Control methods of citrus sunburn disease

Citrus sunburn disease, also known as sunburn disease, is a disease when citrus fruit is really ripening. The main reason is that in summer and autumn high temperature season, the fruit is exposed to intense sunlight, which causes the surface temperature of the fruit to reach more than 40 degrees. It will appear brown disease spot on the fruit, gradually expand, and finally the pericarp cortex hardens, the pulp is ligneous, loses edible value, and affects the income of fruit growers. So how to prevent and cure sunburn? Let's have a look with the editor.

1. Irrigation and cooling

When the high temperature comes, irrigate and spray the plants in time, which can replenish the nutrients of the plants in time, avoid the symptoms of water shortage and aggravate sunburn because of excessive transpiration. At the same time, the use of spray can reduce the temperature on the surface of fruits, leaves and branches, avoid drought and make trees grow normally.

2. Digging deep into the garden soil

Turning the garden soil next to the plant to a depth of more than 30 cm can promote the root growth of citrus plants, thus improving the absorption capacity and scope of the roots, and forming a balance between aboveground consumption and underground consumption, which can help nutrients to meet the growth of the plant. reduce the harm caused by sunburn.

3. Spraying lime water or whitening

We all know that whitening fruit trees in winter can protect against cold and cold, but it is also a good way to whiten citrus plants here, which is in the middle and upper part of the canopy prone to sunburn. For orchards with severe sunburn, you can spray fruits and crowns with 1% murine 2% limewater to reflect strong light, but pay attention to the concentration of limewater to avoid drug damage.

4. Bagging or sticker

At present, bagging technology is widely used in the fruit growing industry, it can prevent fruit from being disturbed by diseases and insect pests and strong light exposure, and can improve the quality of fruit geese, so giving young fruit can effectively reduce the harm of sunburn disease. In addition, there is a more simple method is to stick paper, the paper is mainly white, generally in the early stage of sunburn, stick the paper on the sunny side of the fruit.

5. Growth regulator

During the occurrence of sunburn, we can spray 5000 times of Aiduo + 1500 times of anthocyanin, which can effectively reduce the degree of sunburn, and the effect is better.

The above is an introduction to the prevention and control of citrus sunburn disease. I hope it can help you. If you want to know more about it, please follow us.