Common diseases of Angelica sinensis and their control methods

Angelica sinensis is an important traditional Chinese medicine, its efficacy is powerful, its economic value is relatively high, and it attracts many people to plant. However, in addition to the planting environment and other matters needing attention, it is disease that affects its planting quality and yield. The following pro-agricultural network brings you common diseases and control methods of Angelica sinensis. Let's take a look.

1. Root rot

Root rot disease, as the name implies, mainly harms the root system of planting, the root system of the plant is brown when the disease occurs, and gradually decays into black water immersion with the aggravation of the disease, and finally the plant leaves gradually wither and yellow, which leads to the death of the plant.

Control methods: select the cultivation land with good soil drainage and good air permeability, the cultivation land should be ploughed once every two years, avoid continuous cropping, disinfect the soil and seeds before planting, disinfect the soil and seeds in time, remove the diseased plants in time, and then destroy them. Disinfect the area around the diseased plant to prevent the spread of the virus.

2. Powdery mildew

At the beginning of the onset of powdery mildew, the leaves began to appear gray and powdery disease spots, with the passage of time, the leaves gradually appeared small black particles, and finally the leaves were covered with powdery mildew, and the plants slowly withered.

Control methods: disinfect the seeds and soil before planting, remove the diseased plants and burn them in time after discovering the disease, avoid continuous cropping, and it is best to rotate the disease. at the initial stage of the disease, the disease can be controlled by continuous spraying with 500 times solution of Dysen zinc.

3. Sclerotinia disease

At the initial stage of the onset of Sclerotinia sclerotiorum, the leaves began to turn yellow and the roots began to rot slowly, which was similar to that of root rot, but its root system looked normal on the outside, but it had rotted into a hollow inside, and there were many small black granular sclerotia in the cavity.

Prevention and control methods: disinfect seeds and soil before planting, family lime or plant ash can be found in the planting hole, and the diseased plants can be treated in the same way as before. at the initial stage of the disease, continuous spraying of 500 times solution of Dysen zinc can be used to control the disease.

4. Rust

Rust is mainly dangerous temperature and warm damage leaves, when the disease occurs, the leaves appear rust color irregular disease spots, and there are rust color powder, rust is extremely harmful, its spore vitality is extremely strong, it can survive in the environment, can be repeatedly infected many times, the spread speed is extremely fast, and the injured area is positive and wide.

Control method: burn the diseased leaves of the residual plants after harvest, so as to reduce the source of bacteria, and spray 2000 times of 25% wettable powder at the initial stage of the disease.

The above is the introduction of all the common diseases and control methods of Angelica sinensis. Angelica sinensis is more harmful and the more common are the above. Good disease control measures of Angelica sinensis is the key point to maximize the yield of Angelica sinensis. More relevant agricultural knowledge is on the pro-agricultural network.