Eggplant verticillium pests and diseases prevention and treatment of disease diagnosis of eggplant can not enter the disease, but the incidence of disease after the door tomato set fruit increased, the disease, plant disease, dwarf diseased plants, weak growth, and more from the upper part of the upper leaf disease development, or There is a disease on the whole plant. In the early stage of disease, leaf margins or veins turn green and yellow, and gradually develop to half of the leaves or the entire leaves turn yellow, or yellow mottled, or palmate yellow spots, the diseased leaves in early days before and after noon, the leaves wilted, sooner or later or rainy days can still be restore. After a few days, the plants withered completely, and the yellowing of the leaves became black and dry, and the leaf margins curled slightly. When the leaves were heavy, the whole leaves became brown and dry off. In later stages, the leaves of the diseased plants often fall out of light, and the plants show light poles or a few leaves on the top of the leaves. Finally, the plants are wilted and withered. Verticillium wilt is a disease of the whole plant system. The root, stem, branch and petiole of the diseased plant were seen as brown. Severe diseased fruit is small in size, hard in quality, and long in eggplant in a curved shape. The vascular bundle becomes yellow-brown when the mature fruit is cut open. The pathogen is Verticillium dahliae. Conidiophores erect, longer, with 2-4 layers of rostral branches, each branch with 3-5 branches, producing conidia at the apical and branch apical. Conidia unit, elliptic, colorless. Mycelia can form crust spores or aggregate to form pseudocysts. Prevention and control measures (1) Selection of resistant (resistant) disease varieties, such as Changjiang No.1, Fengyan No.1, and seaweed. (2) Using seed collected from disease-free fields, general seeds should be strictly disinfected, soaked in 55-degree warm water for 15 minutes, or soaked in 50% carbendazim WP 500-fold for 1 hour, or with active ingredient 0 The 1% carbendazim hydrochloride plus 0.1% of the flat soaking seeds was better for 1 hour. When seeded, seeds with a seed weight of 0.2% can be used for 80% thiram or 50% captan. (3) Cultivation of disease-free half-seedlings, seedlings for new beds or seedbeds for the use of field soils, and the use of old bacterial beds for bed soil disinfection, combined with anti-male disease treatment. It is best to disinfect seedbeds in heavy areas of Verticillium wilt with cotton, and use 40% of cotton 10-15 grams per square meter and 15 kilograms of dry fine soil to mix thoroughly to make up the medicinal soil, spread it on the bed and infiltrate into the soil of 15 cm. In the layer, after the leveling, the water-covered mulch is used to make it play a fumigating effect, and then sowed every 10-15 days. The seedbed should be applied with net excrement. It is necessary to manage seedlings, wet, light and gas in the seedbed and cultivate disease-free strong seedlings. It is better to cultivate seedlings for seedlings. (4) Eggplant and other solanaceous vegetables should be stopped for 3-4 years in severely diseased areas. It is better to turn in leeks and onions and garlic, and if it works with rice for one year, it can receive obvious results. (5) Planting land for early ploughing and soil preparation, and protecting the land for early use. When the soil temperature in the 10 cm soil layer is stable at 15 degrees or more, select eye-catching planting at noon and focus on planting, so as to minimize root damage. (6) Field management after planting, to promote root extension and hair growth as the center, early attention should be paid to raising soil temperature and increasing soil permeability. To this end, irrigation should be diligently poured water, eye-water irrigation, not over the cold well water. After irrigating, the cultivator should be cultivated in time. During the growth of the aubergine, it is advisable to keep the soil surface moist by irrigating without cracking. For the medium-tillage cultivation, the cultivator for the purpose of increasing the soil temperature in the early stage can be slightly deeper; the cultivator for the purpose of protecting the hoe and cracking can be shallow in the later stage. (7) Apply adequately decomposed manure to avoid partial application of nitrogen fertilizer and increase phosphorus and potassium fertilizers. The amount of topdressing should be appropriate to avoid chemical fertilizers burning the root system. After harvesting the door, the eggplant was topdressed in time and sprayed with foliar lobe, Aiduofeng, etc. to increase plant resistance to disease. (8) The colonization site has been onset, and 50% carbendazim may be applied at the time of regular planting, with carbendazim 15-22.5 kg per hectare. (9) 50% carbendazim WP 500 times, or 12.5% ​​carbendazim solvent 250 times, or 50% citrate copper WP wettable powder 350 times Irrigation, 0.5 kg per strain. (10) In recent years, the application of eggplant grafting to control Verticillium wilt has been very effective. The method of grafting is preferably splicing and splicing (mocking).
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