How to treat apple water crack and fruit shrinkage disease? What kind of medicine should I take?

Apple fruit surface crack is a common physiological disease in recent years, and fruit growers generally call it apple crack disease. Fruit shrinkage disease is small deformity, easy to fall early. How to treat the apple water crack and fruit shrinkage disease? What kind of medicine should I take?

How to treat apple water crack? What kind of medicine should I take?

1. Increase the application of bio-organic fertilizer to enhance the tree potential and improve the tree regulation ability and stress resistance.

two。 Adequate water supply should be ensured within 40 days after flowering, and regular appropriate amount of water should be irrigated during the fruit expansion period to ensure that the pericarp cells and pulp cells expand steadily at a uniform speed.

3. Optimize the tree shape, dredge too many branches, open the light path, dredge the waterway, reduce the humidity in the crown, reduce the crown area with low light efficiency, and create favorable conditions for uniform coloring of fruits.

4. At the young fruit stage, pesticides that are irritating to pericarp cells should be used as little as possible, and the technology of growing grass in orchards should be actively promoted to regulate the supply of soil water and nitrogen.

5. When bagging, the mouth of the bag must be tied tightly, and Rain Water's smooth fruit handle should not be allowed to flow into the fruit bag.

6. Avoid hot, windy, hot and hot weather when taking off the paper bag.

How to treat apple fruit shrinkage disease? What kind of medicine should I take?

The disease is mainly caused by the lack of boron in the soil for the growth and development of apple trees. Boron is especially needed at flowering stage, and timely boron supplementation is very important for the treatment of fruit shrinkage disease.

Prevention and control methods: 1. Strengthen cultivation management and increase the application of fully mature organic fertilizer or organic-inorganic biological compound fertilizer containing humic acid. According to the proportion of N, P, K 2 ∶ 1 ∶ 2 required for the growth of apple trees, the water-soluble fertilizers of Eurasian and American or Jindongkabao, which are rich in nitrogen, phosphorus, potassium and various trace elements, were sprayed to enhance the disease resistance of apple trees.

two。 Boron fertilizer was applied at the bottom. In autumn or spring, according to different tree ages, or according to the trunk diameter of 33 cm above the ground, if the trunk diameter is 8cm 17cm, 23cm 26cm, 33cm or more, each plant is applied with 95% borax 50g 150g, 200kg 350g, 350kg 500g, and then watered.

3. Boron spray on the leaves. Before and after flowering and during the expansion period of young fruit, the whole plant was sprayed with 200 × 250-fold borax solution or 750-fold solution of Caruli boron and 300-fold solution of zinc, calcium and boron for 2 or 3 times.