What to Do About Black Soybean Flower and Pod Drop? A Full Breakdown of Prevention Measures

Black soybean not only has extremely high nutritional value, but also extremely high medicinal value, with effects of reducing swelling and descending qi, moistening the lungs and clearing dry heat, invigorating blood and promoting water movement, and dispelling wind and removing impediments. For growers who plant black soybean, flower and pod drop is the last thing they want to see, so how do you prevent black soybean flower and pod drop? Let's take a look at the detailed introduction below.

1. Reasonable close planting

When planting, first pay attention to planting density. Some farmers plant too densely in order to increase yield. In this case, during the flowering and podding stage of black soybean, the field is closed in, permeability is poor, and flowers and pods crowd each other, which weakens the photosynthesis of the leaves and leads to insufficient synthesis of nutrients. At the same time, it also hinders the transport of nutrients. Under such conditions, flower and pod drop occurs. So excessive density will not only fail to achieve high yield, but on the contrary will reduce yield. Therefore, when planting, reasonable close planting must be used to improve field permeability and increase yield.

2. Reasonable fertilization

Black soybean has a relatively large demand for fertilizer during growth, so this point should be noted when planting. If soil fertility is insufficient, flowers and pods will drop because of vegetative growth. Fertilization should be based mainly on base fertilizer, supplemented by topdressing, and mainly on organic fertilizer, supplemented by chemical fertilizer. In particular, black soybean must receive sufficient nutrients after flowering, but the amount of nitrogen fertilizer applied should also be noted to avoid excessive vegetative growth. Attention should be paid to combined use of phosphate fertilizer to avoid flower and pod drop.

3. Proper irrigation

The flowering and podding stage of black soybean coincides with midsummer, when temperatures are high and hot, soil moisture evaporates quickly, and the soil is prone to drought and water shortage. The root absorption capacity of black soybean then weakens, and once this happens, flower and pod drop occurs. Therefore, after this situation appears, regular irrigation should be carried out in midsummer, but flood irrigation is not suitable; light and frequent watering should be the main approach. If too much water is applied each time, it may lead to excessive moisture, causing the roots to absorb slowly or even be unable to absorb nutrients and water, resulting in flower and pod drop. In addition, summer is also a rainy season. To avoid waterlogging in the soil and root rot, drainage measures should be taken well after rain.

4. Weeding

Weeding should be done in time during the growing period. Weeds not only compete with black soybean for water and fertilizer, but vigorous weeds can also cause the field to be closed in with poor permeability. Moreover, weeds also provide the best hidden habitat for pests and diseases. Generally, once this situation occurs, flower and pod drop will follow. Therefore, for the purpose of increasing yield, regular weeding is recommended. It can not only improve the growing environment of black soybean and increase permeability, but also reduce the degree of damage from pests and diseases.

The above is an introduction to prevention measures for black soybean flower and pod drop. We hope it can help you. To learn more related knowledge, please stay tuned to us.