Causes and preventive methods of soybean turning green

Soybean turning green is a phenomenon when soybean enters the mature stage, which will seriously affect the yield and quality of soybean, so what is the reason leading to the phenomenon of soybean turning green? How to prevent it? With the editor to understand the causes of soybean green and preventive measures.

First, the cause of soybean turning green.

1. Improper varieties

Soybean podding habits are different, the occurrence degree of green phenomenon is also different, infinite podding habits of varieties are more serious, on the contrary, the occurrence of limited podding habits of varieties is lighter. This is because limited podding habit varieties will turn to reproductive growth after vegetative growth to a certain extent, while unlimited podding habit varieties go hand in hand in vegetative growth and reproductive growth, and it is easy to turn green when partial application of nitrogen fertilizer.

2. Improper climate and environment

In continuous cropping, the diseases and insect pests are serious, which will affect the reproduction of soybean rhizobium, reduce the ability of nitrogen fixation, the imbalance between vegetative growth and reproductive growth, and turn green. The peak of water demand is in the flowering and pod stage of soybean, when the lack of water will affect the normal flowering and podding of soybean, the retardation of normal reproductive growth and the late ripening of vegetative growth. High temperature at flowering stage will affect the plant to pollinate and form blighted pods. If the light time is too long, it will delay flowering and lead to green.

II. Preventive measures

1. Rational irrigation

The poor watering of soil moisture before sowing can ensure timely sowing and lay a solid foundation for high yield. at the seedling stage of soybean, that is, within 15 days after emergence, the soil is slightly dry, which can promote the root system to tie down and prevent lodging in the later stage, unless it is too drought. generally, no watering is needed. In 15-35 days after emergence, watering in case of drought can increase plant height and promote flower bud differentiation. In flower and pod stage, watering in case of drought can meet the water demand of bulging seeds.

2. The combination of nitrogen, phosphorus, potassium and boron

The content of available boron in soil was positively correlated with the relative yield of soybean. The effect of seed dressing with boron fertilizer was the best, which could reduce the rate of blighted pods by 10% and increase the yield by about 20%.

3. Pay attention to disease and pest control.

Attention should be paid to the occurrence of aphids at the seedling stage, and prevention and control should be carried out as early as possible. when the rate of aphids is 20% and 30%, and individual rolled leaves appear, they should be immediately prevented and treated at the same time as spider cotton, dwarf disease and so on.

4. Application of plant growth regulators

Plant growth regulators can be used in production to reduce the incidence of pods and increase the yield accordingly. The commonly used plant growth regulators are triacontanol, 784-1 and ABT rooting powder No. 5, but pay attention to the concentration.

The above is the introduction of the causes and prevention methods of soybean turning green. I hope it can help you. If you want to know more about it, please follow us.