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Causes and Control Methods of Dry Shrinkage of the Central Leaves of Hot Peppers
At present, temperatures are gradually dropping, with occasional foggy weather, causing frequent diseases in hot peppers grown in greenhouses. Recently, vegetable growers have often reported problems encountered when growing hot peppers. The problems that have occurred with hot peppers recently are summarized below for the reference of fellow vegetable growers: Dry shrinkage of the central leaves of hot peppers. A vegetable grower from Wutai, Shouguang City, called to ask about dry shrinkage occurring in the central leaves of the hot peppers being grown, and whether it was a viral disease. Dry shrinkage of the central leaves of hot peppers may be caused by a viral disease. Hot
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What to Do When Wheat Seedlings Turn Yellow? Common Causes and Control Methods
When wheat grows into the winter and spring seasons, the seedlings often turn yellow or even die, and applying fertilizer alone cannot make them turn green again. There are several types of yellowing in wheat seedlings, and if remedial measures are not taken in time, they can cause serious reductions in wheat yield. Yellowing from pests: yellowing of leaves caused by wheat aphids and wheat mites sucking leaf sap, occurring mainly around the overwintering period. Per 667 sq m, use 65-75 ml of 40% omethoate emulsifiable concentrate mixed with 50 kg of water for spray control. Yellowing from disease: wheat sheath blight damages
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Identification and Control Methods of the Wheat Ear Moth
Scientific name Apamea sordens (Hufnagel), belonging to Lepidoptera, Noctuidae. Also known as the wheat ear worm. Distributed in Inner Mongolia, Gansu, Qinghai and other provinces. Hosts include wheat, barley, highland barley, wheatgrass, and Iris lactea. Damage characteristics: newly hatched larvae first feed on the floral organs and ovary of the ear, and a few feed on the tender inner surface of the glumes; after consuming these they move to cause damage elsewhere. After the 2nd-3rd instar they feed and hide inside the grains; after the 4th instar the larvae move to the flag leaf, spin silk to bind the leaf margins into a tube shape, and after sunset seek out wheat ears to feed.
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Control Methods for Bacterial Gill Rot Disease (Flexibacteriosis) in Koi
I. Symptoms: The gills of diseased fish rot and carry some sludge. Sometimes the tissue at the tips of the gills rots, causing the gill edges to become incomplete and ragged; sometimes one or more spots on the gills rot, but not at the edges. The inner membrane skin of the operculum (gill cover) becomes congested, and sometimes breaks down and corrodes into a roughly circular transparent area, commonly known as "open skylight." Because the gill tissue is destroyed, the diseased fish has difficulty breathing and often swims near the water surface in a floating-head manner. In severely affected fish, the floating-head phenomenon persists even after changing to clean water. II. Pathogen: Cytophaga columnaris (columnar flexibacterium), synonym: Myxococcus piscicola.
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Common Spring Fish Disease Prevention and Control Methods and Technical Key Points
1. Gill rot disease. Pathogen: Myxococcus. Symptoms: The diseased fish has a darkened body color, stays away from the school, and stops feeding. The gill filaments are rotten and covered with mud, the inner epidermis of the operculum is congested, and it is often corroded into round transparent small holes, commonly known as "open skylight". After grass carp gill lamellae are infected with Myxococcus, the tissue in the affected area shows varying degrees of rot, ulceration, and invasive hemorrhage. Cultured fish such as black carp, grass carp, and bighead carp can all develop this disease, especially causing the greatest harm to grass carp. Below a water temperature of 15°C, it is generally rare; it begins to become epidemic at around 20°C. Prevention: At a water depth of 1
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Detailed Explanation of Control and Treatment Methods for Other Pig Diseases (Part Two)
(7) Anestrus Anestrus, commonly known as failure to come into heat, refers to gilts aged 6-8 months or sows that have still not come into heat 15 days after weaning. Prevention and treatment: 1. Strengthen management, pay attention to breeding pig nutrition, prevent breeding pigs from being too fat or too thin, and maintain good body condition; 2. For delayed puberty in gilts, transfer them to other pens or locations, increase contact with boars, and feed some green fodder. Also, a single subcutaneous or intramuscular injection of pregnant mare blood (blood from mares 40-80 days pregnant) 10-20 ml or PMSG (
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Damage Caused by Cutworms to Reishi Mushrooms and Its Control Methods
Cutworms belong to the order Lepidoptera, family Noctuidae. They are not only an important pest of agricultural and forestry crops, but also a common pest in the cultivation of edible fungi such as reishi mushroom, silver ear fungus, wood ear fungus, and oyster mushroom. They are widely distributed, but the degree of damage varies. They occur more frequently in outdoor open-field sunken-bed cultivation and plastic greenhouses. Damage characteristics: The larvae feed on the mycelium of reishi mushrooms, inhibiting mycelial growth and affecting fruiting body formation, which reduces reishi mushroom yield and lowers quality. Morphological characteristics: Adult body length 16-23 mm, wingspan 42-54 mm
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Damage Symptoms and Control Methods of the Ganoderma moth
The Ganoderma moth, scientific name Hapsifera barbata Christoph, belongs to the order Lepidoptera, family Tineidae. Also known as the wood-boring worm, its larvae bore into and feed on polypore fungi. In recent years in the Jiangsu area, it has been found causing damage on the culture media and fruiting bodies of log-cultivated Ganoderma, Armillaria mushroom logs, substitute-substrate Ganoderma and oyster mushrooms. Damage characteristics: on soil-cased Ganoderma, the moth bores into the fruiting body, feeds on the contents, and excretes frass onto the surface of the fruiting body; in severe outbreaks, it can eat the fruiting body completely bare. Morphological characteristics: adult body length 5-
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Harm and Control Methods of Drosophila melanogaster on Ganoderma lucidum
Drosophila melanogaster belongs to the order Diptera, family Drosophilidae. It is mainly distributed in the southern provinces of China, where it damages edible fungi such as Ganoderma lucidum, wood ear fungus and silver ear fungus, causing serious damage. Damage characteristics: the larvae of Drosophila melanogaster feed on Ganoderma lucidum mycelium and the growing substrate, causing the substrate to become waterlogged and rot, which can lead to bacterial invasion. The adults can carry molds, nematodes, mites and other pests and diseases, aggravating the occurrence of pest damage and seriously affecting the yield and quality of Ganoderma lucidum. Morphological characteristics: the adult is relatively small, about 4
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Identification and Control Methods of the Lingzhi Flat Bug
The flat bug Mezira membranacea branacea (Frab.) belongs to the order Hemiptera, family Aradidae. This insect was first discovered on log-cultivated lingzhi (Ganoderma lucidum) in Baoxi Township, Longquan City in 1994. In recent years, it has caused very serious damage in log-cultivated lingzhi production areas, with its range of damage expanding day by day, greatly affecting the yield and quality of log-cultivated lingzhi. The lingzhi flat bug is mainly distributed in Longquan, Zhejiang, China; Shaowu, Fujian, China; Nanning, Guangxi, China; Hainan Island, China; Taiwan, China; and Japan. Damage characteristics: The flat bug sucks the sap from lingzhi mycelium and primordia
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