What are the causes of shriveled soybean seeds and the control methods
After soybeans mature, there is often the phenomenon of incompletely developed seeds, or even only an empty shell. Such beans are called shriveled seeds or blighted seeds, and shriveled seeds will cause some loss to yield. So what causes shriveled soybean seeds? How to control it? Let's take a look at the detailed introduction together.
1. Causes of shriveled seeds
The main cause of shriveled soybean seeds is the gradual decline of leaf function, which leads to less nutrients synthesized by photosynthesis, and the beans become shriveled due to insufficient nutrition. Or it may be due to lack of water, which hinders nutrient transport so that nutrients cannot be transported to the beans in time. Moreover, in the late growth stage of soybeans, the decline of various physiological functions is inevitable, but if fertilizer and water are excessive, it will accelerate the decline, causing severely insufficient nutrition in the seeds, which then stop developing and become shriveled. In addition, when planted in fertile, loose soil with sufficient base fertilizer, soybeans may grow excessively in the early stage, with excessive vegetative growth or lodging, which can also lead to shriveled seeds in the later stage. Pests and diseases can also cause shriveled soybeans.
2. Control methods
1. First, according to soil moisture conditions and climatic conditions, irrigate or drain in time. During the flowering and podding stage of soybeans, if drought occurs, irrigate in time, but flood irrigation is strictly prohibited. If rainy weather occurs, drain in time to avoid waterlogging and root rot. In addition, after watering or rain, appropriate intertillage can be carried out to loosen the soil, increase soil permeability, avoid soil compaction after watering or rain, and also promote soybean root growth and enhance absorption capacity.
2. During the flowering and podding stage and seed formation stage of soybeans, the demand for fertilizer is at its peak. At this time, if the supply of nitrogen fertilizer and phosphate fertilizer is insufficient, it will lead to slow soybean growth, prolonged flowering and podding stage, and many shriveled seeds. Therefore, fertilizer should be applied in time. In order to quickly supplement the plant's nutritional needs, foliar spraying can be used. Generally, 200 grams of potassium dihydrogen phosphate and 50 grams of ammonium molybdate are used per mu, diluted with 50-60 kg of water, and evenly sprayed on the leaves, which can increase yield by more than 10%.
3. Great importance must be attached to the control of pests and diseases, field management should be strengthened, organic fertilizer or phosphate and potassium fertilizer should be applied more, the disease resistance of plants should be enhanced, and pests and diseases should be controlled in time to avoid affecting yield.
The above is an introduction to the causes of shriveled soybean seeds and control methods. We hope it can help you. If you want to learn more related knowledge, please follow us.