How to prevent and control diseases and pests of Scutellaria baicalensis? Latest technical method tutorial
Scutellaria baicalensis is one of the commonly used traditional Chinese medicines, with extremely high medicinal value. As its market demand increases, its planting scale is also gradually expanding. However, with changes in the ecological environment, its diseases and pests are becoming more and more serious, severely affecting the yield and quality of Scutellaria baicalensis, and have become the main factor hindering its production. Let us take a look below at the prevention and control techniques for diseases and pests of Scutellaria baicalensis.
1. Leaf blight
It generally occurs in early June. When the disease occurs, irregular brown lesions appear at night or along the leaf margins, gradually extending inward until they spread into patches, causing the leaves to gradually dry up and die. In severe cases, it can cause leaves to fall off and the plant to wither and die. This disease is more severe under high temperature and rainy conditions. If not controlled in time, the pathogen will spread across the entire field in a short period, causing great harm.
Prevention and control techniques: Choose plots with higher terrain and good drainage for planting. Plow the soil before planting to reduce overwintering sources of the disease. When the disease occurs, promptly pull out diseased plants, take them out of the field, and burn them. Spraying Bordeaux mixture or carbendazim solution comprehensively for control gives relatively good results.
2. Root rot
When root rot occurs, dark brown lesions appear on the rhizome, gradually spreading to the main root. Over time, the root system gradually declines, and the plant lodges and dies. This disease occurs easily during the rainy season, and a humid environment will worsen the condition.
Prevention and control methods: During the rainy season, strengthen drainage measures to avoid water accumulation in the soil, and improve ventilation and light transmission. Disinfect the soil before sowing. When the disease occurs, ferrous sulfate solution can be used to irrigate the holes for control.
3. Powdery mildew
Powdery mildew mainly harms leaves. When the disease occurs, white powdery lesions appear on the leaves, as if covered with a layer of white powder. The lesions gradually spread to the entire leaf, and finally small black particles appear on the lesions.
Prevention and control methods: Strengthen field management and pay attention to ventilation and light transmission. When the disease occurs, carbendazim and thiophanate-methyl solutions can be used for control, and powder rust fungicide can also be sprayed, with relatively good results.
4. Pests
The main pests of Scutellaria baicalensis include cutworms, moths, and others. They harm the root system and the young and tender parts of the plant, severely affecting the normal growth and development of the plant.
Prevention and control methods: Physical control and chemical control can be used comprehensively. Manual capture can be used to eliminate cutworms, and black light lamps can be used to trap and kill moths. Pesticides such as dimethoate and dichlorvos can also be sprayed for control, but attention should be paid to the concentration of the agents to avoid pesticide residues.
The above is an introduction to the prevention and control techniques for diseases and pests of Scutellaria baicalensis. We hope it can help you. If you want to learn more related knowledge, please follow us.