Now be careful about eggplant blight

Eggplant Mushroom Disease commonly known as hanging eggs, water, is one of the important diseases of eggplant. In summer, especially during the onset of the rainy season, high temperatures and high humidity are more conducive to the occurrence of this disease. The disease has a fast onset, heavy damage, and large losses. It should be highly valued to achieve early detection and early treatment so as to avoid unnecessary economic losses to vegetable farmers.

Symptoms:

Onset of seedlings, the base of the embryonic stem was water-stained and soon fell down, causing the seedlings to die. In adult stage, the leaves are susceptible to disease, and water-stained, irregular-shaped lesions begin to appear, with obvious ring patterns, and then develop into brown or purple brown. The stems suffer from water-stained contracture or breakage and grow white mold. The flower was damaged and brownishly rotted. The fruit was the most affected and began to have watery, round spots. The edge was not obvious, and it was slightly sunken. The incidence was very fast. Under high temperature conditions, after a night, the fruit was dark brown and rotten. The fruit spot grew white. Flocculous mycelia, causing fruit pedicle, or contraction into a stiff fruit.

Incidence rule:

The disease is a fungal disease caused by parasitic disease caused by P. capsici. The oospores of the bacteria are splashed on the plant body by the rain and germinate. The adherents are produced and the hyphae grow. The host epidermis directly invades the diseased part, and the zoospores released by the sporangial sac expands and spreads, further expanding the disease. spread. High temperature and high humidity are conducive to the development of the disease, generally the temperature is 25 ~ 30 °C, relative humidity is above 85%, plant surface water, disease development is rapid and serious. Low-lying terrain, poor drainage, continuous rain, heavy soils, excessive nitrogen fertilizer application, excessive density, and heavy cropping are all conditions for this disease to occur.

Control methods:

1. Agricultural control. Selection of disease-resistant varieties, such as purple light eggplant, open election No. 1, Liaoqian No. 3 and Jinan small long eggplant and so on. With non-solanum, gourd vegetables to implement 2 to 3 years of rotation. The use of sorghum planting, timely drainage and dehumidification, apply enough base fertilizer, increase phosphorus, potassium fertilizer. Foliar spraying of potassium dihydrogen phosphate, Yongye lifeline to enhance the resistance of eggplant disease. Timely pruning, timely removal of diseased leaves, old leaves, and keeping the fields air and light, these measures have the effect of reducing the disease.

2. Chemical control. To be preventive, the pharmaceutical must be prevented early and early. At the beginning of the disease, 80% triethylaluminum phosphate (ethylaluminophosphate, phytoplankton) may be sprayed 600 times, or 58% metalaxyl MnZn wettable powder 500 times, or 72.2% Preclosure 800 times, each Every 7 to 10 days spray once, even spray 3 to 4 times.

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