How to treat yellow leaves at the bottom of peanuts? What to do with peanut yellow leaves

Planting density, if the planting density of peanuts is too large, the leaves at the bottom will not have enough light, which is also one of the reasons for the yellowing of the leaves at the bottom of peanuts. The planting density of peanuts should be convenient between rows, ventilation between plants, and convenient field management, and the general row spacing should not be less than 20 to 35 cm, and the hole spacing should not be less than 16 cm.

It may be due to a lack of water, so you need to drink more water. If it is because of pests and diseases, it is necessary to kill insects in time.

The yellow leaves at the bottom of the peanut can be drained and the soil can be loosened in time.

<> ferrous sulfate solution is sprayed on the foliage, sprayed 3-4 times in a row, sprayed once every 7 days, and supplemented with iron, which can control peanut yellow leaves; Spraying 1% urea aqueous solution on the foliar surface of peanut plants can prevent and control peanut yellow leaves caused by nitrogen deficiency. 150 grams of ferrous sulfate and 50 grams of zinc sulfate mixed with 60 kg of water can be sprayed on the foliar surface to prevent and control peanut yellow leaves caused by zinc deficiency. In addition, controlling the amount of watering can avoid peanut yellow leaves.

1. What to do with peanut yellow leaves

1. To prevent and control the yellow leaf phenomenon of peanut iron deficiency, the most commonly used is to use ferrous sulfate to spray the foliar surface, the generally available ferrous sulfate solution is sprayed on the foliar surface, sprayed 3-4 times in a row, sprayed once every 5-7 days, and the neutral laundry detergent added to enhance the adhesion of the foliar surface to improve the spraying effect and enhance the absorption function of the foliage.

2. For zinc deficiency and yellowing mixed plots, 150 grams of ferrous sulfate and 50 grams of zinc sulfate can be used per mu, mixed with 60 kg of water, sprayed on the foliage, and 10 grams of chelated zinc can also be supplemented, so that the control effect is better.

3. To prevent and control nitrogen deficiency yellowing, you can apply an appropriate amount of nitrogen fertilizer before watering or rainfall, and the plots where top dressing is inconvenient can be sprayed with about 1% urea aqueous solution on the foliar surface, and after spraying once, the phenomenon of peanut yellow leaves can be effectively controlled.

4. If the peanut is watered too much, it will reduce the permeability of the soil, resulting in insufficient oxygen, the ground temperature plummets, and the roots are basically unable to breathe, thus affecting the nutrient absorption of peanuts. It leads to the loss of nutrients in the soil, or the soil is accumulated due to the lack of timely drainage, resulting in large-scale yellow leaves of peanuts, so it is necessary to pay attention to control the amount of watering, not too much watering, to ensure the normal growth of peanuts.

5. Excessive soil acidity is also one of the causes of peanut yellow leaves, and lime should be used to reduce soil acidity.

6. After the occurrence of peanut pesticide damage, timely spray plant regulators such as Fengqia Duobao plus brassinolide to improve crop nutrition and immunity.

Second, the performance of peanut yellow leaves

1. Nitrogen deficiency in peanuts will cause yellowing and green loss of peanut leaves, and also show that the leaves will become thinner and smaller, and the plants will be short.

2. Zinc deficiency in peanuts is generally manifested as leaf clusters and yellow-white lobular disease.

3. When the iron deficiency of peanut is severe, the leaf veins lose green and then yellow, and the upper new leaves all turn white, brown spots and necrosis appear, and they dry up and fall off.

Peanut yellow leaves may be planted in the soil of peanuts is not suitable for plant growth, need to replace fertile and loose soil to replant peanuts, or may be peanuts in the process of growth received insufficient light, need to supplement peanuts with sufficient light, or may be the maintenance of peanuts to provide unreasonable water and fertilizer, need to provide peanuts with balanced nutrients and nutrient-rich water.

1. Supplemental light

Peanuts are suitable for growing in a sunny environment, if the peanuts absorb insufficient light in the process of growth, there will be yellowing of the leaves, so when maintaining peanuts, it is necessary to provide all-day sunshine for the plants, so that peanuts can photosynthesize normally, and when the light is too strong, it is necessary to shade the peanuts in time.

2. Reasonable fertilization

Peanuts in the process of growth of nutrients demand is larger, peanut fertilizer deficiency will appear leaf yellowing, so in the later maintenance of peanuts need to provide nutrients for the plant reasonably, it is best to use nitrogen fertilizer in the peanut growth period, in the peanut fruiting period to use phosphorus and potassium fertilizer, so that the plant better growth.

3. Reduce moisture

Providing too much water for peanuts during maintenance will lead to water accumulation at the roots of the plant and yellowing of the leaves, so it is also necessary to provide water for the plant correctly when maintaining peanuts, and it is best to provide water for peanuts after the soil is dry and soak all the soil. At the same time, after overwatering, it is necessary to loosen the soil in time to drain excess water.

4. Replace the soil

The soil for planting peanuts is not suitable for plant growth, and there will also be yellowing of leaves, so when maintaining peanuts in the later stage, it is necessary to replace the soil and replant, and it is best to use sandy loam soil with rich organic matter content and good drainage when replacing the soil, so that the plants can grow more vigorously.

The yellowing and wilting of peanut leaves may be a deficiency of nutrients, and if there is a lack of nutrients during growth, the leaves will turn yellow and wilt. If there is a lack of zinc, the leaves will be clustered and yellow-white lobular disease will appear, and zinc sulfate solution can be applied; If there is a lack of iron, the upper young leaves will lose green, and in severe cases, the leaf veins will lose green and yellow, and foliar spraying of ferrous sulfate can be applied; If there is a lack of nitrogen, the lower old leaves will fade green, and the leaves will become thinner and smaller, and foliar sprays can be applied with 1% urea aqueous solution or Trim potassium dihydrogen phosphate fertilizer.

<> replenish water, pour plenty of water into the soil and soak the entire soil. Long-term growth in an arid environment will make the leaves of peanuts yellow; To dilute the fertilizer, it is necessary to pour a large amount of water into the soil to dilute the fertilizer, and too much fertilizer will cause the peanut leaves to turn yellow; To replenish iron, you need to pour diluted ferrous sulfate solution into the soil, and the lack of iron will cause the leaves of peanuts to turn yellow.

After the peanut leaves turn yellow, you need to pour a lot of water into the soil in time to soak all the soil. Peanuts are suitable for growing in a humid environment, if they grow in a drought and lack of water for a long time, the leaves of peanuts will turn yellow. When maintaining peanuts in the later stage, it is found that the soil needs to be watered and moisturized in time after drying to avoid yellow leaves.

After the yellowing of the peanut leaves, it is necessary to pour a large amount of water into the roots to dilute the fertilizer of the soil. Excessive fertilization will cause fertilizer to accumulate in the soil, and the root system of peanuts will not be able to absorb it, and the condition of yellow leaves will appear. When curing peanuts in the later stage, it is necessary to apply diluted compound fertilizer every half a month to supplement nutrition.

After the yellowing of peanut leaves, it is necessary to water the absorbed ferrous sulfate solution into the soil in time. If iron is lacking, the leaves are prone to yellowing. When maintaining peanuts in the later stage, it is also necessary to water ferrous sulfate solution every half a month to make peanuts grow healthily.

After the peanut has yellow leaves, it is necessary to turn the soil in time to make the soil in a state of looseness, ventilation and staring. Peanuts are suitable for growing in sandy soil with rich organic matter content and strong drainage and air permeability, and the soil is in a state of compaction for a long time, which will make peanuts appear yellow leaves.

Summary. The yellowing of peanut leaves is not a cause, don't think about spraying when you see the yellowing of the leaves, it often has no effect and wastes money. In general, there are two reasons why peanut leaves turn yellow:

The first is due to the lack of nutrients, one is the lack of nitrogen fertilizer, the main feature is the yellowing of the old leaves under the plant, and the other is the lack of iron, mainly the yellowing of the new leaves. The second aspect is that due to environmental factors, such as drought, the root system cannot absorb water, or there is too much water accumulation, and the root system is hypoxic.

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The yellowing of peanut leaves and filial piety is not a cause, don't think about spraying when you see the yellowing of the leaves, it often won't have any effect, and it is a waste of money. Generally speaking, there are two reasons for the yellowing of peanut leaves: the first is due to lack of nutrients, one is the lack of nitrogen fertilizer, the main feature is the yellowing of the old leaves under the plant, and the other is the lack of iron, mainly the yellowing of new leaves.

The second aspect of the stuffy sail is because of environmental factors such as hail, such as drought, the root system cannot absorb water, or there is too much water, and the root system lacks oxygen.

What is the matter with yellowing in the middle of the upper mouth of the flower leaf.

1.The pH causes the flowers and leaves to turn yellow: some southern flower cores prefer to change the acorns to acidic soils, while the northern water quality is alkaline, and the leaves gradually fade, turn yellow or even fall off; Acid-loving plants planted in alkaline soil will cause the leaves to turn yellow and fall off2

Overwatering causes the flowers and leaves to turn yellow.

The peanuts are now fine in the last week of flowering, and now the newly grown leaves are yellow in the middle, and the whole is yellowish but not green.

The first aspect is due to the lack of nutrients, one is the lack of nitrogen fertilizer, the main feature is the yellowing of the old leaves under the plant, and the other is the lack of iron, the main focus is the yellowing of the new leaves. The second aspect is that due to environmental factors, such as drought, the root system cannot absorb the water, or there is too much water accumulation, and the root system is hypoxic.

<> yellowing of peanut leaves can generally be washed with high-efficiency water-soluble fertilizer, or sprayed with sugar alcohol liquid fertilizer, sprayed once every 10 days, 2-3 times in a row; Or you can control the amount of watering during the planting process so that the peanuts can grow normally; At the same time, some efficient fungicides can be used to spray the yellow leaves caused by root rot and other diseases; In addition to this, some water-soluble fertilizers can also be applied to adjust the pH of the soil.

1. What to do if the peanut leaves are yellow

1. Use molar high-efficiency water-soluble fertilizer for flushing, or use sugar alcohol liquid fertilizer for foliar spraying, spray once every 10 days, and spray 2-3 times continuously, so that peanuts can quickly absorb and transform nutrients.

2. Control the amount of watering during planting, and do not use flood irrigation for a long time in dry weather.

3. Foliar spraying with molar high-efficiency pesticide fungicide.

4. Apply molar humic acid water-soluble fertilizer to improve the pH in the soil.

5. Spray water on peanuts in time.

2. What is the cause of yellowing of peanut leaves?

1. Deficiency: Nitrogen deficiency will cause yellowing of leaves and loss of green, and the old leaves in the lower part of the plant will turn yellow; Zinc deficiency can also cause yellowing, which is often manifested as leaf clusters. Iron deficiency will cause the veins to lose their green color, and the upper leaves will turn white or even have brown spots, and then dry up and fall off.

2. Overwatering leads to less oxygen in the roots, which leads to the inability of the plant to grow normally, and the inability to deliver nutrients leads to yellowing of the leaves.

3. Peanuts suffering from stem rot or root rot and other diseases will also cause peanut leaves to turn yellow.

4. If the pH value in the soil is too low or too high, it will cause the peanut to be chaotic and the leaves will turn yellow, and the appropriate pH value is.

5. Excessive application of pesticides or residues in the soil will cause peanut seedlings to grow very slowly, and affect the yellowing of peanut heart leaves, which will expand to the whole plant in the later stage.