Control of common diseases and insect pests of Dendrobium candidum

Dendrobium candidum is a kind of herb, which is often used in medicine. However, because most of them are born in the humid environment of the mountains, some diseases and pests are more likely to breed, so what are the common diseases and insect pests? Below the pro-agricultural network to introduce the incidence of these diseases and prevention and control methods.

1. Black spot

Dendrobium candidum often occurs above the leaves, which can be easily distinguished. The manifestation of the early disease is that brown spots will appear on the leaves, and then slowly become dark brown, and the distribution will slowly spread to other leaves, resulting in large-scale death of the leaves. The time of onset is mostly concentrated in April, and attention should be paid to inspection at this time. After discovery, 1000-fold solution of Duoling can be used to prevent and cure the disease. The plants with serious disease had better choose to give up so as not to infect more Dendrobium candidum.

2. Coal pollution disease

The time of onset is also concentrated around April, and it is more difficult to pay attention to it in the early stage, because it is like dust on the leaves at the initial stage. It is easy to identify when it slowly becomes serious in the later stage, and it will be slowly covered with a layer of soot-like substance, which is also difficult to remove. The whole plant of Dendrobium candidum will grow slowly or even stop developing eventually. After discovery, it is recommended to use 1500 times of dimethoate emulsion for prevention and treatment, and it is best to take all the residues away after harvest so as not to leave pathogens.

3. Soft rot

Most of them occur in the rainy season, because the roots are invaded by moisture in the hot and humid environment, so the drainage work in the rainy season must be done well. At the initial stage of the disease, the plant stops developing, and some leaves will slowly wither, the root color will become darker, and colored water stains will flow out, and finally the plant will fall to the ground due to root rot. Once found, it is best to burn the necrotic plant, and then immediately disinfect it with agricultural streptomycin, and release a small amount of the surrounding plants.

4. Dendrobium candidum

This is a parasite similar to aphids, which usually only grows on Dendrobium candidum, and the onset time is mostly concentrated in late May. When the disease occurs, it is easy to find that the main realization is the deformation of the leaves, and those without deformation will find that the leaves are withered. It is best to remove the pathogen manually first, and then use 1000 times of 40% dimethoate EC to prevent and cure it. Early disinfection of insect pests can effectively prevent the incidence of diseases.

The above is about the prevention and control of common diseases and insect pests of Dendrobium candidum. Of course, there are some other diseases that we will present to you in the later stage. If you have a need for this, please remember to follow our website.