The main symptom of tomato bacterial ulcer disease is that the leaves of the plant are curled and shrunken, and the blue-brown is dry and hung on the stem without falling off. Sick stems, curved abruptly or adventitious roots, diseased stems when the disease is cracked, the marrow turned brown and hollow. The round of fruit lesions produced small round spots, slightly raised, milky white, and the middle part of the fruit was brownish, showing a "bird's-eye shape". When the disease is heavy, many lesions are contiguous, making the surface of the fruit very rough.

Control points:

1, strengthen quarantine, strict blockade of the epidemic area, and fully fight ulcer disease.

2, the seeds must be disinfected, can be soaked in warm water 52 °C for 30 minutes, or 200 ml of streptomycin sulfate soaked for 2 hours, or 3% microliter soak white for 5 minutes, after immersion are required to rinse with water.

3, soil-free seedlings. Severe disease field and non-sweet potato vegetables for three years of rotation.

4, clear the field weeds.

5, agricultural operations should be carried out after dew dry leaves.

6, remove the disease plant deeply buried.

7, pharmaceutical control. Can be used for spraying Guancuiqing, streptomycin for agricultural use, Shilokoshi, hymexazol or carbendazim and other agents for irrigation.

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