Eggplant Verticillium wilt, commonly known as blight, half mad, and black heart disease, is one of the important diseases of eggplant. The disease usually starts after the fruit is covered in the door. The disease generally develops from bottom to top or from one side to the whole plant, with yellow veins and wilting leaves. Symptoms at the beginning of noon were significant, and the recovery was approximately normal in the morning, evening, or cloudy days. The leaves of the whole plant or part of the branches later fell off and severe plant death occurred. Verticillium wilt is caused by fungal infection. The pathogen's dormant mycelium, chlamydospore, and sclerotia are overwintering in the soil with the diseased body and become the primary source of dipping in the following year. They can generally survive in the soil for 6-8 years. Therefore, the carrier soil is the main source of germs. Germs can also overwinter in the seeds with mycelium and conidia, and can spread with seeds over long distances, becoming the source of disease-free areas. In addition, the application of compost with diseased bodies can also spread diseases; the pathogens are spread in the fields mainly by wind, rain, irrigation water, farm implements and agricultural operations. Climatic conditions have a greater impact on the occurrence of diseases. Temperatures ranged from 19°C to 24°C. Soil moisture was heavy. Drought and high temperatures were mild. The temperature exceeded 38°C and the disease was inhibited. Its prevention and control methods are as follows: (1) The most effective method of prevention is to use Torubumba and CRP for rootstock grafting. (2) Select resistant varieties. Purple eggplant varieties are more resistant than green eggplant varieties. (3) Seed disinfection. Before sowing, they were soaked with carbendazim for two hours or soaked in constant temperature water at 55°C for 15 minutes, and germination after cooling. (4) To cultivate age-appropriate seedlings, strengthen management, and create suitable environmental conditions for the growth and development of eggplant. (5) Implementing crop rotation, 4-5 years without continuous cropping with eggplant. More farmland fertilizer, the land should be deep turned. (6) timely planting, with more soil and less root damage, planting seedlings should not be too deep, after planting selected sunny days when the temperature is high, so as to avoid ground temperature drop, strengthen field management. (7) Chemical control: 3 kg of 50% carbendazim wettable powder can be applied every 667 m2 during site preparation and dipping into soil. Can also be used after the colonization with 50% carbendazim WP Irrigate the root, 300mL per irrigating solution, even irrigation 2 times.
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