How to Prevent Winter Freeze Damage in Chestnut Trees? A Detailed Guide to the Latest Preventive Measures

Chestnut is a fairly common food in China, where the wild forms are mainly distributed in the south. It is also grown over a considerable area, and when cultivating chestnuts, management work is certainly very important. This is especially true in winter, because winter temperatures are very low, and if management is not up to standard, chestnut trees are highly prone to freeze damage. Therefore, the editor below brings you the preventive measures for winter freeze damage in chestnut trees. Let's take a look!

1. Clearing the Orchard to Prevent Freezing

From late autumn to early winter each year is the leaf-fall period for chestnuts. The main harvest time for chestnuts is generally in October, but although they have already been picked, there will still be some scattered chestnut fruits left on the branches when the leaves fall. Therefore, if you want to ensure that chestnut trees overwinter safely, orchard clearing work is very important. First, finish picking all the fruit, then prune out old, diseased and dead branches; some weak-growing branches should also be pruned along the way. This improves the internal ventilation and light penetration of the tree, and then the fallen leaves and dead branches should be gathered and burned.

2. Plowing the Woodland

Then carry out shallow plowing around young chestnut trees, keeping the depth at about 15 cm. For adult trees that have already borne fruit, deep plowing and pit expansion should be done, and an appropriate amount of humus soil should be added to create a good growing environment for the root system. The deep plowing depth for adult chestnut trees should be kept at about 32 cm, and when deep plowing, care must be taken not to damage the chestnut tree roots. Comprehensive tidying work should also be done to keep soil and water conservation facilities from being damaged, so as to avoid soil erosion on rainy days, which lowers soil temperature and causes chestnut trees to suffer freeze damage in winter.

3. Rational Fertilization

Before winter arrives, we should do a good job of applying base fertilizer after harvest. The fertilizer should be mainly farmyard manure, combined with an appropriate amount of chemical fertilizer. Using the trench application method, dig a ring-shaped trench around each tree and apply the fertilizer into it. The depth and width of the trench should be kept at about 40 cm. Then control the amount of fertilizer according to the tree's age and growth vigor. For example, if it is a large tree in full fruit stage with a yield of about 20 kg, then about 120 kg of fertilizer should be applied. After fertilizing, earth up promptly, which not only allows the root system to absorb it effectively but also serves to raise the soil temperature.

4. Scraping Bark and Whitewashing

Scraping bark and whitewashing is also an effective measure for preventing winter freeze damage in chestnut trees. As long as the chestnut tree is more than ten years old, bark scraping can be carried out, generally after the fruit is harvested. If it is in very cold regions such as the north, then bark scraping should be done in early spring. This is because pests and bacteria lurk in the cracked bark and old bark of the trunk and main branches of fruit trees, greatly affecting tree growth, reducing cold resistance and causing freeze damage. After scraping the bark, whitewash the large branches and trunk of the chestnut tree, which can both prevent freezing and prevent pests and diseases.

The above is a brief introduction to the preventive measures for winter freeze damage in chestnut trees. That is all for today's introduction. This article is for reference only, and we hope it can help everyone!