functions of iron in plants
It is necessary for enzyme activity and chlorophyll synthesis in plants. It is essential for the newly growing young parts of the plants. There is almost always iron in the soil, but it can be in a form that plants cannot take. Iron disappears with washing and they cling to the lower layers of the soil.
In environments with high calcium in the soil, soil pH is high. In high pH environments (alkaline environments) iron turns into a form that plants cannot take. In other words, plants cannot utilize iron when the pH is between 7.2 and 8.3. When the soil is alkaline, perhaps the iron mineral is abundant but cannot be taken by plants.
iron deficiency in plants
Iron deficiency is very common in plants. Initially the symptoms are a loss of green color in very young leaves. While the tissues between the veins are pale green, yellow or even white, the veins themselves are dark green. The new leaves emerge completely without color, but the streaks then turn dark green. Iron deficiency is very easy to recognize. Even the thinnest veins remain green and the color between the veins turns completely yellow. In severe deficiencies, it may turn yellow in the veins. Chlorosis caused by iron deficiency can be seen in different severities as follows.