How can eggplant prevent root rot?

Tomato root rot is a soil-borne disease. Some farmers reported that the root rot of their own eggplant was serious, which affected the normal growth. This paper will introduce the symptoms, occurrence regularity and control measures of tomato root rot in detail.

First, the symptoms of eggplant root rot

The occurrence of eggplant root rot usually begins after eggplant planting. When infected, symptoms are relatively mild. Observe the leaves, they will wither during the day and recover by themselves at night. After a period of time, with the aggravation of the disease, the leaves will turn yellow and dry, and then observe the roots and stem bases, and there will be waterlogging spots, which are brown at first, then dark brown, and worsen with the disease.

Based on this, the leaves on the ground began to turn yellow and fall off. In the early stage of the disease, although the roots will have symptoms, the symptoms of the aboveground parts are not obvious or even difficult to find. With the aggravation of root rot, plants will wither slowly and eventually die directly.

Second, the occurrence law of tomato root rot

Tomato root rot is a soil-borne disease, and its pathogen can survive in the soil for a long time, usually 5- 10 years, which can be said to be a stubborn soil-borne disease.

Root rot fungi will overwinter in soil and diseased residues in soil as hyphae or sclerotia, and begin to do harm when the temperature is suitable. It was observed that the root rot pathogen could be damaged between 10-35 degrees, and the optimum temperature was about 24 degrees.

Therefore, the bacteria overwinter in the soil or in the sick and disabled, and slowly began to do harm until the next spring. If there is a problem with the growth of the planted eggplant, its own resistance will be weakened, and the probability and severity of root rot will be relatively increased. In addition, when the humidity in the field increases, it will also be beneficial to the occurrence of root rot.

Third, the spread of tomato root rot

There are many ways to spread tomato root rot, and there are probably three common ways:

First, rain spread, or spread through water flow during irrigation and watering.

Secondly, when applying farmyard manure, it carries germs and spreads them through farmyard manure.

Third, spread through human activities and agricultural tools. Farmers working in eggplant fields will pass through active communication.

Fourth, the preventive measures of tomato root rot

Should focus on the prevention of soil-borne diseases such as root rot, the main preventive measures are as follows:

1, crop rotation

Proper rotation and stubble planting can play a good role in preventing root rot, such as rotation with Cruciferae and Liliaceae crops, or rotation with some field crops for 3-5 years, and then planting eggplant, the occurrence of root rot will be well controlled.

2, soil disinfection

If the root rot of the plot is serious and rotation is not desired, the soil should be disinfected in advance when planting eggplant.

3. Rational fertilization

In addition to the nitrogen fertilizer necessary for eggplant growth, we should also pay attention to the use of phosphorus fertilizer and potassium fertilizer. At the same time, combined with decomposed farm manure, comprehensive and reasonable fertilization in many aspects can also prevent some root rot diseases.

4, remove the sick and disabled

After harvesting eggplant, before planting eggplant in the next year, the sick and disabled bodies in the field should be cleaned up in time, especially the plots with root rot. When eggplant is harvested, it is necessary to clean up the sick and disabled bodies falling from the field in time, reduce the wintering places and reduce the number of germs in the field.

5, reduce the wound

When agricultural activities are carried out in the field, attention should be paid not to damage the roots and plants, so as to reduce the infection of root rot and play a preventive role.