In the process of rose growth, there will be more or less problems caused by fertilization. Here, I will tell you what the different performance of rose plants will be in the absence of different fertilizers, so as to facilitate the flower friends to "take the right medicine" for maintenance.
The performance of nitrogen deficiency starts from the old leaves. Specifically, uniform green deficiency, abnormal slow growth of plants, yellow leaves, leaves will fall off seriously. The symptoms of chlorosis began to appear from the old leaves, and then spread to the new leaves.
Phosphorus deficiency began from the old leaves. Specifically, abnormal dark green appears, sometimes accompanied by gray spots or purple spots. The color of the old leaves becomes blue and purple, the edge of the leaves is purple red, and the tip of the leaves will die.
Potassium deficiency starts from the old leaves. The dicotyledons are mottled green deficient parts, and then necrotic areas appear along the leaf margin and tip, and curl slowly until they are scorched and blackened. In monocotyledons, the cells at the top and edge of the leaves necrosis first, and then develop to the bottom.
Calcium deficiency starts from new leaves. Specifically, the tip and edge of young leaves necrosis first, then the buds necrosis, then the root tip will stop growing and discoloration, and finally die. The plant grew abnormally short and had dark crinkled leaves. There are spots along the edge of the leaves.
Magnesium deficiency starts from the old leaves. Specifically, there are patches between veins. Sometimes it will be red, orange and other bright colors, serious will have a small area of necrosis.
The performance of sulfur deficiency is similar to that of nitrogen deficiency. The leaves will be uniformly green deficient and yellow, and grow abnormally slowly. However, sulfur deficiency usually starts from seedlings.
Iron deficiency starts from young leaves. Specifically, there is an obvious lack of green between veins, which will be burned seriously.
The results of zinc deficiency showed that the growth of internode was very slow, and the leaves showed severe abnormal shape. There are strip spots on the leaves, and the lack of green in the old leaves is also the general manifestation of zinc deficiency.
The results of boron deficiency showed that the leaves became thicker and darker, and the meristem at the top of branches and roots finally died.
The specific manifestation of manganese deficiency is that leaves lack of green, young leaves and old leaves will have small necrotic spots. But it should be distinguished from brown spot and bacterial spot.
The expression of copper deficiency began from young leaves. Specifically, the necrosis of the leaf tip and the withering and blackening of the leaves.
At first, Mo deficiency appeared as green deficiency and necrosis between the old veins, some of which were spot like and slowly necrotic.
The specific manifestation of chlorine deficiency is that the leaves wilt first, then appear green deficiency and necrosis until they turn bronze.
Although the article is long, it is full of scientific knowledge. This time, no matter which element is missing, you will know which fertilizer to use, right? Bit by bit accumulation, "brick house" can also become an expert!
