In the recent investigations in the countryside, it was found that the eggplant cultivars planted by vegetable growers have more severe disease. The eggplant plant leaves have different degrees of yellowing, followed by wilting and shrinking. There are no obvious lesions on the leaves, and there are brown contractions around the root and neck. The roots showed brownish color, and some were plaques. The root epidermis gradually sloughed off and then rotted. The severe whole plant died, but the petiole and the stem above the ground did not have lesions, which greatly affected the yield. This is an eggplant infected with root rot. It is a fungus-like soil-borne disease. The humidity in the shelter is low, and the diseased plants with high temperatures and relative humidity above 85% have high rates. In particular, some plots, clay plots, low-lying plots, and high salinization plots are the re-emerging areas of eggplant root rot.
In order to avoid or reduce the damage of root rot to eggplant, it is necessary to start with agricultural measures and combine with chemical control to improve the comprehensive control effect.
From the aspect of agricultural measures, the first is to implement as many as possible three-year rotations with onions and garlic-based vegetables. Where conditions permit, it is best to use rice and paddy crop rotations to make the bacteria suffocate. The second is the application of enzymes. Preparation of bio-organic compound fertilizer, 100 kg per mu, or 200 kg of commercial organic fertilizer, or 5,000 kg of decomposed organic fertilizer bred by farmers themselves as base fertilizer, can improve the soil, inhibit the harm of bacteria; Third, the implementation of high-ridge cultivation, Reduce the water table and the humidity in the greenhouse to reduce the damage. Fourth, after discovering the diseased eggplant, the dead plant should be pulled out of the field and buried deep or burned in a concentrated manner. The sick hole should be immediately disinfected with quicklime.
From the aspect of chemical prevention and control, the first is to treat the soil of the transplanted fields, and 50% carbendazim wettable powder can be used. Mixing 2 kg per mu to 50 kg of fine soil mixes poisonous soil, and apply them into the hole before planting seedlings; The second is the use of drugs in the early stages of the disease to irrigate the roots of the diseased plants, available copper sulfate 2000 times, 50% thiophanate-methyl WP 500 to 800 times or 50% carbendazim WP 500 times, etc. The strains were irrigated with a solution of 250 ml or so and irrigated once every 7 to 10 days.
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