After sowing soybeans, continuous overcast and rainy weather sets in, and the old farmer worries it will affect seedling emergence.

It keeps raining after the soybeans are sown, so can they still emerge? There is no need to worry too much; emergence is still possible, but if there is heavy rain or continuous rain for a long time, the emergence rate and the uniformity of emergence will still be greatly reduced. In fact, this is similar to heavy watering after sowing, and it will have a certain effect on emergence after sowing. Let us discuss this in detail below.

Because of the continuous rain, the soil density at the surface inevitably increases greatly, that is, the surface soil becomes compacted. In rainy weather, this also makes it easier for surface runoff to form, draining rainwater out of the farmland so that waterlogging does not form there. But a major problem that follows is that after the surface soil becomes compacted, the increased density makes it difficult for soybeans to emerge.

However, in some areas, soil erosion may cause the soil in certain parts to cover the seeds too deeply, so the soybean seedlings cannot break through the soil layer and cannot emerge. This is naturally also a major problem caused by rain.

In addition, while the surface runoff caused by continuous rain in the farmland leads to soil and water loss, it will also wash away many soybean seeds because of the surface water flow, and some sown soybeans may even be exposed by the water flow. As a result, after the weather clears afterward, they cannot absorb water from the soil, so naturally they cannot become seedlings. Even if they can later germinate, they may still wither and die because the root system is too shallow to absorb enough water.

In response to the above situation, the farmland can be loosened and tilled after the rain. First, this can make the farmland soil soft; second, it can also increase soil aeration and provide more sufficient oxygen for seed germination; third, deep loosening and tilling can also clear weeds from the farmland.

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