Before flowering
1. After the garden is cleared in spring, the whole tree is sprayed with a broad-spectrum fungicide to eradicate the pathogenic bacteria latent on the surface and surface of the tree, protect the shear saw edge, and prevent the new cut saw mouth from being infected by the ring pattern fungus and rot disease bacteria in April ~ June. You can choose Bordeaux liquid, or spray 5 Baumé stone sulfur mixture.
2. Before flowering, the whole garden is sprayed with the second agent, mainly to eliminate the hatching or stinging larvae of aphids, red spiders, green blind bugs, leaf curling moths, etc., and protect the young tissues of apples from powdery mildew, rust, mildew disease, flower rot and other diseases during the flowering period.
The second application time is from the red of apple dew to the stage of inflorescence separation. If the application time is too early, the amount of pest sting is small, and the control effect is poor, and the killing effect of pollinators is great if the application time is too late. If the temperature is high and the flower buds develop rapidly, the medication time should be appropriately advanced, and if the temperature is low, the medication time can be appropriately delayed.
After thanking the flowers
1. The first medication after apple flowering is mainly used to prevent and control red spider, mildew heart disease, apple leaf curl moth and ring pattern disease, and also treat aphids, rust, powdery mildew, spotted defoliation, etc. The time of administration is 5~10 days after flowering. In addition, the medication time should be selected according to the occurrence of pests and insects, etc., and the orchard based on the prevention and control of hawthorn red leaf mites has the best effect of medication control in 7~10 days after flowering;
At this stage, the drug is mainly used to protect young fruits, disease prevention, insect treatment, acaricide, calcium supplementation at the same time, 1~2 kinds of fungicides, 1 kind of insecticides, 1 kind of acaricides and 1 kind of calcium supplements can be mixed, and the mixed agents can not exceed 5 kinds. When apples enter the growth period, it is recommended to use professional pesticides, and it is not recommended to use broad-spectrum insecticides, such as pyrethroids and organophosphorus insecticides.
2. The second medication after apple flowering is mainly to protect young fruits and flowers from the infection of ring-streaked fungus, mildew fungus and black spot fungus, and at the same time treat various aphids, rust, spotted defoliation, rot disease, cotton bollworm, red spider, Kang's mealybug, etc. The second dose is 10~15 days after the first dose.
The prevention of diseases and insects before and after the apple blossom is introduced here, I hope it will help you. If you want to buy high-quality and high-yield apples, you can download the Seed Bank App, and the country's excellent apple varieties are available for everyone to choose from.
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