Control methods of common diseases of Asarum

Asarum is a valuable medicinal material. With the expansion of its demand and the development of economy under the forest, its artificial cultivation is developing rapidly, and its planting area is getting larger and larger. It is one of the main economic industries in many rural areas. Although Asarum is a medicinal material, it will still be harmed by diseases when it is planted. When the disease is serious, it will cause a devastating blow to it and affect the development of Asarum production. The following Xiaobian brings several common disease prevention and control methods of Asarum, let's understand it.

1. Asarum blight

The blight mainly harms the leaves and petioles of Asarum. When the disease occurs, the leaves appear water-immersed dark green round disease spots. When the humidity is high, a large number of white mildew appears in the disease spots. In the environment of high temperature and humidity, the disease will spread at a very rapid speed. Finally, the petiole softens and collapses, and the leaves rot and die.

Prevention and control methods: reasonable crop rotation, strengthen ventilation and drainage measures during planting, remove diseased leaves in time after diseased leaves, and spray 600 times of Dysenamine solution or 75% chlorothalonil 600 times solution if local infection occurs.

2. Asarum rust

Rust is also harmful to leaves and petioles, some also harm flowers and fruits, it is a bacterial disease, spores parasitic on the leaves, the initial leaf surface has a mound uplift, to the later spores rupture, there are a large number of white powder, with the development of the disease, become yellowish brown and chestnut brown, the color resistance is a bit like rust, in serious illness, the leaves will die completely.

Prevention and control methods: in autumn, the garden should be cleared thoroughly, and the diseased and residual plants should be pulled out of the field and burned, so that the pathogen can be reduced. The diseased leaves can be removed when the disease occurs, and it can also be sprayed with fenrusting Ning, sodium rust and other agents for prevention and control.

3. Asarum blight

Rhizoctonia solani mainly harms the base of the stem, the pathogen invades the young stem, with the continuous expansion of the stem, the base of the stem is infected with yellow-brown disease spots, and finally leads to the rot of the base of the stem, and the plant gradually withered and withered due to the partition of transport tissue.

Prevention and control methods: reasonable rotation, after autumn harvest, turn the diseased and residual plants deep into the soil, timely open ditches and drain in the rainy season, reduce field humidity, and at the same time prevent high temperature and strong light, so as not to cause sunburn to cause wounds and cause germs to take advantage of the opportunity. When you get sick, you can spray 2000 times of carbendazim or 1000 times of Likuling emulsion to irrigate the soil.

4. Asarum leaf blight

Leaf blight mainly harms leaves, petioles and flowers and fruits, leaf infection appears round disease spot, disease spot has obvious concentric wheel pattern, light brown or brown, when the condition is serious, the disease spot converges and perforates, resulting in leaf death. When the petiole is infected, there is a fusiform black spot, the spot is sunken, and the spot of flower and fruit is round, dark brown, which will produce brown mildew in the environment of high temperature and humidity.

Prevention and treatment methods: clear the garden in autumn, remove the diseased plants and burn them in time, and then spray disinfection with mancozeb or copper sulfate.

The above are the common disease control methods of Asarum, hope to help you, want to know more about the planting of medicinal materials, please pay attention to us.