How to prevent and treat black rot of Dendrobium

Symptoms of Dendrobium black rot:

Small wet brown spots appear on the edges of the middle section of the infected leaves of Dendrobium, and then the black spots quickly expand and connect into flakes, and then the leaves turn yellow and fall off. If the diseased leaves are not cut off in time and the medicine is not applied for treatment, the bacteria will spread to infect the leaf sheaths, stems and roots, and even the entire cluster will become withered and rotten. The disease starts with black rot at the roots, which gradually spreads upward to the stems and leaves, causing the leaves to turn yellow and fall off.

Dendrobium black rot prevention and control technology:

Remove and burn the diseased plants, strictly sterilize and disinfect them to block the transmission route.

Pay attention to reducing humidity and ensuring normal ventilation.

Use 600 times solution of 75% Benomyl , or 500 times solution of 65% Mancozeb , or 600 times solution of 25% Metalaxyl , spray continuously 2-3 times, with an interval of about 1 week. If the condition worsens, you can increase the concentration of the medicine.

The symptoms and prevention methods of black rot are all presented to you. I believe that everyone has already known about the black rot of Dendrobium orchid. I believe that everyone will be able to deal with this situation in the future. The editor also offers you the solution to the yellowing of Dendrobium orchid leaves. If you are interested, let's take a look ~