Analysis on the incidence and infection principle of Orchid Stem Rot

Analysis on the incidence and infection principle of Orchid Stem Rot

Analysis on the incidence and infection principle of Orchid Stem Rot

Orchid stem rot, also known as orchid Fusarium wilt, its initial disease is generally caused by long-term high temperature, high heat and high humidity, only a small amount is introduced through orchid communication. The outbreak period of orchid stem rot is consistent with the rapid growth period of orchids, that is to say, the faster the orchid grows, the faster the orchid stem rot will break out. this is related to the optimum temperature for orchid growth and the best temperature for orchid stem rot outbreak (the best temperature for orchid growth is 28 degrees Celsius, and the best temperature for orchid stem rot outbreak is 28 degrees Celsius). Now there are many orchid friends, in order to make orchids grow a little more and grow faster, they have conditionally built modern greenhouses, and many ordinary orchid friends have also built simple family greenhouses, keeping the temperature above 25 degrees Celsius all the year round. As a result, orchid stem rot breaks out fastest and spreads most widely in greenhouses. It is said that in many places, many orchids who used to grow orchids in greenhouses have switched to natural cultivation for fear of orchid stem rot. Orchid stem rot and orchid soft rot, called by orchid friends as the incurable disease of orchid, is the enemy of orchid cultivation. Many orchids have been harmed by stem rot of orchids. So how does orchid stem rot come on? Orchid stem rot will occur as long as the temperature and humidity are suitable, but sometimes it occurs in a large area, sometimes alone, sometimes in the east, sometimes in the west, sometimes in the whole basin, sometimes in a single seedling, sometimes in spring and summer, sometimes in autumn and winter (but rarely in winter), and most of the disease begins with big grass, strong grass and new grass, and a few start with old grass and small grass. Although there are many drugs and methods for prevention and treatment, it is still overwhelming and helpless, which makes people feel headache and helplessness at the same time. But orchids have found that when stem rot occurs, half (a clump) of bluegrass sometimes in the same pot dies, while the other half (clump) is safe, but it may occur again in the second half of the year, the second year, or even N years later. And sometimes even new pots, new plant materials raised new bluegrass, will also be sick, this can not help but feel confused: is stem rot an infectious disease? How did it get infected? Is it bluegrass itself? Is it a plant? Is it water? Is it the air or the people themselves? If it is contagious, how come the same pot of bluegrass is not contagious? If it is not contagious, how can several pots or dozens of pots of grass get sick at the same time? It's unthinkable. However, recently reported an example of rabies, gave me inspiration, orchid stem rot and rabies incidence is not a little similar? It is concluded that orchid stem rot and rabies are severe infectious diseases with irregular incubation periods, ranging from days to months or even years. However, rabies attacks people and animals, while stem rot attacks plants such as orchids. Rabies is terrible, and orchid stem rot is also terrible. We should prevent orchid stem rot like rabies. This is my new understanding and understanding of the incidence and contagion principle of orchid stem rot. With this understanding, I will not feel strange and panic about the incidence of orchid stem rot in the future, and will try every means to prevent and control orchid stem rot.

Although the stem rot of orchids is serious, after several years of experiments, I found that it is not an incurable disease! If it is cured quickly, half of it can be saved, at least it will not be cut off. When only one or two leaves turn yellow, the grass will be easier to treat. When the whole bluegrass leaves turn yellow, it will be very difficult to save.

Methods to prevent stem rot of orchids: orchids, orchid pots and plants must be disinfected before pots, plants should be relatively thick, orchids should be planted shallowly as far as possible, the environment must be ventilated, pots should not be too wet for a long time, and organic fertilizers should be used as much as possible. less or no use of inorganic fertilizers and chemical fertilizers, etc., can ensure that orchids do not send or less stem rot. I don't know how you will feel after reading it.