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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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What are the common mistakes in the use of fish medication?
In aquaculture, improper use of fish medication commonly causes losses. Fishermen and farmers should pay attention to this. 1. Treating without matching the disease. Some fishermen and farmers use bleaching powder, trichlorfon or copper sulfate for prevention and treatment no matter what fish disease occurs. Failing to prescribe the right medicine for the disease not only fails to prevent and treat the fish disease, but sometimes even has the opposite effect. 2. Using the same medication regardless of fish size. Some fishermen and farmers, upon seeing an outbreak of fish lice disease, spray 2.5% trichlorfon over the whole pond, yet do not realize that this
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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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Comprehensive Prevention Methods for Two Common Summer Diseases in Pigs
I. Piglet coccidiosis: This disease occurs mostly in late spring and early summer, mainly affecting suckling piglets aged 6-15 days. Drug prevention and treatment: 1. Toltrazuril: Piglets are given a single oral dose of toltrazuril at 3-6 days of age, at 20 mg per kg of body weight. 2. Sulfonamides: The therapeutic dose of sulfadimidine (sulfamethazine) is 20-25 mL per kg of body weight, once a day for 3 consecutive days. II. Swine streptococcosis: It occurs mostly in the warm season from May to November and is a zoonotic infectious disease. Prevention: per ton of feed use
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Detailed Explanation of Immunization Programs for Common Pig Diseases
I. Immunization program for growing-finishing pigs (1) 1 day of age: super-immunization with attenuated classical swine fever vaccine; before the piglet consumes colostrum after birth, inject one dose of attenuated classical swine fever vaccine first, and let the piglet consume colostrum 1-2 hours later; this is suitable for farms where classical swine fever frequently occurs; (2) 7-15 days of age: enzootic pneumonia vaccine; (3) 10 days of age: infectious atrophic rhinitis vaccine, intramuscular or subcutaneous injection; (4) 10-15 days of age: piglet edema vaccine; (5) 20 days of age: intramuscular injection of classical swine fever vaccine; (6) 25-
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What are the common varieties of wild reishi mushrooms? One article explains it clearly
Wild reishi mushrooms, because of their different varieties, have both similarities and individual characteristics in their pharmacological effects. The individual characteristics of the different common varieties of wild reishi mushrooms are introduced below: Flat-cap reishi. Documented names: tree tongue, tree tongue flat reishi, flat reishi, flat wood reishi, soap fungus ear, etc. Morphological characteristics: fruiting body perennial, sessile, woody, cap semicircular, nearly kidney-shaped or irregular. Functions: slightly bitter, neutral. Anti-cancer, mainly treats acute and chronic hepatitis, early-stage cirrhosis, esophageal cancer, lung cancer, liver cancer, nasopharyngeal cancer, pancreatic cancer, stomach cancer, breast
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Detailed Explanation of Common Problems in Phalaenopsis Cultivation
1. Key points for post-blooming care: After a Phalaenopsis blooms, it can still continue to bloom. Once the flowers fade, promptly cut off the flower stalk growing from the base of the plant to prevent nutrient consumption. 2. The flowers are pale and not vivid because the plant has been kept in a dark indoor place for a long time, resulting in poor ventilation and insufficient light. The frequency of ventilation must be increased, and sufficient light must be provided. 3. Drooping and soft leaves are mainly caused by insufficient light; the duration and intensity of light need to be gradually increased, and the leaf surface should be kept clean. Usually, when cleaning the leaf surface, do not wash or wipe it with water
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What are the common characteristics and habits of raccoon dogs?
Raising special economic animals, especially special fur animals, is highly profitable. However, the domestication and breeding time of special fur animals is relatively short; they not only retain strong wildness but also keep many wild habits. Those engaged in special animal breeding must fully understand the characteristics and habits of these animals so as to carry out targeted feeding and management. The raccoon dog resembles a fox in appearance, but has a small body, short legs, and long, fluffy fur. With the Yangtze River as the boundary, it is divided into two varieties, the southern raccoon dog and the northern raccoon dog, and by specific place of origin it is further divided into the Ussuri raccoon dog, Amur raccoon dog, Korean raccoon dog, Jiangxi raccoon dog, Fujian-Guangdong raccoon dog, and Hubei
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Common Symptoms and Treatment Methods of Keratitis in Dogs
[Etiology] Keratitis in dogs is usually caused by trauma or foreign bodies, and can also occur in certain infectious and parasitic diseases. [Key Points of Diagnosis] The main symptoms of acute keratitis are photophobia, lacrimation, pain, blepharospasm, and conjunctival hyperemia. When caused by trauma, the corneal surface is rough and uneven, with corneal opacity; some cases are relatively mild, showing only a layer of translucent thin nebula, while others are thicker, appearing as an opaque white membrane, and the affected dog thereby becomes blind. Cases with a longer course of disease develop corneal peripheral hyperemia and neovascularization.
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Common Problems and Countermeasures in Wheat Aphid Control
Problem 1: Controlling too late. Some farmers do not control according to the control threshold for wheat aphids, but instead control after the wheat aphids have covered the wheat ears. This not only harms the wheat, but also, because control is too late, affects the control effect. Countermeasure: The control threshold for wheat aphids is 500 aphids per 100 ears. Fields that reach the control threshold must be treated with pesticides immediately. Problem 2: Not updating the pesticide used. Not updating the pesticide used will cause wheat aphids to develop resistance to the pesticide used, and the control effect will be extremely poor. Countermeasure: In the early stage of aphid occurrence, per mu
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