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What are the symptoms of viral diseases in rice?
Affected plants are stunted and the leaves become discolored, growth declines, and the leaf color turns orange to yellow. When indica rice is infected, the color is mostly orange or slightly reddish, so it is also called red leaf disease. Mottling appears on young leaves, and rust-colored spots appear on old leaves. At present, 11 kinds of rice viral diseases have been found in China (including two mycoplasma-like diseases), namely common dwarf disease, yellow leaf disease, stripe leaf blight, black-streaked dwarf disease, yellow wilt disease, grassy stunt disease, bunchy dwarf disease, ragged stunt disease, orange leaf disease, tungro disease, and tumor dwarf disease. In southern China, rice common dwarf disease and yellow leaf disease cause the most severe damage.
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Identification and Control Methods of Common Rice Diseases
1. Rice blast (1) Damage characteristics: Rice blast, also known as rice fever disease, commonly called fire blast, dangling-head blast, neck-pinching blast, etc., is one of the most widespread and most damaging fungal diseases worldwide, mainly harming the aboveground parts of the host plant. Because the damage period and site differ, it can be divided into seedling blast, leaf blast, neck blast, branch blast, grain blast, etc. Its host range includes rice, wheat, crabgrass and many other grass family plants. The rice blast pathogen mainly overwinters on diseased rice straw, and in the second year spreads from the diseased straw into rice fields to infect and cause damage. Pathogen transmission mainly relies on wind
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12% Rice Power is worthy of being called the nemesis of rice diseases
12% Rice Power emulsifiable concentrate (i.e. 12% Green Copper Emulsifiable Concentrate, rice-specific type) is a fungicide specially for rice. According to large-scale demonstration and promotion in major rice-producing areas such as Hunan, Hubei, Guangxi and Zhejiang, it has good control effects on many fungal and bacterial diseases of rice such as bacterial leaf streak, bacterial blight, rice false smut and rice blast, and its effect on bacterial leaf streak is especially remarkable. Rice Power is a low-toxicity pesticide; under natural conditions it degrades quickly, with no residue and no pollution, and is safe to humans, livestock and the environment; among its components
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Detailed Explanation of Common Rice Diseases and Their Control Methods
Throughout the entire growth period of rice, common diseases include rice blast, bacterial leaf streak, bacterial leaf blight, sheath blight, rice false smut, and others. (1) Rice blast: It can occur from the seedling stage to the heading stage. According to the symptoms shown at different growth stages and on different parts of the plant, it can be divided into 5 types: seedling blast, leaf blast, node blast, panicle blast, and grain blast. 1. Main symptoms (1) Seedling blast: The diseased seedling turns grayish-black at the stem base near the soil surface, and the upper part turns light reddish-brown, causing the entire seedling to curl and die. (2) Leaf blast: On
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What are the treatments for six common diseases of chickens?
Raising chickens is a good way for farming families to get rich. But in the process of raising chickens, the common diseases mainly include chicken roundworm disease, chicken tapeworm disease, chicken mites, chicken feather lice and chicken diphtheria, all of which cause varying degrees of harm to chicken growth. Once disease occurs, it must be treated promptly to reduce the losses these diseases cause to farmers raising chickens. The chicken roundworm is a round, pale-yellow nematode that parasitizes the small intestine of chickens, and the worm body is generally 50 mm to 110 mm long. After a chicken gets this disease, egg production drops, and in severe cases there is anemia and even
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How to use drugs to prevent swine respiratory diseases? Sharing practical solutions
A variety of drugs can be used in production to prevent swine respiratory diseases. The main drugs include tiamulin (Tailijia), chlortetracycline (doxycycline), oxytetracycline, amoxicillin, tiamulin, kitasamycin, thiamphenicol, florphenicol, Ailihutaisu, Taihuangfeisu, etc. New drugs and drug combinations are also constantly emerging. Pig farms (households) can flexibly choose according to actual conditions, and combining with drug sensitivity tests will be more targeted. For sows, add 100 grams of tiamulin, 300 grams of chlortetracycline, and amoxicillin per ton of feed
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Occurrence of Tulip Diseases and Integrated Control Methods
Tulip is a perennial bulbous herbaceous plant of the genus Tulipa in the family Liliaceae, also known as foreign lotus, grass musk, peony lily, etc., and is one of the most popular cut flowers in the world. With the adjustment of industrial structure, many places in Jiangsu Province have formed tulip fresh cut flower bases. However, in the production process, we found that every stage may be harmed by fungal, bacterial and viral diseases, thereby affecting the normal growth of plants, reducing the quality and ornamental value of cut flowers, and in severe cases causing devastating damage. Therefore, preventing the occurrence and development of tulip diseases is the
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What are the common methods for preventing and controlling cherry blossom pests and diseases?
There are many types of cherry blossom pests and diseases. The common ones are described below: Perforation-type brown spot disease occurs in May and June. Small purple-brown spots appear on the leaves, then gradually expand into circles. After the diseased spots dry and shrink, they become small holes. The pathogen mostly overwinters on diseased branches and leaves. The optimum temperature for its development is 25°C to 28°C. It spreads by wind, and rainy seasons favor infection and disease development. When the tree is weak, drainage is poor, and ventilation and light penetration are poor, the disease occurs severely. Control methods: (1) Strengthen cultivation management, prune and trim reasonably
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A Detailed Guide to Common Cherry Blossom Diseases and Care Management Methods
1. Cherry blossom leaves are glossy, thick and green in spring, evergreen in summer, and turn red in autumn. These are all signs of vigorous growth in cherry blossoms, and they also indicate that the cherry blossom's flowering the following year will be relatively ideal. 2. ① The cherry blossom trunk shows symptoms of gummosis. This phenomenon is not a disease, but is caused by moths boring into the trunk to lay eggs. The eggs should be promptly dug out with a knife and medication injected, while also improving the soil, strengthening water and fertilizer management, and pruning rationally. ② Many mushroom-like and moss-like growths appear on the trunk. This indicates that many pathogens have invaded the branches of the cherry tree
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A Detailed Guide to the Prevention and Treatment of Common Scorpion Diseases
Raising scorpions is a good way for farming families to get rich. During the rearing process, scorpions are prone to diseases such as black abdomen disease, dry wilt disease, scorpion lice and hemiplegia. The prevention and treatment methods are described below: 1. Black abdomen disease: the front abdomen of the scorpion swells and turns black, and then it dies. The cause is that the scorpion has eaten or drunk unclean, foul food or water. The symptom is a swollen black abdomen, and black water or sludge-like matter can be pressed out of the abdomen by hand. The prevention and treatment method is to pay attention to hygiene and remove rotten food or dirty water. 2. Dry wilt disease: the tail (rear abdomen) of the scorpion turns yellow
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