Eggplant verticillium wilt disease control measures

Eggplant verticillium wilt, commonly known as half madness and black heart disease, is a high incidence in the production and cultivation of eggplant. If the disease occurs and the treatment is not timely, it often causes a large area of ​​dead seedlings, causing great losses in production. Now we introduce the identification and prevention of the disease as follows.

l, hazard characteristics. The disease began after onset of eggplant disease. Leaf lesions were initially felt from the lower leaves of the plants, and the leaf veins and the leaf margins of the near petioles yellowed and the margins of the leaves rose slightly. Lesions often appeared on the sides of the leaves, causing the leaves to distort and causing the photosynthesis of the leaves to fail. In severe cases, the entire plant leaves yellow and wilting until it comes off. The diseased plants showed symptoms of dwarfism, no spreading of branches and leaves, and the disease was small and curved.

2. cause. The disease is caused by infection with verticillium subsp. verticillium (fungi). The pathogenic bacteria are more attached to the diseased leaf disease residues in the soil and overwintering, spreading with the field fertilization and irrigation, and once a year. The bacteria infested the wounds caused by the wounds at the time of colonization. Low temperature (the daily average temperature below 15°C) is a high-humidity environment, and the heavy land masses and base fertilizer deficiency fields are all susceptible to disease.

3, prevention measures. (1) Rotation of crop rotation, emphasis on basal fertilizer, and improvement of soil fertility in cultivation. The planting of eggplant should be carried out for more than four years with non-solanum vegetables, and the application of high-quality decomposed organic fertilizer and compound fertilizer. Pay attention to balanced fertilization. (2) Impregnation (mixed) species. In the process of seed germination treatment, 50% carbendazim wettable powder can be soaked in 500 times solution for 2 hours, and the seedbed can also be treated with the agent at the time of sowing. (3) Diligent inspection, diseased plants found, timely removal and centralized burning or deep burial outside the shed. (4) Pharmacy treatment, after planting and culturing, 50% of chlorhexidine WP was used to irrigate the roots, and 0.3 kg per plant was used. The irrigating solution was applied once every 10 days, and the drug was continuously applied 2-3 times.

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