What should be noted for citrus overwintering?

Now we have entered late autumn, and the weather is gradually turning cooler. Of course, citrus has also reached the harvest season. For citrus growers, this is the season of harvest after a year of hard work. But it is also a season of worry for growers, because autumn is about to begin, and if winter management is improper, next year's harvest may be affected. Below, let's take a look with the editor at the four hazards that need to be prevented during citrus overwintering.

1. Frost damage

The degree and site of frost damage to citrus vary somewhat depending on temperature drop and frost duration. Different citrus varieties, or different organs of the same fruit tree species, also have different critical low temperatures for damage. Under normal circumstances, fruit growers use smoke to prevent frost, which can reduce the loss of ground heat, but during operation attention should be paid to safety, and smoke should not cause other harm to the fruit trees. If conditions permit, heaters can be used, which can also effectively raise the temperature in the orchard and prevent frost.

2. Freeze damage

During the overwintering period, the resistance of each growing organ of fruit trees to low temperatures differs. If branches and buds suffer freeze damage, it may very likely affect the yield of the following year, and in severe cases cause entire branches to die, greatly affecting fruit tree production. There are also many causes of freeze damage, and comprehensive control should be used during production. For example, when freeze damage occurs, light pruning and late pruning can be done, sufficient water should be ensured in the early stage, timely topdressing should be applied, and nutrition should be maintained to restore tree vigor as soon as possible.

Strong winds can also cause uneven crowns or off-center growth in fruit trees. In winter, strong winds can even cause young trees to dry out and die. Dry winds in spring can also scorch new shoots and tender leaves of fruit trees, shorten the flowering period, reduce the fruit-setting rate, and directly affect yield. When there are strong winds during the flowering period, artificial pollination can be used to increase the fruit-setting rate. If there is wind during the production season, support poles should be set up promptly to tie the fruit, preventing lodging and broken branches. When there is strong wind during the harvest period, the tree disk can be deeply turned or grass can be spread over the tree disk to reduce fruit drop.

4. Twig dieback

Twig dieback occurs relatively seriously in young Orah mandarin trees, often causing tree shape disorder and affecting early fruiting. The method to prevent twig dieback is to apply more fertilizer water in the early growth stage of young trees, apply more phosphorus and potassium fertilizer in the later stage, and carry out scientific and reasonable pinching to promote strong branch growth and improve the overwintering ability of young trees.

  The above is an introduction to the precautions for citrus overwintering. We hope it can help you. To learn more related knowledge, please follow us.