Disease and Pest Control of Dendrobium roseum

Diseases

Black spot

It seems that many kinds of flowers cannot escape this disease. From the name of the disease, you will find that black spots will first grow on the leaves, first a small piece, and then gradually spread to the entire leaf. If not handled properly and the disease becomes more serious, it will form a large piece on the leaf and finally wither and fall off. This disease often occurs from March to May, so you must be vigilant during this period.

Once the disease is discovered, the first thing to do is to pull out the infected leaves. Do not throw them directly into the soil or outside. Instead, burn the leaves to prevent the bacteria from invading other leaves or other plants. Then you need to plant a certain dose of organic matter and spray it regularly. Basically, 1 or 2 times can achieve the control effect.

Soil pollution

This disease is relatively easy to identify. The symptoms are basically a layer of black powdery substance on the surface of the leaves, which will definitely affect photosynthesis. If not treated in time, it will inevitably cause poor development.

The prevention and treatment methods are similar to the previous one, but the required medicines are different, so everyone still needs to treat different diseases according to the specific symptoms.

Pests

Philippine shield scale mainly appears on the edges of leaves or the backs of leaves and is not easy to find, but in severe cases it can cause the death of the entire plant. They often hatch in late May, so timely prevention is necessary during this period.

A certain amount of dimethoate can be used for treatment. At the same time, branches and leaves that are seriously infested with insects must be removed in time, otherwise the remaining insects will continue to cause harm, and previous prevention and control work will become futile.