Symptoms and Control methods of soft Rot of Chinese Cabbage

Chinese cabbage soft rot is a destructive disease in the production process of Chinese cabbage. Once it occurs, it may cause a poor harvest, do great harm, and often cause huge losses to farmers. So what are the symptoms of soft rot of cabbage? How to prevent and cure it? Let's have a look with the editor.

1. Symptoms

The initial disease site is the petiole and root tip in contact with the ground, the petiole disease site is water-stained, the outer leaves will lose water and wither, and finally the whole plant will die. When the disease occurs in the later stage of growth, there are water-like disease spots at first, the leaves are translucent and oil-paper-like, and finally the whole plant will soften and rot and give off a stench. When the pests such as yellow striped beetle and sugarcane black cricket are serious, a large number of bacteria invade from the wound, resulting in aggravation of the disease, and sometimes softening and decay occurs during transportation.

2. The regularity of the disease

It is caused by Owen pathogens. In 20 degrees and high humidity environment, colonies should be formed with host plant rhizosphere soil as the center for long-term survival. When the rain is due to the spatter cost of Rain Water, it will first invade from the lower leaves of cabbage, the wounds on the petiole and the food eaten by pests. In windy weather, it will also blow the bacterial dust like a vegetable field, and some plants will start to get sick from the top. Pathogens are often sown with running water on the surface, and parasitic plants will multiply rapidly, and even after disinfection of the soil, the density of bacteria will immediately return to the original.

3. Prevention and control methods

First of all, it is necessary to select varieties suitable for the local climate environment, and it is best to formally determine and buy seeds; in choosing planting sites, we should avoid the previous crop plots of Cruciferae, and properly sun up the fields and disinfect them before sowing. The sowing time should also be determined according to the variety and local climate. Generally, the planting time of early-maturing varieties is from July to August, and that of mid-late-maturing varieties is from August to September. The seeds sown had better be sterilized. In the early days, ah, pay attention to the prevention and control of diseases and insect pests to avoid mechanical losses in cabbage, resulting in opportunities for germs to invade. In the early stage of soft rot, it is necessary to prevent and cure the disease in time, and agricultural streptomycin can be sprayed every other week to ten days, 2 to 3 times in a row.

The above is the introduction of the symptoms and control methods of Chinese cabbage soft rot, hope to help you, want to know more related knowledge, please pay attention to us.