Peanut yellowing, according to the general situation, it is not a specific disease, yellowing disease generally refers to the yellowing of peanut leaves, this situation is very common in the actual planting process of peanuts, according to statistics, Most of the cases are caused by deficiency. Therefore, the main content of this article is the yellowing of peanuts caused by deficiency. As for other factors, there is time to say later.
Peanut due to lack of yellowing, only 3 points, iron deficiency, nitrogen deficiency, zinc deficiency, the following details.
1, iron deficiency
Iron deficiency is a factor that is mentioned by many people. When the iron is deficient in iron, the first step is that the leaves in the upper part of the plant turn yellow, but the lower part will still maintain a certain green color. The whole plant may turn yellow, the color will turn yellow and white, and look dull.
2, lack of nitrogen
Nitrogen also accounts for a large proportion of peanut growth. If nitrogen is absent, it will not only affect the normal growth of peanut plants (small plants), but also yellow leaves, but unlike iron deficiency, in general, it first The lower part turns yellow and slowly reaches the upper part. The serious consequence is that the whole plant is yellow.
3, zinc deficiency
When the peanut is deficient in zinc, it will also show the yellowing of the leaves. However, zinc deficiency also has a distinct feature. Its leaves are clustered, and the growth of the whole peanut is relatively short. The leaves are carefully observed, which is smaller than normal.
The above three kinds of deficiency lead to peanut yellowing is a relatively common situation, of course, other defects may also lead to yellowing of the leaves, but the odds are small, here is not to say more, mainly the above 3 points, then this situation What fertilizer should farmers add?
In the case of iron deficiency, ferrous sulfate can be sprayed;
In the case of zinc deficiency, zinc sulphate may be sprayed;
In the case of nitrogen deficiency, urea can be sprayed or applied.
Of course, some people will say, what should I do if I can't judge which element is missing? It is not difficult to apply urea (may also add some phosphate fertilizer, potash fertilizer), and then buy some medium and trace elements of foliar fertilizer (the market has peanut special foliar fertilizer), spray, basically solve the problem.
We all know that peanuts have "three times of medicine". After the three times of medicines are put on, the situation of peanut yellowing will not appear, and even if it appears, it will be effectively treated.
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(Source: Good Agricultural Resources Network)
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