Understand Orchid Medicine (VI. Jinggangmycin)

With the coming of the rainy season in the south of the Yangtze River, the rainy, humid and rising temperature is the most suitable for the reproduction and spread of all kinds of true bacteria. At this time, the Orchid Garden should take measures such as drug prevention, reasonable water control, paying attention to ventilation, shading and so on. Restrict the spread and spread of harmful bacteria.

Among the bacteria infecting the stem base and root of bluegrass, white silk disease is a kind of pathogen with rapid progress. The disease began to occur at the stem of the orchid near the ground, which was characterized by waterlogged, yellowish brown to reddish brown wet rot, which was covered with white silk mycelium, mostly radially spread, and often spread to the soil near the diseased part. In the middle and later stage of the disease, sclerotia the size of yellow and white rapeseed often appeared in the white mycelium, and then became yellowish brown or brown, which became the source of re-infection. The suitable temperature for the development of the pathogen was 32 to 33 ℃, the highest temperature was 38 ℃ and the lowest temperature was 13 ℃.

After a painful lesson, people found a more effective drug in the process of prevention and control of orchid white silk disease, which is Jinggangmycin. Jinggangmycin has been industrially produced in China since 1976. Jinggangmycin is the largest variety of antibiotics in China. At present, there is no substitute for Jinggangmycin, and there has been no drug resistance over the past few decades. There are only two countries in the world that produce Jinggangmycin, one is China, the other is Japan.

Jinggangmycin is an antibiotic produced by actinomycetes. The pure product is white powder, which is soluble in water. It has the therapeutic effect of internal suction, is stable in neutral, weak acid and weak alkali medium at room temperature, and is easy to decompose in strong alkali and strong acid medium. Water agent appearance is brown transparent liquid, odorless, valid for 2 years; water-soluble powder, appearance is brown or brown loose powder, weak acidity, valid for more than 2 years, Lanyou mostly like to use powder products. It is low toxic to people and animals, and safe to fish and bees. The residual period can be up to 15-20 days and can be mixed with many kinds of fungicides.

Jinggangmycin is mainly used to control rice sheath blight and false smut. Vegetables are mostly used for vegetable seedling blight and white silk disease, while the application of bluegrass is one of the necessary drugs for the prevention and control of white silk disease. at present, most of them are 3% or 5% water-soluble powder on the market, and are available at general pesticide stations.

If the white silk disease is found early and does not need to rise seedlings, the prepared Jinggangmycin 500-700 times liquid can be sprayed directly on the root base of the whole pot diseased plant, and it can be cured basically by using it for two or three times. Diseased bluegrass should be isolated and observed, preferably in a ventilated semi-shady astigmatism. In addition, the height of the plant material should be reduced, the plant material covered in the Reed head should be removed, and the part of the Reed head should be temporarily exposed to the air. First, it is easy to observe, and second, it can make the Reed head in a relatively dry environment, which is conducive to rapid recovery. After the cure of white silk disease, do not relax the management, it is best to sprinkle a thin layer of plant ash around the diseased Reed head for solid prevention.

After the occurrence of white silk disease in bluegrass, adjacent bluegrass can be protected by spraying Jinggangmycin, while others can be prevented by spraying plant ash. The treatment of white silk disease should be based on the principle of early prevention and early treatment, and the time of the first treatment must not be delayed, otherwise the consequences will be extremely difficult to control. The cured bluegrass should be slightly dry and refreshed, not drenched in the head, in short, it needs to be nursed slowly after a serious illness.

Jinggangmycin storage should pay attention to prevent high temperature, sun, mildew and miscellaneous bacteria pollution, especially when the one-time use should not be finished, we should pay attention to keep the storage container sealed. (Gao Hoi Chung)