A probe into the secrets of two rotten orchids

Author: watching chess

Two rot, that is, soft rot and stem rot, soft rot is from the new seedling rot, stem rot is from the old seedling rot. In my opinion, there is no essential difference between soft rot and stem rot, the difference is that the grass with stem rot is hopeless, and sometimes the grass with soft rot is not destroyed by the whole army, but this is only the appearance.

The occurrence of stem rot is no more than several reasons: first, the grass itself carries bacteria, the disease is inevitable; second, when the ramet, the wound is not handled well, the bacteria invade the old seedling Reed head; third, the new bud infection, the treatment does not infect the old seedling in time.

Healthy grass, as long as it is properly handled when ramet, can completely put an end to stem rot caused by reasons other than budding infection (the details of ramets will be discussed later), that is to say, except for diseased grass and new bud infection, stem rot can be completely eliminated, and most stem rot is caused by soft rot. The focus of anticorrosion should be on the prevention of soft rot.

The causes of soft rot are very complicated. after observation over the past few years, I think there are mainly the following reasons:

First: insect pests, mainly snails, snails will eat new buds, bite a hole in the new buds, the hole is sometimes very deep, when deep to the new bud fleshy Reed head, if not found in time, rotten buds are inevitable.

Second: the new bud takes root before opening, and the root top breaks the leaf beetle. At this time, the leaf beetle is also fleshy and tender. If there are unclean fat and water pickling, fungal hyphae and other causes of infection, it is also easy to cause rotten buds.

Third: when the new bud grows to five or six leaves, the strong bud will have the second generation bud growth, sometimes the second generation bud will break the leaf beetle but the leaf beetle does not rot, sometimes the leaf beetle will rot, the leaf beetle of strong grass is very thick, in the process of decay, cell death will produce a lot of "rot liquid", this liquid soaks the new bud for a long time, which is very easy to cause new bud erosion. The bud and the mother seedling are "heart to heart". If the bud is rotten, it can not be found, so it is easy to infect the mother seedling. This is also the main reason why strong grass is perishable. Watering will increase the speed of the disease, so many orchid friends think that pouring water to the heart of the leaf is the main cause of soft rot, but it is not.

Fourth: when ramet, sometimes break the mother seedling, if there are relatively full bud points on the mother seedling, it is easy to crush the bud point when breaking hard, but you are not aware of it at all, and the bud point will rot after you put it on the pot, which is also a kind of soft rot. in this case, the old seedling was first infected by rotten buds and was mistaken for stem rot.

Fifth: when ramet, bruise the new seedling, or break the old seedling, sometimes undetected, but this kind of internal injury leads to soft rot and stem rot is inevitable.

Six: some plants grow a spherical bacteria in the process of decomposition, which is easy to infect new buds around the Reed head.

Only when we know why it can be targeted can we take precautions.

Pest prevention is simple. Found that snails, turn the basin in time, orchid Reed head, root with high-pressure water repeatedly rinse, dry, plant material cooking, on the basin with pre-steamed plant material, can basically be eliminated. Fertilization should also be paid attention to, if mixed with organic fertilizer, fertilization had better be irrigated along the basin wall, try to avoid fertilizer and water pouring around the Reed head, where the fertilizer and water has been irrigated with green algae.