Latest Techniques for Soybean Seedling Stage Management to Help You Grow Strong Seedlings

To achieve high yields in soybean, good planting is the foundation and management is the key, especially seedling stage management, which is the most important factor determining yield. The goal of seedling stage management is uniform and strong seedlings. So how should soybean be managed during the seedling stage? Follow the editor and take a look.

1. Checking seedlings and replanting

After soybean seedlings emerge, seedlings should be checked and replanted immediately. When missing seedlings are found, seeds of the same variety should be soaked and replanted promptly, or seedlings should be transplanted with soil as a supplement during thinning. For gaps in the row longer than 30 cm, replanting or transplanting should be done, while for gaps shorter than 30 cm, double plants can be left at both ends of the gap and no replanting is needed.

2. Thinning and final singling of seedlings

Thinning should be carried out when the soybean cotyledons unfold, and final singling should be done when the first compound leaf appears. The retained plant density depends on soil fertility and variety. For dibbling, leave 2 plants per hole; for drilling with a row spacing of 40 cm, if the planned density is 25,000 plants, leave 15 plants per meter; for 15,000 plants, leave 9 plants per meter; for 35,000 plants, leave 24 plants per meter.

3. Scientific topdressing

Improper fertilization of soybean can cause excessive vegetative growth and lodging of seedlings, resulting in reduced yield later. Therefore, the principle of topdressing at the seedling stage is to apply phosphorus and potassium fertilizer early and appropriate nitrogen fertilizer later. Generally, after final singling, apply 10 kg per mu of compound fertilizer with a 45% content, and at the pod-setting stage apply 5 kg per mu of urea. When seedlings are growing too vigorously, the first topdressing can be reduced or omitted.

4. Pest and disease control

The pod-setting stage of spring soybean occurs in hot and rainy weather, making soybean purple seed stain and downy mildew very likely to occur. You can use 100 g of 85% metalaxyl or DuPont Curzate, add 50 kg of water, and spray the leaf surface for control. Pests mainly include aphids, red spiders, and bean stem maggots, and you can use 50 mL of 40% omethoate or phoxim, add about 40 kg of water, and spray for control.

5. Drought resistance and drainage

Water management should be paid attention to during the soybean seedling stage. Lack of water can seriously affect its growth and may even cause plant death from water shortage. However, the seedling stage is also a rainy season, making waterlogging from accumulated water very likely. Therefore, waterlogging damage should also be prevented during the seedling stage to avoid root rot and large-scale plant death.

  The above is an introduction to soybean seedling stage management techniques. We hope it can help you. To learn more related knowledge, please keep following us.