Peach tree diseases mainly include brown spot perforation, black spot disease, ulcer disease, anthracnose, round root rot, bacterial perforation and the like.
Brown spot perforation: It mainly harms the leaves and can also harm new shoots and fruits. Low temperature and rain are good for disease occurrence and epidemic. Generally, after falling flowers, spray green hen 80% mancozeb 500-800 times liquid, or green heng 50% more manganese zinc 500-800 times liquid, green heng 250 grams / liter of difenocarbazole 3000-5000 times Liquid, green hen 250 g / liter of propiconazole 1500-2000 times, green hen 70% sulphur · manganese zinc 400-600 times solution, 7-10 days of prevention, a total of 3-4 times.
Bacterial perforation: It mainly damages leaves and can infect fruits and shoots. It usually occurs in May and is severely affected from July to August. It can be controlled by Greenheng 50% Chunlei·carbendazim 600-800 times liquid, green heng 30% basic copper sulfate 500-800 times liquid, and green heng 6th 1000-1500 times liquid.
Black spot disease: also known as scab, mainly harmful to the fruit, began to develop in June, and entered the peak period from July to August. spring,
Summer and rain are prone to disease. 15 days after the flowering, spray green hen 80% mancozeb 500-800 times liquid, Luheng 2 700-800 times liquid or green heng 250 grams / liter of difenoconazole 2000-2500 times for prevention, Once every 15 days, it can be prevented until July.
Ulcer disease: generally harms the fruit. It starts from 1 week after Xiehua, and sprays the medicine once every 15 days to protect the fruit. You can choose green hen 50% spring lei carbendazim 600-800 times liquid, green heng 25% leaf carbazole 600 -800 times liquid spray.
Anthrax: mainly harms the fruit. After the flower falls, it sprays 800 times of Greenheng 3 or 1000 times of Luheng 6 or Greenheng 50%·Mn Zn 1500-2000 times, Greenheng 80% Mancozeb or green Heng 250 g / liter of propiconazole 1500-2000 times liquid or green heng 250 grams / liter of difenoconazole 2000-2500 times solution for prevention.
Round root rot: mainly damages the roots, mostly occurs in the April-May period after the germination of peach trees, and the diseased plant rate is as high as 30%. Use Greenheng 3 No. 600-800 times liquid, or Luheng No. 1 3000-5000 times liquid, or Luheng No. 6 1000-1500 times liquid or Luheng No. 9 600-800 times liquid.
More pesticide knowledge , please pay attention to China Pesticide Network
(Source: Aihua Plant Protection)
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