How to manage soybeans during the flowering and podding stage? These key points must be mastered

Management of soybeans during the flowering and podding stage is related to the final yield of soybean cultivation and is closely tied to farmers' income. Once managed improperly, it can lead to reduced yield in mild cases or total crop failure in severe cases. So how should soybeans be managed during the flowering and podding stage? Let's take a look at the detailed introduction below.

1. Fertilization

The flowering and podding stage is the peak period of fertilizer demand for soybeans, so fertilization is the focus at this stage, especially fertilization at the flowering stage, which has an obvious yield-increasing effect. Generally, at the early flowering stage, apply 500 kg of diluted human manure and urine per mu, mix in 3-5 kg of urea, and apply together in holes. For fields with fertile soil and vigorously growing plants, apply less or not at all to avoid excessive vegetative growth and lodging. During the podding stage, combined with topdressing nitrogen fertilizer and foliar spraying of phosphorus, potassium fertilizers, as well as boron, molybdenum and other trace fertilizers, it has an excellent yield-increasing effect. Generally spray twice, each time using 100 grams of monopotassium phosphate, 25 grams of ammonium molybdate, and 100 grams of borax per mu, add 50 kg of water, and evenly apply to the stems and leaves.

2. Irrigation and drought resistance

Soybeans have a very high water requirement during the flowering and podding stage and are relatively sensitive to water. Generally, drought and water shortage will cause a large number of flowers and pods to drop. Therefore, when the climate is dry or the leaves wilt, irrigate in time. However, irrigation methods should also be noted. Flood irrigation is not suitable, as it can easily cause root asphyxiation and death. After water infiltrates, it can also lead to soil compaction and cracking, thereby damaging the root system and causing plants to lodge and die. It is recommended to use small furrow irrigation, dig furrows between rows, release water into the furrows, and when the soil is moist, drain excess water to avoid affecting root growth.

3. Drainage and waterlogging reduction

Soybeans themselves have poor waterlogging tolerance. During the flowering and podding stage, if there is excessive rain, it will cause yellowing of plant leaves and a large number of flowers and pods to fall off, and water accumulation in the soil will also lead to root hypoxia or asphyxiation. Therefore, when rain occurs during the flowering and podding stage, drainage and waterlogging reduction must be carried out in time to avoid poor plant growth and thus affect later yield.

4. Growth control

During the flowering and podding stage of soybeans, under conditions of sufficient fertilizer and water, the stems and leaves of the plants are very prone to excessive and vigorous growth, competing with pods for nutrients, resulting in poor bean grain growth and the appearance of shriveled grains, seriously affecting yield and returns. Therefore, growth control measures should be taken during the flowering and podding stage. In production, chemical growth control is commonly used. Generally, around the flowering stage, spray a very low concentration of paclobutrazol and evenly spray it on both sides of the leaves. The growth control effect is obvious and can inhibit plant growth to a great extent, concentrate nutrients in the pods, and have an obvious yield-increasing effect.

The above is an introduction to the key management points for soybeans during the flowering and podding stage. We hope it can help you. If you want to learn more related knowledge, please follow us.