What are the common diseases of Angelica sinensis? A detailed explanation of the latest control methods

Angelica sinensis is an important traditional Chinese medicine. Its medicinal effects are powerful, and relatively speaking its economic value is also rather high, attracting many people to grow it. However, apart from the growing environment and other considerations, what affects its planting quality and yield is disease. Below, Qinnong Web brings you the common diseases of Angelica sinensis and their control methods. Let's take a look together.

1. Root rot

Root rot, as the name suggests, mainly harms the root system of the planted crop. When the disease occurs, the plant's root system turns brown. As the condition worsens, the root system gradually rots and becomes black and water-soaked, and finally the plant's leaves gradually wither and yellow, ultimately causing the plant to die.

Control methods: Choose a cultivation site with good soil drainage and good aeration. The cultivation site should preferably be plowed once every two years. Avoid continuous cropping. Disinfect the soil and seeds before planting. Handle disease promptly when found, promptly pull out diseased plants, then destroy them, and disinfect the area around the diseased plants to prevent the virus from spreading.

2. Powdery mildew

At the initial stage of powdery mildew, grayish-white powdery disease spots begin to appear on the leaves. As time goes on, small black particles gradually appear on the leaves, and eventually the leaves are covered with white powder, and the plant slowly withers and dies.

Control methods: Disinfect the seeds and soil before planting. After disease is found, promptly pull out diseased plants and burn them. Avoid continuous cropping, and crop rotation is best. In the early stage of the disease, continuous spraying with a 500-fold dilution of zineb can be used for control.

3. Sclerotinia rot

At the initial stage of sclerotinia rot, the leaves begin to turn yellow, and the root system begins to slowly rot and become hollow. This point is similar to root rot, but the outside of its root system looks normal, while the inside has already rotted and become hollow, and the hollow cavity contains multiple small black granular sclerotia.

Control methods: Disinfect the seeds and soil before planting. Lime or plant ash can be applied in the planting holes. When diseased plants are found, use the same handling method as above. In the early stage of the disease, continuous spraying with a 500-fold dilution of zineb can be used for control.

4. Rust disease

Rust disease mainly harms leaves in warm conditions. When the disease occurs, rust-colored irregular disease spots appear on the leaves, along with rust-colored powder. Rust disease is extremely harmful. Its spores have very strong vitality and can survive in the environment. They can repeatedly infect the crop, spread extremely quickly, and affect an extremely wide area.

Control methods: After harvesting Angelica sinensis, gather the remaining plant residues and diseased leaves and burn them centrally. This can reduce the source of overwintering pathogens. In the early stage of the disease, spray with a 2 000-fold dilution of 25% triadimefon wettable powder.

The above is the full introduction to the common diseases of Angelica sinensis and their control methods. The ones with greater harm and relatively common occurrence in Angelica sinensis are the several types above. Doing a good job in Angelica sinensis disease control measures is the key point for maximizing Angelica sinensis yield. For more related agricultural knowledge, visit Qinnong Web.