Prevention methods: 1. Adjust the temperature and humidity in the shed and strengthen ventilation management. 2, remove the sick, found diseased leaves, diseased stems, diseased branches or diseased fruit timely removal, bring out the shed to be buried, the main culms on the lesion can be scraped off in a timely manner to wipe the drug, reduce the source of the disease. 3, pharmaceutical control, with 80% spray grams of WP 500 times spray, according to our province in Shouguang, Zhangdian, Linyi, Taian and other multi-point test, the general disease control efficiency reached 95%, for serious sheds Control effectiveness can reach more than 77%. In addition, it can be alternately used with 25% metalaxyl WP 500 times or 50% acetaminophen WP 800 times, and 25% metalaxyl or fluocin plus 78% can be used for stem lesions. Cobo wettable powder is formulated as a 200 times concentrated liquid to smear the diseased part, once every 5-7 days, and once every 2-3 times, the control effect is better.
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