Onion purple spot disease is a fungal disease caused by A. grisea. We should take appropriate measures in advance to prevent onion purple spot disease. Linyi Fertilizer Network Copyright
How should onion purple spot disease be prevented? Linyi Fertilizer Network Copyright
I. Onion Purple Spot Disease Agricultural Control Linyi Fertilizer Network Copyright
Apply more base fertilizer and top dressing to make the onion grow stronger and strengthen disease resistance. After the onset, it is necessary to control the irrigation to reduce the soil moisture and prevent the Hummer from being prevented from causing wounds. Linyi Fertilizer Network Copyright
Second, onion purple spot disease drug control Linyi Fertilizer Network Copyright
The seeds were soaked in 40% formaldehyde 300 times solution for 3 hours, and washed in time after immersion. In the early stage of the disease, spray 75% chlorothalonil WP 600 times solution, 64% antivirus WP WP 500 times solution, 80% green Henson manganese zinc 500 times solution, 40% Dafudan 500 times solution, 50% Sprayed by 1500 times liquid, 2% polymycin 30ppm, 50% kelicin 30-50g, onion and garlic pathogen. Any one of the above agents may be used, and various agents should be used alternately, once every 7-10 days, and continuously controlled 3 times. Add 5-10 grams of neutral detergent to each 10 kg of liquid to increase the adhesion of the solution. Linyi Fertilizer Network Copyright
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