What's the difference between Radix Scutellariae and Radix Astragali? Common Diseases and insect pests of Scutellaria baicalensis and Control techniques of Plant Diseases and insect pests

Scutellaria baicalensis Georgi is one of the traditional Chinese medicines commonly used by doctors, and its medicinal value is very high. with the increase of its market demand, its planting scale is gradually expanding. However, with the change of the ecological environment, its diseases and insect pests become more and more serious, seriously affecting the yield and quality of Scutellaria baicalensis, in order to become the main factor hindering the production of Scutellaria baicalensis. Let's take a look at the prevention and control techniques of Scutellaria baicalensis.

Radix Scutellariae and Radix Astragali are common traditional Chinese medicines. Scutellaria baicalensis is the root of Scutellaria baicalensis perennial herb in Labiatae, and Radix Astragali is a plant of Leguminosae. Although there is only an one-word difference between Radix Scutellariae and Radix Astragali, their efficacy, indications and characters are completely opposite.

Morphological difference between Radix Scutellariae and Radix Astragali

1. Scutellaria baicalensis: Scutellaria baicalensis is a perennial herb of the genus Scutellaria in Labiatae, with fleshy roots, strong papery leaves, lanceolate to linear-lanceolate, terminal racemes on stems and branches, Corolla purple, purple to blue, filaments flattened, style slender, disk annular, ovary brown, nutlets ovoid, flowering from July to September.

2. Astragalus membranaceus: Astragalus membranaceus is a perennial herb of the genus Astragalus in Leguminosae, pinnately compound leaves, 13-27 leaflets, 5-10 cm long, petiole 0.5-1 cm long, raceme slightly dense, 10-20 flowers, total pedicel nearly equal or longer than leaves, significantly elongated to fruiting stage, pods thinly membranous, slightly swollen, semi-oval, 20-30 mm long, 8-12 mm wide, tip prickly, seeds 3-8. The flowering period is from June to August and the fruiting period is from July to September.

Difference of efficacy between Radix Scutellariae and Radix Astragali

1. Scutellaria baicalensis: Scutellaria baicalensis Georgi has bitter taste, cold nature, heart, lung, gallbladder and large intestine meridian, which has the effect of clearing heat and dryness, purging fire and detoxification, stopping blood and calming fetus, mainly treating febrile disease, upper respiratory tract infection, lung-heat cough, damp-heat yellow gallbladder, pneumonia, dysentery, hemoptysis, red eye, restless fetal movement, hypertension, carbuncle and furunculosis.

2. Astragalus membranaceus: Astragalus taste sweet, warm in nature, return to the lung meridian, it is beneficial to strengthen the surface, tonify qi and increase yang, support toxin to produce muscle, promote diuresis and detumescence, and mainly treat qi deficiency and weakness, lack of food and loose stool, middle qi depression, long diarrhea and prolapse of anus, self-juice night sweats, blood deficiency and yellowing, Yin gangrene and swelling, qi deficiency and edema, internal heat and eliminating thirst, etc.

1. Leaf blight

Generally at the beginning of June, irregular brown disease spots appear at night or at the leaf edge, gradually extending inward, until spreading into blocks, causing the leaves to gradually dry up to death, and in serious cases, it will lead to leaf shedding and plant death. The disease is more serious in high temperature and heavy rain. If it is not prevented in time, the pathogen will spread to the whole field in a short time, causing great harm.

Control technology: select the land with high terrain and good drainage to plant, plough the soil before planting, reduce the source of overwintering disease, pull out the diseased plant and burn it in the field in time, and spray Bordeaux solution or carbendazim solution to prevent and cure it.

2. Root rot

During the onset of root rot, dark brown spots appeared in the root stem, which gradually spread to the main root, with a long time, the root system gradually produced, and the plant lodged and died. The disease is easy to occur in the rainy season, and the wet environment will aggravate the disease.

Prevention and control methods: in the rainy season, drainage measures should be strengthened to avoid stagnant water in the soil, strengthen ventilation and light transmittance, disinfect the soil before sowing, and use ferrous sulfate solution to prevent and cure the disease.

3. Powdery mildew

Powdery mildew mainly harms the leaves, when the disease occurs, the leaves appear white powdery disease spots, like covering a layer of white powder, the disease spots will gradually spread to the whole leaf, and finally the disease spots will produce small black particles.

Prevention and treatment methods: strengthen field management, pay attention to ventilation and light transmittance, carbendazim and methyl topiramate can be used to prevent and cure the disease, and the effect is better.

4. Insect pests

The main pests of Scutellaria baicalensis Georgi are ground tigers and moths, which can harm the root system and young parts of the plant, and seriously affect the normal growth and development of the plant.

Prevention and control methods: physical control and chemical control can be used comprehensively, artificial capture can be used to eliminate ground tigers, and black light can be used to trap and kill moths. You can also spray dimethoate, dichlorvos and other pesticides for control, but you need to pay attention to the concentration of the agents, so as not to cause drug residues.

The above is the introduction of Scutellaria baicalensis pest control technology, hope to help you, want to know more related knowledge, please pay attention to us.