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How should sclerotinia rot in cabbage be prevented and controlled?
Answer: Low temperatures in early spring and many days with little sunlight favor the occurrence of sclerotinia rot in cabbage. After the plant becomes infected, water-soaked lesions appear first, then turn into white lesions, and in severe cases cause the plant to rot. Prevention and control methods: 1. Agricultural control. Before sowing, rinse the seeds with 10% salt water or 10%-20% ammonium sulfate solution, then dry them and sow. ...
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What are the control methods for the three major soybean diseases?
Soybean root rot: This disease can occur and cause damage throughout the entire growth period of soybean, with yield reductions ranging from 25% to 75% or more. The protein content of infected seeds is significantly reduced. The main symptoms are dark brown lesions appearing at the base of the stem and spreading upward to varying degrees to the lower lateral branches, causing the pith of the diseased stem to turn brown, the base of the petiole to constrict...
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What damage does the soybean pod borer cause? A detailed explanation of control techniques and methods
The soybean pod borer belongs to the order Lepidoptera, family Tortricidae, and is also known as the soybean pod-boring moth, pod worm, and small red worm. Its larvae bore into soybean pods and feed on the beans, with an annual bean-feeding rate of about 10-20%, up to 30-40% in severe cases and as high as 80% at worst, and it also affects soybean quality and lowers the grade. When the soybean pod borer appears in the field...
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Dodder Control Methods and Technical Key Points in Soybean
Dodder, also called yellow silk vine or tangling silk vine, is a malignant weed. It harms many crops and can cause total crop failure in soybean, and it occurs commonly in all regions. (1) Morphology: The stem of soybean dodder is yellow, orange-yellow or yellow-green, smooth and hairless, thread-like, and coils leftward around the host stem. The leaves are reduced to membranous scales. The flowers...
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What are the pollution-free soybean diseases and their control methods?
The soybean aphid is one of the major pests of soybean, with adults and nymphs piercing and sucking sap on the top leaves, tender leaves and tender stems of the soybean plant. In severe cases they cover the stems and leaves, and can also attack tender pods, causing stunted plants, reduced fruiting branches and pod numbers, and lower 1000-grain weight; when severe at the seedling stage, the entire plant can die, and in outbreak years if not controlled in time...
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Control Methods for Major Diseases and Pests of Melons
Melon, also known as oriental melon, is one of the high-grade fruits that people love. It belongs to the Cucurbitaceae family, Cucumis genus, melon species, and is an annual herbaceous plant. I. Variety Types and Selection of Improved Varieties Melons are generally divided into two types: thin-skinned melons and thick-skinned melons. Thin-skinned melons, also known as Chinese melons, have thin skin, crisp flesh, and small fruits with a single fruit...
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Pollution-free Disease and Pest Control Techniques for Muskmelon
The main pests harming melons include root maggots, mole crickets, cutworms, white grubs, leafminers, pumpkin beetles, aphids, and red spider mites, among others. (1) Root maggot: also called root maggot or melon maggot. It is the larva of the seed corn maggot. The body is about 5 mm long and maggot-shaped, damaging the young roots, young shoots, and tender stems of melon seedlings. Common control methods are as follows: ...
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How to prevent and control pests, diseases and weeds during the seedling stage of cabbage-family vegetables
Cabbage clubroot mainly harms cruciferous vegetables. After the disease occurs, the roots swell and become tumor-like, hence the name clubroot disease. Generally, after the main root is infected, it becomes lump-shaped, and after the fine roots, branch roots, lateral roots and fibrous roots are infected, they are mostly locally swollen and deformed. Simple diagnosis: clubroot disease and root-knot nematode disease have similar field symptoms. When distinguishing them, you can dissect...
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What are the control methods for soybean mosaic virus disease?
Suihua City in Heilongjiang Province is a major soybean-producing area, with a perennial soybean planting area of nearly 300,000 hectares. In recent years, the occurrence of soybean mosaic virus disease has shown a trend of worsening year by year, occurring in most fields, with the disease incidence rate in the field generally around 4.8%, and reaching over 20% in severe cases; the rate of brown (black) mottled seeds in soybean grain is over 10%,...
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How to prevent and control peanut bacterial wilt? Understanding the patterns of occurrence is key
Peanut bacterial wilt, commonly known as "green wilt", "seedling death", "plague", and "vine death", is a major disease in peanut-growing areas. In ordinary plots, the disease incidence is 10%-25%, and in severely affected plots the incidence reaches over 50%. Peanut bacterial wilt is a typical vascular disease that can occur throughout the entire growth period of peanuts, but...
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