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Chemical control of eggplant Verticillium wilt
Eggplant Verticillium wilt is a kind of soil-borne disease, commonly known as half-heart disease or black heart disease. Both open and protected areas occur. In recent years, due to the continuous cropping of eggplants in greenhouses, soil-borne diseases such as verticillium wilt have been increasing year by year. After the onset of illness, it generally reduces production by 10% to 40%. In severe cases, the loss is even greater. At present, the grafting method can effectively prevent the occurrence of Verticillium wilt, but it should be used for the prevention and treatment of eggplant that has already developed, so as to reduce the economic loss. Verticillium wilt identification method: from transplanting to maturity can be the disease, the early symptoms are not obvious, generally at the adult stage began to show symptoms. In the early stage of disease, the leaf blades and veins turn yellow and gradually develop into half or yellowing of the whole plant. In sunny days, the diseased plants will wilt at high temperatures and can recover at night or on cloudy days. When the soil moisture is high and the ground temperature is low, it is easy to occur seriously. When the disease is heavy, the entire leaf becomes yellow-brown and the plants become light rods. Eggplant verticillium wilt disease is a plant-wide disease. Branches and petioles are cut longitudinally to see that the interior becomes brown and the diseased plant is short. Chemical control methods: Irrigate the roots with 10% of Secodispersed granules 100 times solution or 50% carbendazim WP 500 times, injecting once every 7 days at the beginning of the disease, and 2-3 times with irrigation. Obviously reduce the damage of eggplant Verticillium wilt.