This spring, low temperature and rainy weather, cabbage prone to Sclerotinia disease, pay attention to early detection. Sclerotial crop disease occurs at the seedling stage of cabbage, and a brownish-brown spot appears on the leaves. The edge is not obvious, and the soft tissue of the diseased tissue causes cataplexy. Injury at the heart of the package caused spotting of water-stained depressions on the leaves and roots near the ground. It began to appear pale brown and later became brown or off-white, and the diseased parts rotted. When the humidity is high, the disease minister produces white fluff and black-brown mycelium, and forms black murine fecal nucleus. One week after root and neck lesions, the whole plant died. Sclerotinia sclerotiorum is a fungal disease caused by S. sclerotiorum infection. The pathogenic bacteria remain in the soil with sclerotia or are mixed in the seeds during summer or winter. Sclerotia germinate in wet conditions, producing ascospores, spread by wind and rain or irrigation water. Low-temperature, low-light, wet and damp diseases are heavy. Excessive application of nitrogen fertilizer, low-lying topography and poor drainage are conducive to disease. To prevent Sclerotinia disease in cabbage, field management should be strengthened. Before the sowing, the land was deeply plowed and the sclerotia remaining on the surface of the land was buried in soil below 10 cm. Before sowing, the bed temperature was adjusted to 55° C. for 2 hours to kill the sclerotia in the soil. Phosphorus and Potassium Fertilizers do not apply nitrogenous fertilizers; Drainage should be used to make the soil dry properly. When watering is required, it should be poured with small water and not flooded. Sclerotinia disease strains appear in cabbage fields and should be removed as soon as possible, and brought out of the field to burn or buried. Grasp the spraying early in the early stage of the disease, spraying the plant's root and neck, old leaves and the ground. Can be used 50% procymidone WP 2000 times, or 40% sclerotin net wettable powder 800 times, or 50% iprodione wettable powder 1000 to 1500 times spray, every 7 to 10 days Continuous control 2 to 3 times.
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