What to Do About Soybean Lodging? Cause Analysis and Remedial Measures

During soybean cultivation, lodging is often observed, but the causes are more than one; there are multiple causes. The specific causes are described in detail below. After soybeans lodge, what should be done, are there remedial methods, solutions. How to avoid the losses caused by soybean lodging. So please continue reading below.

1. Causes of lodging

The common cause is that extreme weather with strong winds and heavy rain directly causes soybean lodging. If the wind and rain last a long time, there is simply no way to deal with it; natural disasters cannot be avoided. However, some cases are due to variety reasons, for example, tall-stalk varieties are prone to lodging, and those with slender stems are prone to lodging, while short, sturdy varieties are not prone to lodging. If the soil is too fertile, excessive vegetative growth of the plants also makes lodging likely. If the planting density is too high, soybean growth does not get enough nutrients, and the plants are instead more prone to lodging.

2. Seed selection and cultivation

For ordinary soil, choose tall-plant varieties; for fertile soil, choose short, sturdy varieties, but generally choose short, sturdy varieties with strong resistance. Those with good adaptability, strong resistance, and strong growth vigor are all very good. Decide the planting quantity according to soil fertility and area: plant more on poor land, and plant less on fertile soil. This prevents lodging.

3. Fertilizer and water control

Apply less nitrogen fertilizer. Soybean roots fix nitrogen, so applying more is likely to be excessive, and excessive growth makes lodging likely. Nitrogen fertilizer only needs to be applied at the flowering stage, applying urea. If compound fertilizer is applied as the base fertilizer, do not apply nitrogen fertilizer in topdressing at other times, except at the flowering stage. Of course, if there is uniform yellowing of leaves, and the yellowing is not affected by pests or diseases, high temperature, or drought, it may be due to nutrient deficiency, so apply some appropriately. Apply more potassium fertilizer and plant ash to strengthen the stems.

4. Growth regulation

To avoid excessive vegetative growth and spindly growth of the plants, which bring hidden risks of lodging, you can spray growth regulators that control vigorous growth in the early stage of plant growth, such as chlormequat and paclobutrazol. Spraying for control can also be done at the flowering stage; if there is no excessive growth, do not spray at the flowering stage. Spray at the appropriate concentration; if the concentration is wrong, it may backfire. Do not spray before rain; spray in the evening after the rain clears.

The direct cause of soybean lodging is weather effects, and the indirect causes are weak and long stems. Some methods can be used to adjust and prevent lodging.