What are the common prevention and treatment methods for medicinal herbs?

Answer 1

The following are the methods to prevent and cure some common diseases of medicinal herbs:
1. ** Root rot **:
- Choose a suitable plot of land for planting and avoid high temperature, high humidity, and low-lying plots of water.
- Rotation.
- Turn over and dry the soil before sowing.
- In the early stage of the disease, 5% lime water can be used to irrigate the roots, or 1% iron sulfuric acid can be used to disinfect the infected cave; pesticide can also be used to control underground pests before sowing, and at the same time, decomposed organic fertilizer can be applied to enhance the disease resistance. In the early stage of the disease, 800 - 1000 times solution of thiophanate and carbendazim can be used to irrigate the roots, and drainage should be carried out in time after the rain.
2. Leaf Spot Disease:
- Rotation.
- Seeds and seedlings were disinfected with 50% carbendazim or 65% zineb 600 - 1000 times solution.
- In the early stage of the disease, the leaves were sprayed with 1:1:100 Bordeaux mixture, once every 7 - 10 days, and continuously sprayed 2 - 3 times.
3. ** Damping-off Disease **:
- Rotation.
- The planting density had to be reasonable.
- In the early stage of the disease, it can be sprayed with 1000 times of Tuzet wetting powder, or the above pesticide mixed with fine soil and sprinkled at the base of the stem once every 10 days. It can also reduce the soil humidity, pull out the infected plants in time, treat the soil with carbendazim, pentachloronizene, etc., and spray other plants for prevention.
4. ** Rust **:
- During the rainy season, ditches should be dug in time to prevent water from accumulating in the soil.
- In the early stage of the disease, spray 97% Rust-resistant Na 400 times solution or 0.3 Baume sulfur mixture.
- Remove the infected leaves and burn them together.
5. ** Smut (Smut):
- Rotation.
- The seeds were soaked in 20% triadimefon or 50% carbendazim for disinfection.
- They uprooted the infected plants in time and burned them.

In addition, in terms of field management, Chinese medicinal herbs should be planted in plots with good drainage that were suitable for growth and avoid planting them in sticky plots. This could reduce the spread of germs caused by accumulated water, prevent the occurrence of dead seedlings, rot, and root rot, and be conducive to strong seedlings and roots. In terms of fertility management, attention should be paid to fertility management. The use of microorganisms in time could improve soil characteristics, enhance soil breathability, increase beneficial bacteria to devour harmful bacteria, and be conducive to root growth. During the growth process, the immunity of traditional Chinese medicine herbs could be improved by spraying roots on the leaves, raising roots and protecting leaves, preventing diseases and improving root vitality, preventing premature aging, so as to achieve the effect of swelling roots and good quality.
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