Causes of falling flowers and pods in soybean

Soybean is soybean, which is one of the important grain and oil crops in our country. With the rapid development of soybean planting industry, its planting scale and planting area are getting wider and wider. However, the phenomenon of falling flowers and pods during planting is also increasing, which seriously affects the yield and quality of soybean and reduces the income of growers, so what is the reason for falling flowers and pods of soybean? Let's take a look.

1. Poor ventilation and light transmittance

In planting, because the planting density is too high, the ventilation and light transmittance is poor, the plant is easy to grow, close the row prematurely, the light condition of the lower half of the plant is poor, it is easy to appear the phenomenon of leaf yellowing and falling off. Poor photosynthesis, less production and accumulation of nutrients, so it is easy to appear the phenomenon of falling flowers and pods.

2. Unreasonable application of nitrogen fertilizer.

Nitrogen element can promote plant growth. When planting soybean, reasonable application of soybean can promote the development of soybean rhizobium, increase the amount of nitrogen fixation and increase the yield. However, if excessive nitrogen fertilizer is applied, it will not only inhibit the nitrogen fixation ability of soybean, but also cause overnutrition, resulting in plant overgrowth, canopy closure and lodging, flowers and pods.

3. Nutrient imbalance

When soybeans blossom and bear pods, it is the period of greatest demand for nutrients, when the demand for nutrients accounts for 45% of the total demand. If the supply of nutrients is insufficient or out of balance, it will lead to a large number of flowers and pods. Therefore, when soybean blossoms and bears pods, it must be fertilized in time to ensure the supply of nutrients, make it blossom and bear pods more and increase its yield.

4. Improper water management

The demand for water of soybean varies with different growth stages. In the flower and pod stage, if the water fruit, the plant will wilt, the soil nutrient absorption capacity, and the lack of water and nutrients will lead to a large number of flowers and pods shedding. However, if the water is too large, the ground temperature is low and the humidity is high, it will affect the photosynthesis of the plant, resulting in slower synthesis and transport of nutrients and more shedding of flowers and pods.

5. Diseases and insect pests

Diseases and insect pests are one of the main factors affecting soybean planting industry. diseases and insect pests will destroy the leaves of the plant, weaken the photosynthesis of leaves, and affect the synthesis and transport of nutrients, so flowers and pods will fall off.

The above is the introduction of the reasons for falling flowers and pods of soybeans. I hope I can help you. If you want to know more about it, please follow us.