Causes and control methods of blighted soybean grains

After maturity, soybeans often have the phenomenon of incomplete grain development, or even only an empty shell, such a bean grain is called blighted grain or shrunken grain, and some blighted grains will be raised to yield. So what is the reason for the blighted grain of soybean? How to prevent and cure it? Let's take a look at the detailed introduction.

First, the cause of blighted grain

The main reason for the production of blighted grains in soybean is the gradual decline of leaf function, resulting in less nutrients synthesized by photosynthesis, and blighted grains in soybean grains due to lack of nutrition. Or because of the lack of water, the transport of nutrients is hindered and can not be transported to beans in time. And soybean in the late growth, the inevitable reason for the decline of physiological function, but if fertilizer and water over a lifetime, it will accelerate the decline, resulting in serious growth of grain nutrition, it will stop development and cause blighted grains. In addition, when planted in the soil with loose fertility and sufficient bottom fertilizer, the early growth of soybean will be too prosperous, overgrowth or lodging will also lead to the emergence of blighted grains in the later stage, as well as diseases and insect pests.

II. Prevention and control methods

1. First of all, according to the soil moisture and climatic conditions, timely watering or drainage, in the soybean flower and pod period, if there is a dry climate, timely drainage, but flood irrigation is strictly prohibited, and in case of overcast and rainy weather, timely drainage is required to avoid stagnant water retting the roots. In addition, after watering or rain, the soil can be properly ploughed, loosen the soil, increase soil permeability, avoid soil consolidation after watering, promote the growth of soybean root system and enhance the absorption capacity.

2. The peak period of fertilizer requirement of soybean is in the flowering and pod stage and grain formation stage of soybean. at this time, the insufficient supply of nitrogen and phosphorus fertilizer will lead to the slow growth of soybean, the prolongation of flowering and pod period and the increase of blighted grains. Therefore, it is necessary to apply fertilizer in time at this time. In order to quickly supplement the nutritional needs of the plant, foliar spraying can be used. Generally, 200 grams of potassium dihydrogen phosphate, 50 grams of ammonium molybdate per mu, 50 kg of water and 60 kg of water are sprayed evenly, and the yield can be increased by more than 10%.

3. We must pay attention to the prevention and control of diseases and insect pests, strengthen field management, increase the application of organic fertilizer or phosphorus and potassium fertilizer, enhance plant disease resistance, timely prevention and control of diseases and insect pests, so as not to affect the yield.

The above is an introduction to the causes and control methods of blighted soybeans. I hope I can help you. If you want to know more about it, please follow us.