Thoughts on the symptoms of element deficiency and wiredrawing in plants

We raise orchids, most of which are made of coarse materials, which are already low in nutrients, coupled with frequent leaching, the lack of elements is inevitable. When I first started to raise orchids, I was very worried about the crude materials. At that time, I considered that there would be a lack of trace elements. Let's first look at the symptoms of trace element deficiency: magnesium deficiency: leaf veins green, while leaf veins turn yellow, sometimes purple, with necrotic spots. Iron deficiency: chlorosis between veins, showing a clear reticulate pattern, sometimes showing a mosaic shape, and in severe cases, the whole leaf is white. Boron deficiency: deformity and shrinkage of young leaves. The veins between the leaves turned green irregularly. Zinc deficiency: leaves are small and clustered, spots appear on both sides of the leaf surface, plants are short and internodes are shortened. Mild people are similar to iron deficiency. Copper deficiency: leaf chlorosis, leaf tip white curl paper twist, leaf necrosis spots, and then withered and died. Manganese deficiency: necrotic spots appeared between veins and dark green stripes appeared in leaf veins. The above items are similar to the wiredrawing I saw in the disease diagnosis.

Let's talk about the virus again. We often see thicket dwarf disease of wheat, rough dwarf disease of corn, mosaic disease, albino disease and so on. They are all viral diseases, but they are sporadic. There has never been a large area of disease, although it is insect transmission and soil transmission, but the probability of transmission is very low. The incidence rate is also very low, which is almost ignored in agriculture. But why do our orchids have so many viral diseases? Do we all regard lack of element as wiredrawing? The answer is yes. I think a lot of wiredrawing in the diagnosis of the disease is deficiency.