Common diseases of Dendrobium officinale and their prevention and treatment methods

Common diseases of Dendrobium officinale: black spot disease

Symptoms of black spot disease of Dendrobium safflower

When the disease occurs, dark brown spots appear on young leaves, with yellow surrounding the spots, which gradually spread to the leaves. In severe cases, the black spots connect to each other on the leaves, and finally wither and fall off. This disease often occurs in early summer.

Prevention and control methods of black spot disease of Dendrobium officinale

If the symptoms are severe, the diseased leaves can be manually cut off.

Chemical control: Use 1:1:150 Bordeaux mixture or 1000 times solution of Dolin to prevent and control its development.

Common diseases of Dendrobium officinale: Anthracnose

Symptoms of Anthracnose in Dendrobium officinale

It harms leaves, stems and branches, and brown or black spots appear on the affected leaves. It occurs from January to May.

Prevention and control methods of anthracnose of Dendrobium officinale

Spray 1000 times diluted 50% carbendazim or 1000 times diluted 50% thiophanate-methyl for 2-3 times.

Common diseases of Dendrobium officinale: Sooty mold

Symptoms of Dendrobium officinale sooty disease

When the disease occurs, the entire surface of the plant's leaves is covered with a layer of soot-black powder, which seriously affects the photosynthesis of the leaves and causes plant stunting. March to May is the main outbreak period of this disease.

Prevention and control methods of Dendrobium officinale sooty disease

Spray 1000 times diluted 50% carbendazim or 1500 times diluted 40% dimethoate emulsion 1-2 times for prevention and control.

The domesticated Dendrobium requires a good ventilation environment and good drainage performance of the pot soil. Always pay attention to maintaining the air humidity, otherwise it is easy for the Dendrobium to develop these nasty diseases.