Control methods of diseases and insect pests of Radix Glehniae

Radix Glehniae is a traditional Chinese medicine in China, which has a long history of application. It has the effects of nourishing yin and clearing lung, benefiting stomach and fluid, resolving phlegm and tonifying qi, and is distributed all over the country. At present, there has been a large area of cultivation, when planting diseases and insect pests will harm its yield, so how to control sand ginseng diseases and insect pests? Let's take a look.

1. Root nematode disease

Generally occurring in early May, nematodes invade from the root system and absorb the branches and leaves of the root system, and its excrement will stimulate the root system to produce nodules, resulting in a decrease in root absorptivity, resulting in yellowing and even death of the seedlings.

Control methods: reasonable rotation, avoid continuous cropping or previous crops are leguminous crops, when fertilizing the soil, sprinkle 22-3 kg of nematode granules or carbofuran granules per mu and mix them evenly with the soil, which can kill the latent nematodes in the soil and reduce the incidence of the disease.

2. Leaf shrinking disease

This is a viral disease, which is mainly caused and spread by red spiders. the leaves will shrink and twist after the plant is infected, resulting in slow plant growth and dwarf deformity in the later stage, resulting in extremely low yield of sand ginseng, seriously endangering the economic benefits of drug farmers.

Prevention and control methods: when planting, choose the planting without disease, in the occurrence of red spiders, use Shijiejing suspension spray, spray Zhiyanling emulsion or virus A wettable powder before the disease, can play an excellent role in prevention.

3. Rust

Also known as yellow pox disease, usually occurs in July, when the disease will appear on the stems and leaves, the disease spot will gradually spread, to the later stage of the disease spot surface rupture, the emergence of rust-colored spore powder, resulting in early plant death.

Prevention and treatment methods: the disease should be prevented and treated in time when the disease breaks out, and sodium rust can be sprayed every 7-10 days for 3-4 times in a row.

4. Drillworms

The rate of reproduction of the heart-drilling worm is relatively fast, and 4-5 generations can occur every year. Its pupae will survive the winter on the soil surface, break out of the cocoon and begin to lay eggs after the temperature rises in spring. In the period of serious damage from May to October, the larvae will drill into the stems, leaves, roots and flowers of Radix Glehniae, resulting in hollow roots and flowers without seed.

Control methods: during the egg stage or when the larvae have just hatched, spray trichlorfon or dimethoate to control them. If the larvae have been drilled into the plant, they can be poisoned with trichlorfon solution and trapped by electric lights from July to August.

The above is the introduction of pest control methods of sand ginseng, hope to help you, want to know more related knowledge, please pay attention to us.