1. Use resistant soybean varieties to reduce the risk of disease.
2. Practice crop rotation by planting non-host crops like corn, millet, and sweet potatoes to break the disease cycle.
3. Incorporate organic manure along with potash and phosphate fertilizers during sowing to improve soil health and plant resilience.
4. Apply seed treatment granules at planting time to enhance root absorption and protect against root infections.
5. Before sowing, treat seeds with 35% metalaxyl powder at a rate of 0.3% of the seed weight to prevent fungal infections.
6. Implement proper field management practices, including timely deep plowing, soil cultivation, and weeding. Ensure good drainage after rain to avoid excessive moisture, which can promote disease development.
7. Immediately remove any diseased plants and clear all plant debris from the area. Disinfect the affected planting holes and surrounding soil using lime to prevent further spread.
8. Once the disease has occurred, it becomes difficult to cure, so prevention is key. For preventive measures, you can use several fungicides such as 40% root rot solution, 70% thiophanate-methyl wettable powder diluted 400 times, or 58% wettable powder diluted 600 times. Alternatively, 50% carbendazim WP at 50% concentration, 75% chlorothalonil wettable powder at 600 times, or 77% mancozeb wettable powder at 600 times. Mix any of these with amino acid-based liquid fertilizers like Soybean Health Spleen or San Tian Qing, diluted 600 times. Add 500 times diluted fulvic acid solution and 1000 times diluted rooting powder. Spray every 7 days for 2–3 applications, alternating between different products, focusing on the base of the stems. If applied directly to the roots, the results will be more effective.
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Human chorionic gonadotropin is a hormone for the maternal recognition of pregnancy produced by trophoblast cells
Human chorionic gonadotropin (HCG) is a glycoprotein secreted by trophoblast cells of the placenta And β dimer proteins. The molecular weight of glycoprotein hormone 36700, A. Pituitary, FSH, follicle stimulating hormone, LH (luteinizing hormone) and TSH (thyroid stimulating hormone) are basically similar, So they can cross-react with each other, while the structure of β subunit is not similar. In mature women, the fertilized ova move to the uterine cavity for implantation and form embryos. In the process of development and growth into the fetus, the placental syncytiotrophoblast cells produce a large amount of HCG, which can be excreted into urine through the blood circulation of pregnant women. Serum and urine HCG levels rise Rapidly from 1 to 2.5 weeks of gestation, reaching a peak at 8 weeks of gestation and dropping to moderate levels at 4 months of gestation, which remain at the end of gestation. At present, the commonly used detection methods are: latex aggregation inhibition test and hemagglutination inhibition test; Radioimmunoassay (RIA); Enzyme linked immunosorbent assay (ELISA); Monoclonal antibody colloidal gold test
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