What are the symptoms of frost damage to vegetables? What are the measures to prevent and control vegetable cold damage?

Vegetable chilling injury refers to the damage caused by the temperature dropping below the minimum limit of growth and development during the growing season, which causes physiological disorders or damage to fruiting organs of vegetables, seriously affecting quality and yield. What are the symptoms of chilling injury to vegetables and how to effectively prevent and control it? Let's learn about it together.

What are the symptoms of frost damage to vegetables?

(1) The leaves and fruits look black, especially the peppers, where this phenomenon is very obvious.

(2) I feel as if the leaves and fruits have been scalded or boiled.

(3) When the ice and snow have been frozen but have not yet melted, the black color of the leaves and fruits does not look very obvious. If the sun comes out and the ice and snow melt, the black color will appear directly. After a day or two, the fruits and leaves will rot, especially the fruits.

What are the measures to prevent and control vegetable cold damage?

The principle is to take precautions in advance. What I am talking about here is that for vegetables grown in vegetable greenhouses, the greenhouses must be covered tightly.

As for those planted outdoors, the cold damage they encounter around National Day is almost impossible to reverse and cannot be avoided. Just like what happened in my house, no matter what warming measures you take, you will still suffer from frost damage.

In the early spring season, if you want to plant in the open field, you must use a small shed and lay ground film to alleviate the cold damage. This will have a good alleviating effect.

What happens when vegetables have leaf spots in winter?

In case of snowfall or cold weather, if the insulation measures are not in place, the temperature in the environment will change suddenly or the ventilation will be improper, causing the leaf flesh cells to freeze and die, and gray-white frost damage spots will appear on the surface of the leaves. Many vegetable farmers call it "flash". In addition, the cold damage caused by continuous low temperature will cause the edges of the leaves to die. This symptom indicates that the damage has reached the late stage, because the tissues that have suffered from the cold damage have not recovered.

Related News

Choose the right varieties for vegetable planting, master the appropriate sowing period, and choose the appropriate sowing and planting period according to the medium- and long-term weather forecast. It is best to test varieties that are not familiar with winter characteristics before planting them on a large scale.