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What diseases and pests should be prevented in mid-summer apple
1, Peach fruit borer. The peach borer suffers from larvae and causes fruit development malformation, resulting in "herbiferous fruit", "red bean paste" and so on. The commonly used agent is 2.5% kungfu 1500 times liquid, or chlorpyrifos (imported drug name is Lebenben) 1000 times. 2. Ringworm disease and anthrax. At the early stage of the onset of round vein pain, water-stained brown spots were formed on the fruit surface, which quickly expanded to brown spots. In the early stage of anthrax, brown dots appear on the fruit surface, and after enlargement, the lesions are conically trapped in the flesh. Available 50% sulfur suspension 200 times or round rotten net 300 to 500 times or strychnine 300 times spray. 3, evil. After July, an average of 7 to 8 active pods per leaf should be sprayed and controlled. The commonly used agent is 4.5% high-efficiency chrysanthemum milk 2000 times liquid plus spider aphid. 4, rot disease. In July and August, rot bacteria began to spread in the skin layer of fruit trees to form surface ulcers. To this end, regular scraping and disinfection were to be maintained, and scraped-off diseases should be cleared out of the park, buried deeply, and at the lesions. Applicator (generally, the rot must be clear liquid or 2 times the best smearing effect), while the main trunk, the main branch and big lateral branches coated with drugs to remove the initial infection of the bacteria. Take care not to touch the leaves with the liquid to avoid phytotoxicity. 5, gold pattern fine moth. In early July and early August, they are the critical period for the control of the second and third generation larvae of the golden moth, respectively. The use of 2.5% kungfu 1500 times is better, and it can also prevent and treat peach borer. If these diseases occur at the same time, they can also be treated with fungicidal insecticides and acaricides at the same time, that is, 800 times of carbendazim become 800 times more profitable or 800 times more, plus 1500 times 2.5% kung fu or 1000 times more chlorpyrifos or 2000 times more efficient Cypermethrin plus spider paralysis, plus 2000 times times power.