The prevention and treatment of apple fungal heart disease should be combined with the method of controlling the growth phase of the drug and the control of storage conditions during the storage period.
First, the growth of the chemical control 1. Flower buds to the red period of medication. Combining the control of apple powdery mildew and others, it is possible to select bactericidal agents with good permeability and therapeutic properties, such as: 30% difenoconazole cyproconazole suspension 1000-1500 times or 430 grams per liter tebuconazole suspension 2000 ~ 3000 times of liquid, 1.5% of thimethone water emulsion 500 times, to eradicate the spores of pathogenic bacteria produced on branches and stems.
2 early flowering medication. Choose a fungicide that has no effect on fruit set, to eliminate germs on the flower. Such as 3% multi-antimycin agent 400 times, or 4% agricultural anti-120 agent 600 to 800 times, 80% mancozeb WP 700 times.
3. The young fruit medication. This is a critical period for the prevention and treatment of mycotic heart disease. The systemic fungicide should be selected 10 days after the apple is dropped, combined with the control of apple ringworm, anthrax, and 430 g/l tebuconazole suspension 4000-5000 times, or 10% difenoconazole water dispersible granules 3000 to 4000 times, 70% phospine aluminum manganese zinc wettable powder 1000 times.
Second, after the harvest prevention and control of those who have poor hardness, fruit lack luster of the fruit, should be removed, put an end to storage. If conditions permit, they can be pre-stored in a short-term storage at 10°C to 15°C, and after removing the disease, they can be stored in an air-conditioned cold store.
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