Cabbage Soft Rot Disease 10/11/2021

Ph.D Nguyen Minh Tuyen

Cabbage is one of the vegetables that are loved by the market and consumed all year round, in large quantities. Therefore, growing cabbage often gives high economic income. However, pests and diseases are one of the factors that increase costs and hinder production. One of the dangerous diseases, which has caused significant losses to cabbage production, is soft rot disease.

* Symptoms and effects:

The disease usually arises when the cabbage was rolled, the plant has fully bloomed on the ground. The disease usually appears on the plant close to the base or the old leaves close to the damp soil, then spreads inward and upward. The lesions are usually watery, dark brown in color and have a very foul odor. Once infiltrated, they cause the stem to rot and slide out of the cabbage easily. When the garden has high humidity, the disease can also attack directly on the outer leaves of the cabbage, then spread inward, causing the whole cabbage to rot. After harvesting, during transportation or storage, the disease continues to spread to other cabbages, reducing the commercial value.

 

* Pathogens and conditions of development:

Cabbage soft rot is caused by Erwinia sp. In conditions of high density planting, excessive nitrogen fertilization, plants are too green, dense leaves, combined with gardens often watering in the style of rain spray, gardens are too low humidity ... the disease is often severe. The disease also often occurs when the weather is rainy, hot and humid, and the garden has a high density of pests.

* Highly effective preventive measures:

The principle is to apply a combination of many possible measures.

 - Plant vegetables with appropriate density to ensure ventilation, less rubbing together.

 - Raise the bed high enough to help the garden open and dry.

 - Limit watering in the form of rain spray with great pressure, so irrigation should be in the trench.

 - Preventing pests to limit causing mechanical wounds and penetrating diseases.

 - Prune the old leaves to allow the root to be ventilated.

 - When taking care, limit  rubbing  vegetable crops.

 - Use CALCIUM NITRATE to help increase disease resistance.

 - Fertilize with adequate balance, not excess nitrogen, avoid dense and soft plants.

 - Use fertilizer TANO-601 to provide necessary micronutrients to increase resistance.

 - In the period of heavy rain and wind, it is necessary to check to detect diseases for timely prevention, or proactively spray to prevent diseases, which will help reduce damage and reduce prevention costs.

 - When detecting early disease in the vegetable garden, it should be prevented with one of the less toxic biological products such as SAIPAN 2SL, or ALPINE 80WG.

 

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