Eggplant anthracnose is one of the common diseases of eggplant, mainly affecting eggplant fruit, mostly in eggplant plants with weak growth, high nitrogen fertilizer application, poor drainage performance and poor aeration. Therefore, today, Xiaobian says eggplant anthrax. The disease is harmful to the fruit and the prevention and treatment methods, I hope to help everyone.
1. What are the hazards of eggplant anthracnose on fruits?
1, initial harm symptoms
The surface of the fruit will produce a nearly round, elliptical or irregular black-brown, slightly sunken lesion, which will spread to half the fruit after confluence.
2, late hazard symptoms
There will be black dots on the surface of the fruit. When the growth environment is damp, the reddish mucus will appear. The flesh damaged by the disease will be brown and dry, which will cause the fruit to rot.
3. The main difference between eggplant anthracnose and eggplant brown streak disease
Eggplant brown streak is dark brown to black, the leaves are irregular lesions, and black small grain spots will grow in the later stage, which will lead to fruit decay in severe cases.
Second, how to prevent eggplant anthracnose?
1, the implementation of rotation
Two or three years of rotation with non-solanaceae vegetables during planting.
2, seed selection
When planting, choose robust, disease-free seeds.
3, seed treatment
Soak the seeds with warm water at 55 degrees before sowing, then soak the seeds in water for 7-8 hours.
4, seed colonization
Choose the appropriate time for colonization, and establish a reasonable planting density when planting.
5, rational fertilization
In the application of fertilizer, it is not possible to focus on the application of nitrogen fertilizer, and it is necessary to increase the phosphate fertilizer and potassium fertilizer appropriately.
6, watering management
According to the timely growth of the eggplant plant, water should be drained in time.
7. While protecting the cultivated land, avoid the high temperature and high humidity growth environment.
8. Remove the diseased fruits in time to avoid affecting the healthy growth of other fruits.
9. Pest control
a, the initial stage of the disease:
25% acrylonitrile wettable powder 500 times liquid + 70% Daisen joint dry suspension agent 800 times liquid;
5% imidazole wettable powder 1000 times liquid + 75% chlorothalonil wettable powder 600 times liquid;
10% difenoconazole water dispersible granules 1500 times liquid + 22.7% dicyanohydrazide suspension suspending agent 1000-1500 times liquid;
40% more • Fu • bromine nitrile wettable powder 800-1000 times liquid;
70% Fu • A • sulfur wettable powder 600-800 times solution;
Spray once every 7-10 days for prevention.
b, the disease occurrence period:
120% pyraclostrobin water-dispersible granules 1500 times liquid + 70% mancozeb wettable powder 600-800 times liquid;
20% phenyl ether • prochloraz microemulsion 2500-3500 times solution;
30% EC tiaprofenic thiocyanate 1000-1500 times solution + propineb 70% wettable powder 700 times;
5% imidazole wettable powder 800-1000 times liquid + 75% chlorothalonil wettable powder 600 times liquid;
Spray once every 7-10 days for prevention.
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