The yellow leaves of plants are mostly due to deficiency. The yellow leaves are locked in iron and magnesium at the top of the young leaves.

The question about yellow leaves has been answered many times by science and agriculture. The situation of iron deficiency has also been explained many times, and for friends who often read articles on promoting agriculture through science, this question is simply a sub-question. How to solve the problem when you see yellow leaves? Look at the new and old leaves, and look at the veins. If it does not meet the above, think about other situations.

(iron deficiency in soybeans)

From the photos, the performance of soybeans is obviously a manifestation of iron deficiency, which is commonly known as element deficiency. Spraying some ferrous sulfate can quickly relieve the symptoms.

Look at the photo, the yellow leaves are at the top of the young leaves, lock the two elements of iron and magnesium, and then look at the green veins, indicating iron deficiency! Is it a very simple answer? I hope that similar yellow leaf problems can be solved smoothly. Here are some pictures of iron deficiency in different plants so that you can have a better understanding of iron deficiency.

(apples are short of iron)

Below, I would like to explain the role of iron in the plant. I hope you will have a deeper understanding from the theoretical aspect. Ferrous ion is one of the components of chlorophyll, which needs its participation in many photosynthetic enzymatic reactions, and ferrous ion is also involved in the enzymatic reaction in mitochondria, so for iron-deficient plants, firstly, the lack of chlorophyll synthesis results in yellow leaves, and then the decrease of photosynthesis and respiration leads to the slow extension of plants.

(iron deficiency in pear trees)

Generally speaking, iron-deficient yellow leaves are more likely to appear in alkaline soils, such as sandy land. Iron should be replenished in such fields every year. Note that iron supplementation is not soil fertilization. The fertilizer utilization rate is too low. It is best to use foliar spraying to improve the utilization efficiency of iron.

(peach trees are iron deficient)

Secondly, due to the strong inertia of iron, it is not easy to transfer after being fixed in the plant, so it is first shown in the young leaves for the plant with iron deficiency. Therefore, for iron-deficient plots, we often find the phenomenon of heart leaf albinism. This is also a feature of iron deficiency in plants that we found in time.

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