Pest and disease control of valerian

Major diseases

This kind of grass is likely to encounter very few diseases because it is mainly wild and has not been cultivated by humans for a very long time, so there are not many types of diseases. Once the disease is discovered, it is most likely mosaic disease. This disease is quite common, and mostly occurs on their topcoats. At the beginning, spots will gradually appear on the leaves, and the color of the spots will gradually turn brown. If this disease is serious, it can easily affect the entire herbal yield.

Disease control

Before planting, it is best to choose disease-resistant varieties. If the disease has already occurred, special pesticides should be used for regular spraying. The earlier this disease is discovered, the better. Farmers can observe it more often or check its growth regularly. It is best to prevent it properly.

Main pests

This herb is not prone to insect pests, but it still cannot escape the evil aphids. The small insects will chew the juice of the stems and leaves, and may even chew the front of the leaves, reducing the plant's ability to survive. There are many types of aphids, and you need to observe more to determine which specific type it is.

Pest Control

If the infestation is not very serious and we have some free time, we can remove the aphids manually. However, if the spread area is relatively large, it is necessary to remove the leaves that have been eaten severely and spray them with special pesticides, choosing the appropriate dosage according to the condition of the herbs. If you have time, you can also add laundry detergent to water to make a solution, or directly buy DDT emulsion and dilute it to a specific dose for use.

Well, now you don’t have to worry about encountering diseases and pests during the planting process, you can rest assured.