Why are peanut leaves turning yellow? Find the cause and solve it easily

Yellowing peanut leaves are a common phenomenon in peanut cultivation, and it is also a headache for farmers, especially the yellowing caused by irrigation after rainfall, which reduces peanut yields. So what causes yellowing peanut leaves? How should it be solved? Let's find out together.

1. Zinc deficiency

When peanuts are deficient in zinc, the leaves turn yellow and white, and the leaves are relatively small. The most obvious feature is that the peanut leaves grow in clusters and the plants become shorter. Zinc deficiency in peanuts generally appears during the growing period and is relatively rare during the pod-filling stage, but this possibility cannot be ruled out.

2. Nitrogen deficiency

When peanuts are deficient in nitrogen, the leaves begin to lose green and turn yellow from the older leaves, and the leaves become smaller and thinner. The plants will be relatively shorter. After summer-sown peanuts enter autumn, peanuts enter the critical pod-filling stage. If there is too much rain, it will cause the loss of trace elements in the soil, leading to leaf yellowing, especially in sandy soil where it is even more obvious.

3. Iron deficiency

When peanuts are deficient in iron, yellow leaves also appear, but only the upper leaves turn yellow, while the lower leaves remain normal. In cases of severe iron deficiency, the leaf veins also turn yellow. There is no obvious change in leaf size, only the color changes. So when yellow leaves appear on peanuts, you can carefully observe the symptoms of the yellow leaves to determine whether it is caused by iron deficiency. After identifying the cause, iron can be supplemented to help them recover.

4. Solutions

The yellow leaves caused by the above three nutrient deficiencies are relatively common. In addition, during the growth of peanuts, they are often caused by multiple elements at the same time, so special attention should be paid to prevention and control. It is recommended that before peanut leaves turn yellow, use a sprayer with about 10 grams of 0.1% urea, 20 grams of ferrous sulfate, and 10 grams of chelated zinc or zinc sulfate. After one spraying, the yellowing of peanut leaves can be effectively controlled. If one application is not enough, it can be sprayed several more times depending on the growth of the peanuts, or a commonly used foliar fertilizer can be sprayed. In general, when spraying three times, this is very important.

The above is an introduction to the causes of yellowing peanut leaves and solutions. We hope it can help you. To learn more related knowledge, please follow us.