Verticillium wilt seriously causes the end of eggplant harvest how to control eggplant Verticillium wilt

Eggplant "half crazy", also known as eggplant Verticillium wilt, also known as black heart disease. In the early stage of the disease, the edges and veins of eggplant leaves turned yellow, and gradually developed into the whole leaf or half of the leaf turned yellow. The main vein of eggplant leaves bends to grow, deviates to one side, and the leaves are uneven. Early diseased leaves, sunny and high temperature, wilting, sooner or later or rainy days, can recover, later diseased leaves, from yellow to brown gradually withered, leaf edge curled up, severe eggplant leaves turn brown and fall off. Verticillium wilt is one of the main diseases of eggplant.

Verticillium wilt of eggplant

Eggplant Verticillium wilt is a fungal disease. The pathogen spread with wind, rain, irrigation water and agricultural operation. The disease was aggravated with high temperature and humidity. The growth temperature of the pathogen was 20-25 ℃. In addition, eggplant planted too early, transplanting roots with soil, root injury, soil buried too deep, continuous cropping less than 3 ~ 4 years, the use of immature farm manure, excessive use of nitrogen fertilizer can cause the occurrence of the disease.

Prevention and control methods: one is to choose the method of grafting to cultivate seedlings. Second, rotation with non-Solanaceae crops for more than 4 years. The third is to increase the application of organic fertilizer and rational application of phosphorus and potassium fertilizer. Fourth, reasonable close planting. Fifth, timely watering to improve the disease resistance of eggplant. Sixth, in the early stage of the disease, the root was irrigated with 500 times of carbendazim wettable powder or 800 times of Jiatuo, 500 ml of medicine solution per plant, about once every 7 days, for 3 times. The diseased eggplant can be removed to avoid cross-infection. And use metronitrite. Carbendazim was used for spray control.