Eggplant is a common vegetable in daily life. There are many delicious methods of purple eggplant, and it is also popular among people. Many farmers will grow their own eggplants. Eggplants often have early blight and plague. Do you know the symptoms of early blight and mites? How to prevent it? Let's take a look at the farmer's Xiaobian!
Eggplant early blight
Hazard characteristics
Mainly harmful to leaves and fruits.
Leaf disease: In the early stage, round or nearly round lesions are produced, the edges are brown, the middle part is grayish white, and there are concentric wheel patterns. When the humidity is high, the disease minister has fine gray-black mildew; the middle part of the lesion is brittle, and the diseased leaves are severe. Fall off early. Stem symptoms are the same as leaves.
Fruit onset: Produces brown, round to irregular, concave spots, and grows black-green mold layer when humidity is high.
Control method
1 Carry out rotation for more than 3 years; apply fully decomposed organic fertilizer, increase potassium and phosphate fertilizer, enhance tree potential; timely remove diseased diseased branches; rationally close planting, timely drainage after rain, keep ventilation and light, reduce humidity.
2 Before planting, the seeds can be immersed in warm water at 52 °C for 30 minutes to cool, or 2.5% flavonoids can be used for seeding and drying, and then germinated for sowing; the shed can be disinfected with sulfur smoke for one night.
3 In the early stage of the disease, the following agents can be used for prevention and treatment: 75% sputum • tebuconazole water-dispersible granules 2000～3500 times solution; 80% mancozeb WP 600 times solution; or 75% chlorothalonil wettability Powder 600 ~ 800 times the solution, depending on the condition 7 to 10 days spray once.
Eggplant plague
Hazard characteristics
Mainly harmful to the fruit, but also harmful leaves, stems, flowers. The seedlings were killed and the base of the stem was water-soaked and necrotic, causing the trip to fall, causing the seedlings to die.
In the early stage of the adult stage, there are water-immersed, round, concave, yellow-brown lesions with a wheel pattern. And the expansion is very rapid, gradually rot the whole fruit. When it is wet, white cotton batt grows on the lesions, and the flesh is brownish black, rot, easy to fall off or dry and shrink into a stiff fruit.
Control method
1 Select resistant varieties; rotate for more than 2 years; apply sufficient decomposed organic fertilizer, increase phosphorus and potassium fertilizer, enhance tree potential; timely remove diseased fruit, diseased leaves, deep tillage, reduce the source of disease; rational close planting, timely elimination after rain Water, keep ventilation and breathable.
2 Seed treatment: seed dressing with 2.5% flavonoid suspension seed coating plus 35% refined metalaxyl emulsified seed coating agent.
3 In the early stage of the disease, the following agents can be used for prevention and treatment: 70% mancozeb wettable powder 500-600 times liquid; or 72.2% downy mildew hydrochloric acid salt water 800-1000 times liquid; or 60% fluorine? manganese zinc can Wet powder 800 times solution, spray on water.
After reading the above introduction, I have learned more about eggplant early blight and cotton blight. In fact, eggplant is not terrible, but I don’t know how to deal with it. Therefore, Xiaobian also comes with prevention methods. I hope it will help everyone solve it. The problem of growing eggplants.
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