What medicine is used for stem rot of orchids?

First, wash the whole pot of orchids, cut off the diseased plants, repair the decaying parts, soak them in sterilization for an hour, dry them in a cool place, and paste metalaxyl manganese and zinc onto the stems of orchids and dry them. The false bulbs of orchids are wrapped in sterilized aquatic plants and replanted in new flowerpots and soil.

Stem rot of orchid

The etiology of stem rot

Orchid stem rot, also known as Fusarium wilt and Fusarium wilt, can be called orchid stem rot as long as it causes orchid pseudobulb rot. The peak of the disease is from May to September every year. Today, the editor is mainly talking about stem rot caused by fungi, but no matter what kind of cause, most of them have the inducement of high temperature, high humidity and lack of ventilation.

Symptoms of stem rot

The main symptom is that the leaves of orchids start yellowing from the base and wither and die within a day or two. The leaf will be broken as soon as you touch it with your hand, and the disease is rapid and serious.

At the same time, the surface of its root system is still intact, but the interior has been infected and turned brown, even rotten, so the emergence of stem rot has a great impact on the orchid.

Control of stem rot of orchids

For orchid stem rot, the most important thing is prevention, followed by remedial treatment.

Prevention of stem rot

Summer and autumn is a disease-prone period, the climate environment is high-temperature and rainy, high humidity, orchids are very easy to infect bacteria. Therefore, more windows should be opened for ventilation to ensure air fluidity. The basin soil should not be too wet and use more organic fertilizer.

In addition, it should also be sterilized frequently. Since May, special fungicides such as carbendazim and carbendazim can be used to spray the whole orchid and its surrounding environment every week. Mainly for the surrounding sterilization, the leaf surface can be appropriately less.

Treatment of stem rot

For orchids that have been infected with stem rot, the whole pot of orchids should first be taken out and washed. Then cut off all the diseased plants and repair the decayed parts with a blade.

Soak the orchids in a sterilizer for at least an hour. Then dry it in a cool place.

Then adjust the metalaxyl manganese and zinc into paste, rub it on the stem of the orchid and dry it.

Finally, the false bulbs of orchids can be wrapped in sterilized aquatic plants and replanted in new flowerpots and soil.

Note: do not water immediately after replanting, and do not bask in the sun, leave it alone in a ventilated place. After three days, streptomycin can be watered thoroughly with clean water. After that, the whole plant was soaked with sterilizer every month.

Fighting the stem rot of orchids is a long way to go. Flower friends, we still need to make more efforts.