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What are the prevention and control methods for abdominal distension and ulceration disease in large yellow croaker?
(1) Pathogen According to reports from Japan, it is Vibrio alginolyticus; but another source says it is Edwardsiella. (2) Symptoms The stomach sac of diseased fish is especially swollen and enlarged, and in some fish the dorsal and ventral walls rupture from the swelling, with the entire stomach sac detaching from the fish body. Large numbers of diseased fry float scattered on the water surface, unable to feed, spin in circles for several days, then sink and die. Larvae at 15-20 days of age are most susceptible, showing a peak mortality period. (3) Prevention and control methods Increase the water exchange rate, improve the rearing environment, avoid feeding Artemia nauplii alone, feed copepods earlier, strengthen the nutrition of larvae and juveniles, and strictly control water quality.
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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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Control Methods and Technical Key Points for Scaly Leg Mite Disease in Chickens
Scaly leg mite disease in chickens is a condition caused by sarcoptic mites, often presenting as two forms: depluming itch and scaly leg. 1 Pathogen and Symptoms The pathogen of depluming itch in chickens is the scaly leg mite (Knemidocoptes mutans), which is round or oval in shape and about 0.3 mm long. This mite mostly invades the skin along the feathers and parasitizes the base of the feathers, causing inflammation. Lesions are mostly seen on the back, wings, rump, and thighs of chickens, with severe localized itching and feather loss, hence the name depluming itch. Affected chickens peck and pull at their feathers, causing feathers to fall out, the skin to become red, and
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How to prevent swine erysipelas? Prevention and control methods every pig farmer must read
(1) Eliminate the source of infection: regularly disinfect pig pens by spraying with 10% carbolic acid emulsion, at least 2 to 3 times a year. (2) Eliminate transmission factors: the cause of disease in many pig farms is buying in pork from outside, so breeding and raising your own pigs is the key to preventing swine erysipelas. (3) Improve the pigs' disease resistance: give pigs reasonable feeding and management, feed more green fodder, allow proper exercise, clean out the bedding and pens every day, check the pigs' health status every day, and isolate and treat sick pigs promptly when found. (4) According to
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Identification and Control Methods for the Fungus Gnat Pest of Lingzhi Mushroom
The fungus gnat (MycophilafungicolaFelt), also known as the mushroom-loving gall midge, or mushroom gnat. It belongs to the order Diptera, family Cecidomyiidae. 1. Morphology and habits: The adult is small, about 1 mm long. The head, thorax and back are dark brown, while the rest is grayish-brown or orange-red. The head is small, the compound eyes are large and connected left and right, and the antennae are slender and bead-like, with 11 segments, each segment bearing whorls of radial fine hairs; the male's antennae are longer than the female's, and the wings are broad and hairy. The female's abdomen tapers to a pointed tip, while the male's abdomen has a pair of pincer-like claspers. The egg is kidney-shaped, about 0.3 mm long, milky white to light brown.
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Control Methods and Key Technical Points for Pests and Diseases of Honeysuckle
Honeysuckle, also known as silver flower or Japanese honeysuckle flower, is the dried flower bud of plants in the Caprifoliaceae family and several plants of the same genus. It has the function of clearing heat and detoxifying, and is suitable for diseases such as seasonal febrile diseases with fever, wind-heat common cold, sore throat, pneumonia, dysentery, and carbuncles, swellings, sores and ulcers. It is a commonly used traditional Chinese medicinal material, with annual national sales reaching 5.5 to 6 million kg. Honeysuckle is produced in most provinces and regions across the country, among which Shandong, Henan and Guangxi have the largest output and the best quality. Honeysuckle has relatively many pests and diseases, and doing a good job of prevention and control is the key to increasing honeysuckle yield and ensuring market supply
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Occurrence Patterns and Integrated Control Methods of Pests and Diseases in Goji Berry
Goji berry is a deciduous shrub of the genus Lycium in the Solanaceae family. Its fruit is called goji berry (Lycii Fructus), and its root bark is called Digupi (Lycii Cortex); both can be used as medicine. The tender stems and leaves are eaten as vegetables. It is distributed throughout China, mostly in the wild. The related species Lycium barbarum (Ningxia goji) is mostly cultivated; its fruit is called Xi goji or Gan goji and is used medicinally, mainly produced in Ningxia, Gansu and Inner Mongolia. Goji berry suffers from pests and diseases at every stage of growth, causing great economic losses to production. The occurrence and control methods of goji berry pests and diseases are introduced as follows: 1 Diseases 1.1 Black fruit disease (anthracnose) Main
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Comprehensive Pest and Disease Control Methods and Technical Key Points for Goji Berry
Goji berry, as a traditional Chinese medicinal herb, not only has high medicinal value, but its fruit, leaves, stems, and roots can also be eaten or drunk. With the improvement of people's living standards, in recent years more and more varieties of goji berry wine, pastries, and other products have been developed, and the usage is also increasing. The commonly occurring pests and diseases of goji berry mainly include: aphids, goji berry leaf beetles, whiteflies, cotton bollworms, gall mites, and powdery mildew, anthracnose, leaf spot disease, viral disease, etc. The comprehensive control technical measures are introduced as follows. Control principles: prevention first, combining prevention and control. Strategically, focus on healthy cultivation and biological control,
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Common Pests and Diseases of Goji Berry and Their Control Methods
1. Goji berry black fruit disease, also known as anthracnose. It damages fruits and leaves. ① When fruits are affected, circular irregular brown slightly sunken lesions first appear on green fruits, with small black dots arranged in concentric rings, and some lesions show orange-red sticky substance. In the later stage, diseased fruits turn black, become mummified and drop early. ② When leaves are affected, initially yellow small spots appear, later expanding into irregular lesions with reddish-brown edges, and in the later stage small black dots appear on the lesions, some of which rupture and perforate. The disease is severe in July to August when temperature is high and humidity is high. Control methods: ① During winter pruning,
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Licorice Pest and Disease Control Methods and Key Technical Points
(1) Rust: occurs from May to June, damaging leaves. Control methods: ① Gather and burn diseased branches; ② Spray 90% nabam at 400 times dilution in the early stage of the disease. (2) Brown spot: occurs from May to June, damaging leaves. Control methods: ① Gather and burn diseased branches; ② Spray 1:1:100-160 Bordeaux mixture or 70% thiophanate-methyl wettable powder at 1500-2000 times dilution in the early stage of the disease. (3) Powdery mildew: occurs from May to June, damaging leaves. Control method: Spray 0.2-0.3 degrees Baume lime sulfur
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