Control methods of burdock diseases and insect pests

Burdock is a biennial or triennial herb of Compositae family. It is not only a vegetable, but also a medicinal material with high edible and medicinal value. At present, many areas of our country began to plant it, after years of development, its planting area of wild ginger is relatively considerable, but it will suffer from diseases and insect pests during planting, affecting the yield and quality of burdock. So how do you control burdock pests? Let's take a look.

1. Black spot disease

Black spot mainly damages the leaves and stems of burdock. When the disease occurs, there are many small spots on the leaves, and many spots will merge together to cause the leaves to wither. When the humidity is larger, the disease spot is rusty brown, and the black mold layer will grow on the disease spot. Oval spots appeared on the stem when infected, and with the development of the disease, the spots became sunken, black and moldy, and finally led to the lodging of the whole plant.

Control methods: the disease plant to remove the disease leaves in time, harvest in the removal of sick and disabled body, concentrated burning will be deeply buried, in the disease can be sprayed chlorothalonil, captan and other chemicals control.

2. Powdery mildew

The main damage to burdock leaves, the affected leaves will appear uneven distribution of white powder spots, late powder spots will be fused together, the surface of the leaves covered with a large number of placement, until the leaves withered yellow. In warm and humid environment, this disease is more serious, and in addition, soil fertility is insufficient or partial application of nitrogen fertilizer can also induce this disease.

Control methods: strengthen field management, increase base fertilizer, pay attention to reasonable combination of nitrogen, phosphorus and potassium, avoid partial application of nitrogen fertilizer, increase plant disease resistance. In the rainy season after timely drainage, reduce humidity, can also be triazolone, Wuyimycin pesticide spraying control.

3, angular spot disease

It mainly damages the leaves of plants. When the disease occurs, the leaves appear water-stained spots, which are light brown in the initial stage and polygonal in shape. It is best to cause the leaves to perforate and die. Also can be stem disease, stem disease early is also water damage shape, along the stem longitudinal expansion, early serious cause ulcer or crack, brown dry.

Prevention and control methods: early onset can be used when copper succinate fertilizer, copper redoxin, Hu·ethyl phosphorus aluminum and other chemicals spray control, the effect is better.

4. Insect pests

The pests of burdock include insects, aphids and grubs, which are harmful to larvae or adults, sucking plant juice or nibbling stems, leaves and tubers, affecting the quality and yield of burdock.

Control methods: available phoxim ec or dimethoate ec mixed bran, in the evening scattered in the field trap, can also be directly sprayed phoxim ec, dimethoate ec, trichlorfon and other pesticides spray, but pay attention to the use of pesticides in turn, so as not to produce drug resistance.

The above is the burdock pest control methods, I hope to help you, want to know more about the relevant knowledge, please pay attention to us.