The Latest Control Methods for Common Pests and Diseases of Dendrobium officinale

Dendrobium officinale is a herbaceous plant mostly used for medicinal purposes. However, because it mostly grows in relatively shady and damp mountain environments, some diseases and pests are more likely to breed. So what are the common pests and diseases? Below, Qinnong Network introduces the onset conditions and control methods of these diseases.

1. Black spot disease

It mostly occurs on the leaves of Dendrobium officinale and is very easy to identify. In the early stage, the symptoms appear as brown spots on the leaves, which then slowly turn dark brown, and the distribution range gradually spreads to other leaves, eventually causing large-scale death of the leaves. The onset time is mostly concentrated in April. At this time, pay attention to inspections. After discovery, 1000-times diluted Duoling solution can be used for control. For severely affected plants, it is best to discard them to avoid infecting more Dendrobium officinale.

2. Sooty mold

The onset time is also mostly concentrated around April. In the early stage, it is relatively difficult to notice because at first it looks like dust on the leaves. When it gradually becomes more serious later, it is easy to identify, as a layer of material like coal ash slowly covers the surface and is very difficult to remove. The entire Dendrobium officinale plant will eventually grow slowly or even stop developing. After discovery, it is recommended to use 1500-times diluted 40% dimethoate emulsion for control. After harvest, it is best to take away all residues to avoid leaving behind pathogens.

3. Soft rot

It mostly occurs during the rainy season. The reason is that in a hot and humid environment, moisture invades the roots and causes the disease, so drainage work during the rainy season must generally be done well. In the early stage of the disease, the plant stops developing, and some leaves slowly wither, the root color darkens, and colored water stains flow out. Finally, root rot causes the plant to fall over. Once discovered, it is best to burn the necrotic diseased plants, then immediately disinfect with agricultural streptomycin, and a small amount can be released on surrounding plants.

4. Dendrobium officinale scale insect

This is a parasitic insect similar to aphids. It generally only grows on Dendrobium officinale, and the onset time is mostly concentrated in late May. When it occurs, it is easy to find. The main symptoms are deformed leaves, and leaves that are not deformed will appear withered and dry. In such cases, it is best to first remove them manually to eliminate the source of the disease, and finally use 1000-times diluted 40% dimethoate emulsifiable concentrate for control. Doing a good job of disinfecting pest damage early can effectively prevent the incidence rate.

The above is some content about the control of common pests and diseases of Dendrobium officinale. Of course, there are some other diseases that we will present to everyone one after another later. Those who need information in this area, remember to follow our website.