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Identification and control methods of the tea shot-hole borer
The adult and larval stages of the tea shot-hole borer both bore into the branches and trunks of lychee and longan, with branches 1-2 cm in diameter being the most heavily affected, and numerous nearly circular small entrance holes visible on the exterior. If an affected branch is cut open, several nearly ring-shaped horizontal small galleries will be found in the xylem, and dark brown beetles smaller than a grain of rice, or milky white legless larvae and pupae, are commonly seen. Because the transport of water and nutrients in the affected branches is blocked, the trees weaken in vigor and often produce dead branches and broken branches, and entire young trees have even been found killed by the damage. In recent years the tea shot-hole borer
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Identification methods and control techniques for the tea aphid
The tea aphid, also known as the citrus two-tailed aphid, belongs to the order Homoptera, family Aphididae. It sucks sap and causes damage on young shoots, buds and leaves. When tea plants are severely affected, the young shoots, buds and leaves shrivel and curl, growth stops, yield is affected and quality is reduced. Dry tea made from damaged buds and leaves is dark in color, with turbid liquor and a fishy odor, and its color, aroma and taste are all extremely poor. The aphid's excrement, "honeydew," contaminates the buds and leaves and induces sooty mold. The winged adult tea aphid is about 2 mm long, yellowish-brown and glossy. The base of each antennal segment is pale yellow. The middle vein of the forewing forks into two branches. There are 4 pairs of black spots on the dorsal side of the abdomen. Winged nymphs are brownish-brown with milky-white wing buds.
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Identification and Control Methods for the Tea Bug and the Yellow-Spotted Bug
Distribution area: Morphological characteristics: The adult tea bug (Halys dentata) is about 15 mm long and 8-9 mm wide. The body is flattened and oval. Grayish-brown, with a slight purplish-red tinge. The antennae have 5 segments; segment 2 is longer than segment 3; both ends of segment 4 and the base of segment 5 are yellow. The thorax dorsum and forewings are densely covered with dark brown punctures. The eggs are cup-shaped and grayish-white. 20-30 eggs are arranged into an egg mass. The nymph is slightly flattened and round, dark brown, with dark spots on its back. The adult yellow-spotted bug (Erthesina fullo) is 20-30 mm long and 8-11 mm wide. Grayish-brown, with the body dorsum and forewings densely
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Identification and Control Methods of Paecilomyces lucidus Disease
Paecilomyces belongs to the subphylum Deuteromycotina, class Hyphomycetes, order Hyphomycetales, family Hyphomycetaceae, genus Paecilomyces. The species commonly found in production is Paecilomyces variotii (p.varictBainier). 1. Morphological characteristics: The hyphae are white, transparent, and septate. The colony is earthy yellow and is often mistaken for Aspergillus flavus, commonly called yellow mold by mushroom growers. Conidiophores arise from aerial hyphae or cord-like hyphae; the phialides are slender and elongated, swollen at the base, tapering to a pointed tip, often curved, single to broom-like branched. Conidia are short cylindrical to long elliptical, smooth
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