What are the methods of orchid fertilization, the fatal orchid erosion disease

For orchids, erosion is very serious and spreads rapidly. There are two kinds of orchid erosion disease: soft rot and black rot.

At the beginning of the onset of soft rot, small brown water stains appear on the leaves, and then expand into black moist patches, which are easy to rupture and discharge foul-smelling liquid. After that, the orchid plant will soon erode. The disease usually occurs in the rainy and humid season above 30 ℃.

Black rot is a fungal disease, which mostly occurs in leaves; in the basic part and growing point, translucent freckles initially emerge in the diseased area, freckles gradually expand, tissues blacken and gradually erode. When it begins to emerge on the root system or underground stem, it should be paid attention to. If it is not controlled, it will soon spread from the root system to all the underground stem, until the plant will be completely destroyed. In a very short time, the disease can make the orchid rhizome turn black and the leaves blacken and erode.

Prevention and cure method

After the orchid is infected with erosive disease, it is necessary to turn the basin and change the soil in time, cut off and destroy all the tissues in the diseased part, then wash and disinfect the cut with clean water, smear sulfur powder, put it monotonously in a cool and ventilated place, and return to the basin after the incision shrinks. After putting on the basin, do not water or spray for 3 to 4 days. Use 50% thiram plus 500 times water to make a solution and spray it once. The planting environment should be ventilated and illuminated. After being rescued, the diseased plants should be temporarily isolated from other orchids to avoid infection. After its growth is normal and not contagious, it can be put together with the rest of the orchids.