Points for attention after Apple bagging

Apple is widely planted in China and is one of the most popular fruits. With the development of science and technology, many fruit growers have found that bagging apples can keep them hydrated and colored earlier. So bagging technology is becoming more and more widespread, but there are still many management skills after bagging apples. Here's what you need to pay attention to after bagging.

1. Prevention and control of brown spot

Apple tree bagging is generally before the rainy and hot season, when entering this season, is the high incidence period of brown spot. Do not think that after bagging the apple will not produce brown spot disease, at this time should pay more attention to the harm of brown spot disease, brown spot disease will harm the leaves, resulting in withered and yellow leaves in the early stage of falling leaves, resulting in great obstacles to the growth and development of apples. Organic fungicides such as diphenyl ether nail ring files can be used for spraying at least twice.

2. Prevent insect pests

Because the bag is not sealed after bagging, some diseases and insects may be produced in the bag, such as red and white spiders, aphids and so on. Among them, the harm of red and white spiders is the greatest, because of entering the high temperature weather, the growth period of red and white spiders is shortened and the number of eggs laid is increased. Red and white spiders will gnaw on apple leaves, and serious ones will prevent the leaves from photosynthesis or even deciduous leaves, seriously affecting the normal growth of apples. If there is no careful inspection and control in the early stage, the outbreak of insect pests in the later stage is very difficult to control.

3. Control the growth rate of branches.

In high temperature and rainy weather, apple trees will also grow to a certain extent, especially the top shoots. But be sure to cut off the overgrown top branches properly, because the excessive growth of branches will not only grab nutrients with leaves and fruits, but also cover up all the branches of fruit trees when they are dense, resulting in poor orchard permeability, lack of ventilation and light at the bottom, and affecting the quality of apples. The branches that grow out of the tip should be cut to the level of the rest of the branches, and the new leaves should be removed from the new branches to promote flower formation.

4. Supplement phosphate and potassium fertilizer

Phosphorus and potassium fertilizer is the best fertilizer to promote the expansion of apple, the mid-ripening product is about 7.15, and the late ripening is around the Mid-Autumn Festival. The main purpose is to supplement trace elements to apple trees, promote apple expansion, and improve yield and quality.

5. Water management

In case of drought, water should be replenished in time, because the drought will reduce the moisture in the soil, and the apple roots will not be able to develop normally and absorb nutrients to transfer to the whole tree. And too much water in the orchard during the rainstorm will also affect the normal growth of the root, the root can not breathe, naturally affecting the absorption and transfer of nutrients. It is best to increase the temperature difference between day and night, which is beneficial to the coloring of the apple.

Well, these are the things you should pay attention to after Apple bagging. Need to pay special attention to the water and insect pests this area, many people think that bagging is to prevent disease, in fact, apple bagging is to protect the fruit surface and promote coloring. So after bagging, we should pay close attention to the situation of the apple tree, and if there is any abnormal situation, we should deal with it immediately.