The Latest Control Methods for Common Pests and Diseases of Sugar Beet

Sugar beet is one of the common ingredients on our dining tables, and it can be prepared in many ways, whether 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, it is susceptible to pests and diseases during cultivation, which often leads to reduced yield and quality and affects economic returns. Below, Qinnong Web brings you the control methods for common pests and diseases of sugar beet. Let's take a look.

1. Sugar 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, and the harm is extremely great.

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 agent, and use other control agents to drench the roots.

2. Sugar beet brown spot disease

Sugar beet brown spot disease develops from pathogenic bacteria. 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, ventilate after 2-3 days, and then sow.

3. Sugar beet damping-off

Damping-off mainly harms sugar beet at the seedling or sprouting stage. The young sprouts often rot before emerging, or when two or three true leaves have grown, brown lesions appear on the stems and leaves of the seedlings. After that, the cotyledons and hypocotyls discolor and turn black, and finally 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 a chemical seed dressing to eliminate pathogens carried by the seeds, apply more phosphorus fertilizer to increase the disease resistance of the seedlings, and use chemical agents for control when the disease occurs.

4. Cutworm

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

Control methods: Carry out autumn plowing or winter plowing in time to reduce overwintering pupae. In March and April, clean up weeds in time to reduce eggs, or use manual egg collection and capture methods for control. Chemical methods can also be used. During the peak period of cutworms, spray with Bacillus thuringiensis or Qingchongjun seedling 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 capture them manually. Cyhalothrin emulsifiable concentrate mixed with water can also be sprayed for control.

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