The Latest Control Methods for Common Diseases and Pests of Goldenrod

Goldenrod is a widely used Chinese herbal medicine. It is rich in flavonoid compounds and has excellent anti-cancer properties, as well as effects of clearing heat and detoxifying, reducing inflammation and swelling, and can treat various inflammations such as bronchitis, tonsillitis and pharyngitis. As wild resources are increasingly dwindling, artificial cultivation has become a trend, but during cultivation, diseases and pests are important factors affecting its growth. So what diseases and pests does goldenrod have? And how should they be controlled? Let's take a look.

1. Root rot

This is a disease that harms the root system. It easily occurs in hot, humid and muggy weather. When the disease occurs, water-soaked spots appear on the root system, gradually turning brown and then black, until they rot, and the above-ground stems and leaves will also slowly wither and die, causing great harm.

Control method: Choose plots with good ventilation and good drainage for planting, which can reduce the chance of this disease occurring. When the disease occurs, pull out the diseased plants and spread lime powder on the diseased holes for disinfection, or use carbendazim or thiophanate-methyl to drench the roots for control.

2. Mosaic disease

This is a viral disease. It can be spread by pests such as aphids. It mainly harms the leaves or flowers of the plant. When the plant is affected, the leaves shrink and twist, becoming mosaic-like, and the plant will gradually wither.

Control method: To control this disease, first eliminate aphids to prevent them from spreading the disease. When planting, choose virus-free seeds, or carry out comprehensive disinfection treatment before planting. Applying imidacloprid during the seedling stage or peak growth period can effectively prevent this disease.

3. Rust disease

This is a fungal disease. When it occurs, rust-colored spots grow on the leaves and gradually spread. In the later stage, yellow powdery substances may appear on the diseased spots. These are the pathogen's pycnidia, which spread with the help of wind.

Control method: Strengthen fertilizer and water management, apply more phosphorus and potassium fertilizer to improve disease resistance. Before transplanting and after the greening stage, spray triadimefon to prevent this disease.

4. Pests

The pests of goldenrod include underground pests such as white grubs, cutworms and mole crickets, which gnaw on the plant's roots or seedlings. If seedlings suffer pest damage, they are very likely to die. If the roots of mature plants are seriously damaged, the plants will also wither and die.

Control method: Manual capture can be used, or agents such as trichlorfon and dichlorvos can be sprayed for control.

The above is an introduction to the control methods for common diseases and pests of goldenrod. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.