Which diseases and insect pests of apple trees need to be controlled in summer?

Which diseases and insect pests of apple trees need to be controlled in summer? Please introduce the diseases and insect pests that need to be controlled in summer apple trees can refer to the following: 1. Peach heart borer causes fruit decay by larvae, resulting in abnormal fruit development, forming "hericium Erinaceus", "bean paste stuffing" and so on. The commonly used agents are 2.5% kungfu, 1500 times liquid, or chlorpyrifos (imported drug name is Lesben) 1000 times liquid. 2. Ring streak and anthrax ring streak formed small waterlogged brown spots on the fruit surface at the initial stage of the disease, and quickly expanded to show large brown disease spots. In the early stage of anthracnose, brown dots appeared on the fruit surface, and after enlargement, the disease spot became conical and fell into the pulp. You can use 50% sulfur suspension 200 times liquid or wheel rotting net 300 times liquid or Shi Na Ning 300 times liquid spray. 3. After July, when there are an average of 8 active mites per leaf, spraying should be used to control the mites. The commonly used medicament is 4.5% cypermethrin EC 2000 times the solution plus spider mites. 4. From July to August, the rot pathogen began to spread in the dermis of fruit trees, forming surface ulcers. For this reason, it is necessary to adhere to regular curettage and disinfection, clean up the scraped remnants out of the garden, bury them deeply, and apply medicine on the disease spot (generally, the original solution or 2 times solution is the best), and at the same time, apply medicine on the trunk, main branch and large side branches. to get rid of the bacteria that were first infected. Be careful not to make the liquid touch the leaves, so as to avoid drug damage. 5. The first ten days of July and the first ten days of August are the key periods for the control of the second and third generation larvae of Spodoptera litura, respectively. The effect of 2.5% kungfu 1500 times solution is better, and it can also control peach heart borer. If these diseases occur at the same time, fungicides, insecticides and acaricides can also be used to control them at the same time, that is, carbendazim 800x liquid or Bideli 800x liquid or carbendazim 800x liquid, add 2.5% kungfu 1500 times liquid or chlorpyrifos 1000 times solution or cypermethrin 2000 times solution plus spider mites, and then add 2000 times liquid plus prednisone. Click to get more apple tree planting techniques click to get more fruit planting techniques