Analysis of the causes of yellowing of crop leaves

Abnormal yellowing of crop leaves is a manifestation of crop disease, and the reason for finding yellowing is the key to “treating the disease”. Today, Huinong.com Xiaobian came to tell you about the reasons for the yellowing of crops!

1. Lack of water or excessive moisture

The reason why crop leaves turn yellow is the pressure caused by moisture. There are two reasons for too much or too little water. If you see that the soil surface is dry, it is due to lack of water. So you need to water the crops and let the crops absorb the water. But if the crop is over watered, its leaves will turn yellow. If you think the soil is very moist, then you should stop watering regularly.

农作物叶子变黄的原因

2. Lack of sunshine

There are many crops that grow better in the sun, and if the sun is not enough, its leaves begin to turn yellow.

3. Temperature

The color of the leaves is also affected by temperature, as each crop grows at different temperatures, some crops tolerate warm temperatures, and some grow in cold environments. If a tropical plant grows at a cold temperature, its leaves begin to turn yellow.

4. Growth conditions

Some crops are bright, some crops are dark, and crops that like sunlight. If the amount of sunlight is reduced, chlorophyll begins to form in the same proportion, and the color of the leaves begins to turn yellow. 5. Fungal problems Yellowing of crop leaves due to fungal diseases. A common cause is downy mildew. You can see it because it develops rapidly in crops and its leaves are yellow or grayish brown.

农作物叶子变黄都有哪些原因

6. Nutritional deficiency

Some crops, if you don't give them enough nutrients, the color of the leaves gradually changes due to lack of nutrition. Many crops require abundant and fertile soil, and when the potassium content is low, the leaves turn yellow. Similarly, the leaves of crops begin to turn yellow due to the lack of nitrogen. In the same way, if white streaks are seen in the leaves of the crop, this means a lack of magnesium. Use magnesium to add fertilizer. It may also be beneficial if sprinkling salt on crops.

7. Aphids exist

The size of the mites is small, but it can cause considerable damage. These small insects suck the leaves and the leaves begin to turn yellow and brown. You need to look at the back of the leaves and if they exist, clear them immediately.

In addition to the above factors, the leaves of the crops turn yellow. Another reason is that the crops are mature and aging. This is a normal phenomenon and will not be analyzed. This is the reason why Hui Nongwang Xiaobian summed up the possible yellowing of crop leaves. I hope it will be useful to you. If you have any comments or suggestions, please come and talk to us! Thank you!

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