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How to prevent and control soybean gray leaf spot? Understand the control methods in one article
Soybean gray leaf spot is a commonly occurring disease. In severe cases, it causes leaves to die off, leading to defoliation and reducing yield. 1) Symptoms: Gray leaf spot can occur throughout the entire growth period of soybean. It mainly damages soybean leaves. The lesions are round to elliptical or irregular in shape, with a diameter
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How to prevent and control spring soybean virus disease? Detailed explanation of occurrence patterns and control methods
Viral disease is a major disease of spring soybean, causing about 15% yield loss in normal outbreak years and over 50% yield loss in severe outbreak years. 1 Symptoms After spring soybean is infected, the upper leaves first show light yellow-green mottling, and the mesophyll bulges in a blister-like manner along the veins; then the mottling and wrinkling become increasingly severe, the leaves become deformed, the mesophyll protrudes, the leaf margins curl downward, plant growth is clearly stunted, the number of pods decreases, the pods are small and slender, and the pods show deformed symptoms such as flattening and bending. After infected spring soybean matures, the seeds are clearly smaller, and light brown streaks can appear on the seeds.
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Occurrence patterns and control methods of soybean sclerotinia stem rot
Soybean sclerotinia stem rot occurs commonly in Heilongjiang Province. In 2001, the disease was relatively severe in Raohe County. In continuous soybean cropping fields, the disease incidence rate was 3%-30%, and in individual fields following American sunflower, the incidence rate reached 50%. In severely affected fields, the crop was even completely lost. 1 Causes of the disease 1.1 Climatic conditions In mid-to-late July, continuous low temperature and scant sunshine
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How to prevent and control soybean root rot? These methods you need to master
1. Select disease-resistant varieties. 2. Rotate with non-host crops such as corn, millet, and sweet potato. 3. When sowing, apply more farmyard manure, potassium fertilizer, phosphate fertilizer, etc. 4. When sowing, apply metalaxyl granules so that soybean roots can absorb them to prevent root infection. 5. Before sowing, use seed weight
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Control methods for soybean mosaic virus in soybean cultivation
1) Select disease-resistant varieties: Different soybean varieties have different resistance to soybean mosaic virus, so selecting disease-resistant varieties suited to the local area is the most effective measure for controlling soybean mosaic virus. Disease-resistant varieties include Qihuang No. 22, Ludou No. 4, Ludou No. 1, Ludou No. 7, Ludou No. 6,
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Methods and Technical Points for Cultivating Strong Wheat Seedlings Before Winter
Only by cultivating strong seedlings before winter can you ensure large ears, many grains, heavy grains, and a high-yield harvest for the next year's wheat. The standard for strong wheat seedlings before winter is: before winter, the main stem grows 7-8 leaves, each plant has 7-8 tillers, and 8-9 secondary roots; for ordinary wheat fields, the number of stems per mu should be
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What are the control methods for wheat powdery mildew?
In recent years, with the improvement of fertilizer and water conditions in wheat fields and the increase in plant density in high-yield fields, wheat powdery mildew has become increasingly severe year by year. After the powdery mildew pathogen parasitizes wheat, the plant's respiration increases, transpiration intensity rises, and photosynthetic efficiency decreases, seriously affecting the normal
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March wheat pest and disease control methods
March is the first critical period for spring control of wheat pests and diseases in our province. The main pests and diseases occurring include wheat sharp eyespot, wheat spider mites, and seedling-stage aphids. In particular, if wheat sharp eyespot in areas with above-moderate occurrence is not effectively controlled, it will cause serious impact on wheat production
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Applying winter manure to wheat requires attention to timing and method
During the overwintering period of wheat, adding winter manure can not only supplement the deficiencies of base fertilizer and seedling fertilizer, but also maintain and stabilize the soil temperature around the wheat roots. Through the slow decomposition of fertilizer in winter and absorption by the roots, it lays the foundation for vigorous growth in spring. Winter manure should mainly consist of organic matter-rich, warm-natured
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Method for Soaking Wheat Seeds in Biogas Slurry to Boost Yield
Biogas slurry contains a variety of active, resistance-related and nutritional substances. Soaking seeds in biogas slurry can promote the metabolic activity of wheat seeds, making wheat seedlings emerge evenly, with well-developed root systems and vigorous growth, enhancing cold and disease resistance, and increasing wheat yield. According to trials, soaking wheat seeds in biogas slurry
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