Characteristics and control measures of cabbage swollen disease

What are the characteristics of cabbage swollen disease: the emergence of normal, but after ten days, the cabbage seedlings are wilting during the day, slowly not long, and severely begin to die. The roots are tumors in which the main root is swollen and spherical, the tumors are in a string, the large diameter is 1.5 cm, white, and the epidermis is rough.

1. Indoor microscopic examination of cabbage root disease

The disease sample was examined indoors and examined under a microscope. The root cell has a small, nearly elliptical body, which is a sporangia of the pathogen, which is integrated by a single round pathogen.

2, cabbage disease diagnosis

There are two kinds of diseases in production that can cause nodules of cabbage, one is root knot nematode disease, and the other is clubroot disease. No root-knot nematode was found in the microscopic examination. The pathogen detected was a sclerotium sclerotium, which belongs to the genus Myxobacteria. This bacterium can cause clubroot disease in cabbage, so it has been diagnosed that these diseases have caused clubroot disease.

3, the disease law of cabbage root disease

Chinese cabbage root disease is an infrequent disease, but it has an upward trend in recent years. The disease is a stubborn soil-borne disease, and the bacteria can survive in the soil for 10 to 15 years. The pathogen infects cruciferous vegetables such as cabbage, rapeseed and rapeseed. The long-distance transmission is carried out by the adhesion of germs to the seeds. The field is spread by rain, irrigation water, pests and farming operations.

4, cabbage root disease prevention and treatment technology

1. Seed treatment: Seed sterilization treatment is the most important prevention and treatment method. It can be diluted 200-300 times with the beneficial source planting bacteria solution.

2. Replanting rotation: 4 to 5 years of rotation with non-cruciferous crops, which can be used to replant strawberries or melons and vegetables.

3. Soil treatment: 3-5 kg ​​of bactericidal liquid is planted per acre with Yifu source, sprayed on the surface of the surface before being planted 500 times, and then sown after rotary tillage.

4. Prevention of diseased seedlings: In the small seedling stage, the roots of the plant are mixed with 500-1000 times of liquid, and one plant needs 0.4 liters of liquid medicine, and then refilled once every 7 days.

Shaanxi Kang New Pharmaceutical co., Ltd. , https://www.apipepdites.com