What causes yellowing of plant leaves, and what is the cause of yellowing of plant leaves?

It may be a lack of water, or it may be too much water, which makes it difficult for the roots to breathe, obstructs nutrient delivery, or it can be a lesion in the leaves.

Nitrogen deficiency fertilizer, you can use some urea to bury in the soil, and then wet the soil, which can improve the yellowing of the leaves.

1.The leaves of the plant are yellow, if it is caused by alkaline water and soil, acidic soil should be provided, and acidic substances should be added dropwise.

2.If it is caused by improper water and fertilizer, it is necessary to do a good job in water and fertilizer management, reasonable watering and fertilization.

3.If the soil is not breathable, raise it for about two years to change the potting soil and loosen the soil in time.

4.If the temperature is too high or too low, adjust the temperature and try to keep it within the appropriate range.

5.If it is caused by infection with pests and diseases, it is necessary to strengthen prevention at ordinary times and timely after infection.

The yellowing of plant leaves is mainly caused by factors such as light, water, fertilization, soil, pests and diseases. Usually need to place the plant in a diffuse, ventilated environment to grow, according to the plant's own growth and changes in the surrounding environmental factors, regular quantitative watering and fertilization, and do a good job in the prevention and control of pests and diseases, which can reduce the occurrence of yellowing of plant leaves.

Watering plants too much or too little can cause the leaves to turn yellow. When the plant is overwatered, the soil at the bottom of the pot is too waterlogged, which can cause the root system of the plant to rot and the leaves of the plant to turn yellow. When watered too little, the soil will become arid, and the amount of water absorbed by the plant growth will not be enough, affecting normal growth, causing the leaves of the plant to turn yellow and wilt.

According to the actual situation, water regularly and quantitatively.

Plants need light to grow, and too much or not enough light can cause yellowing of leaves. When the sunlight is too strong, the leaves of the plant will be burned by the sun, causing the leaves to wilt and turn yellow, so take shade and sun protection measures. When the plant is in a long-term lack of light, the plant cannot carry out normal photosynthesis, at this time, the plant should be placed in a place with sunlight scattering and ventilation.

Excessive or lack of fertilization is also one of the causes of yellowing of plant leaves. When excessive fertilization, it will cause organic matter to transpirate and heat up in the soil, burn the root system of the plant, and cause the plant to wither or die. When the fertilization is insufficient, the general plant leaf growth will turn yellow, and nitrogen, phosphorus, and potassium fertilizers are applied in time.

When plants are exposed to pests and diseases, they can also cause yellowing of leaves. At this time, it is necessary to prune off the dead branches, diseased branches, and yellowed leaves of the plant, place them in a ventilated place, carry out maintenance management, and spray dichlorvos, carbendazim, podoldo and other agents to control pests and diseases.

The reasons for the yellowing of plant leaves are: wet yellow, dry yellow, dark yellow, worm yellow, and sick yellow.

1. Wet yellow

Due to the excessive soil moisture, the soil is hypoxic, the roots are difficult to breathe, the root system is hindered in water absorption and fertilizer absorption, and the growth can not be carried out normally, resulting in the pale yellow leaves of the new branches of the seedlings, and the old leaves are also gradually dull yellow, and then wither and die. At this time, the soil should be loosened and drained in time to control the amount of irrigation.

2. Dry yellow

Drought can cause seedlings to wilt. At this time, photosynthesis decreases, growth is stopped, the transportation of photosynthetic products is blocked due to lack of water, and a large amount of organic matter in the plant is hydrolyzed, and respiration is enhanced, thus consuming a large amount of organic matter. Due to the redistribution of water in the plant, the new leaves take water from the old leaves, causing the old leaves to fall off.

Irrigation can be done in time according to the degree of dryness of the soil and the change of leaves, and watering is thorough.

3. Dark yellow

The normal growth of plants requires more than twice the light intensity of the light compensation point, and the organic matter produced by plant photosynthesis can meet the normal needs in addition to compensating for the respiration consumption.

If the light is insufficient, it will lead to smooth differentiation under the plant cells, the seedlings will have weak stems and branches, and the leaves will yellow. Greenhouse plants can be artificially supplemented with light, and different colors of plastic films can be selected to adjust the light quality, so as to increase yield, improve quality or reduce pests and diseases.

4. Worm yellow

In the process of seedling cultivation, it is often attacked by pests, especially all kinds of pests that eat leaves and stinging mouthparts, harm the leaves or suck the juice of the leaves, causing the leaves to shrink and curl, and make the leaves appear spotted and yellow. Attention should be paid to observation, early prevention, and timely and appropriate symptomatic spraying for insect pests.

5. Sick yellow

Nursery eggplant seedlings often have some diseases, such as blight, rust, leaf spot blight, etc., which not only affect the survival rate of seedlings but also make the plant stunted. Therefore, it is necessary to observe the leaves and growth of seedlings frequently, and regularly disinfect the soil of the seedbed with pesticides to eliminate pathogenic bacteria in the soil. It is extremely important to control the incidence of trembling front burning, and once the disease is found, it should be prevented and treated in time.

Summary. Hello dear, what is the cause of yellowing leaves: There can be a variety of reasons for yellowing leaves, and here are some of the reasons:

1.Dehydration: Yellowing of leaves is one of the common symptoms of dehydration in plants.

When plants are unable to get enough water, the chlorophyll in the leaves gradually decreases, causing the leaves to turn yellow. At this point, it should be watered in time to meet the needs of the plant. 2.

Nutrient deficiencies: Plants need to absorb nutrients from the soil to maintain normal growth and development. If certain nutrients in the soil (e.g., nitrogen, phosphorus, potassium, etc.) are insufficient, plants may experience symptoms of malnutrition, including yellowing of the leaves.

Fertilizing with a proper fertilizer can help replenish the nutrients needed by the plant. 3.Low light:

Plants convert sunlight into energy through photosynthesis and synthesize the nutrients they need. If the plant is exposed to low light for a long time, the leaves may turn yellow. Ensuring that plants receive enough sunlight is key to keeping their leaves healthy.

4.Pests and diseases: Infections with certain germs and pests can also cause the leaves to turn yellow.

For example, some fungal diseases can cause yellowing and spotting of leaves. Timely detection and treatment of pests and diseases is one of the important measures to prevent yellowing of leaves. 5.

Temperature issues: Extreme temperatures (too high or too low) can prevent plants from absorbing water and nutrients properly, resulting in yellowing of leaves. Proper adjustment of the ambient temperature can help plants regain their health.

Hello dear, what is the cause of yellowing leaves: There can be many reasons for yellowing leaves, and here are some of the reasons:1

Dehydration: Yellowing of leaves is one of the common symptoms of dehydration in plants. When plants are unable to get enough water, the chlorophyll in the leaves gradually decreases, causing the leaves to turn yellow.

At this point, it should be watered in time to meet the needs of the plant. 2.Nutritional deficiencies:

Plants need to absorb nutrients from the soil to maintain normal growth and development. If certain nutrients in the soil (e.g., nitrogen, phosphorus, potassium, etc.) are insufficient, plants may experience symptoms of malnutrition, including yellowing of the leaves. Fertilizing with a proper fertilizer can help replenish the nutrients needed by the plant.

3.Lack of light: Plants convert sunlight into energy through photosynthesis and synthesize the nutrients they need.

If the plant is exposed to low light for a long time, the leaves may turn yellow. Ensuring that plants receive enough sunlight is key to keeping their leaves healthy. 4.

Pests and diseases: Infections with certain germs and pests can also cause the leaves to turn yellow. For example, some fungal diseases can cause yellowing and spotting of leaves.

Timely detection and treatment of pests and diseases is one of the important measures to prevent yellowing of leaves. 5.Temperature issues:

Extreme temperatures (too high or too low) can prevent plants from absorbing water and nutrients properly, resulting in yellowing of leaves. Proper adjustment of the ambient temperature can help plants regain their health.

Kissing, because of nutrient insufficiency: Corn has high requirements for nutrients in the soil, especially nutrients such as nitrogen, phosphorus and potassium. If these nutrients are not enough in the soil, corn seedlings are prone to yellowing of leaves.

Fertilizer should be applied reasonably before planting, and fertilizer should be applied in a timely manner to supplement nutrients according to the growth situation.