How to prevent and control common beet diseases and pests? Detailed explanation of control methods

Beet is one of the common ingredients on our dining tables. It can be prepared in many ways, either cooked or pickled. In addition, its sugar content is comparable to that of sugarcane, and it is also one of the main raw materials for sugar production, making it an important cash crop. However, during cultivation it is easily troubled by diseases and pests, which often lead to reduced yield and lower quality, affecting economic returns. Below, Qinong Network brings you control methods for common beet diseases and pests. Let's take a look.

1. Beet root rot

Root rot is mainly caused by bacterial infection. Spore fungi overwinter safely in the soil, and in the following year spread and infect through soil and rainwater. When the disease is severe, it causes the root system to rot and die, leading to reduced yield or total crop failure, with great harm.

Control methods: Before overwintering, clean up weeds and debris, then deep plow the soil and use the sun for disinfection. Carry out another disinfection treatment before planting. After the disease occurs, spray with Junxianwei pesticide, and use other control pesticides to drench the roots.

2. Beet brown spot disease

Beet brown spot disease develops from pathogenic fungi. This pathogen grows rapidly in high-temperature and high-humidity environments, and causes damage during the rainy summer season. When the disease occurs, the pathogen infects the leaves, brown lesions appear on the leaves, and they gradually spread, causing the leaves to wither and die, resulting in total loss of yield.

Control methods: It is mainly caused by pathogens carried in the soil, so disinfecting the soil can prevent this disease. Use Diqueling for spray disinfection. After spraying, cover with plastic film or straw, and ventilate and sow after 2-3 days.

3. Beet damping-off disease

Damping-off mainly harms beets at the seedling or bud stage. Often the young buds rot before emerging, or when two or three true leaves have grown, brown lesions appear on the leaves and stems of the seedlings; afterward the cotyledons and hypocotyls become discolored and black, and eventually the plants wither and die.

Control methods: It mainly occurs in environments with low temperature and high humidity, poor soil permeability, and poor drainage, so these conditions need attention during planting. Before planting, treat the seeds with pesticide seed dressing to eliminate pathogens carried by the seeds, increase the application of phosphate fertilizer to enhance seedling disease resistance, and use pesticides for control when the disease occurs.

4. Cutworm

Cutworms harm beets as larvae. Their larvae suck the sap of leaves and stems. After feeding, yellow-white lesions appear on the damaged parts, ultimately causing the leaves to wither and fall off, leaving bare stems, and resulting in reduced yield or total crop failure.

Control methods: Carry out autumn plowing or winter plowing in time to reduce overwintering pupae. In March-April, clean up weeds in time to reduce eggs, or use manual egg collection and catching methods for control. Chemical control can also be used: during the peak period of cutworms, spray with Bacillus thuringiensis or Qingchongjun powder mixed with water.

5. Green bagworm

Green bagworms, like cutworms, harm stems and leaves, except that they directly chew the leaves, causing notches in the leaves. In severe cases, they eat all the leaves, also leaving bare stems.

Control methods: Before planting, carry out deep plowing to eliminate overwintering eggs or larvae, or catch them manually. Cyhalothrin emulsifiable concentrate mixed with water can also be sprayed for control.

The above are the control methods for common beet diseases and pests brought to you by Qinong Network. We hope they are helpful to you. For more agricultural knowledge, please stay tuned to Qinong Network.