Teacher! What causes tomato leaves to be yellow like this? How to solve it?

Hello, tomato leaves turn yellow for many reasons.

Cause. 1. Man-made damage to the root system.

When plowing and hoeing, we must pay attention to the combination of depth and lightness. The place far away from the plant can be appropriately deeper, and the place near the plant should be appropriately shallow, so as to avoid artificially causing root damage.

Cause. 2. Apply uncooked raw chicken manure.

The use of organic fertilizers such as chicken manure must be fully decomposed before it can be used. If the chicken manure is fully decomposed, it will not cause the occurrence of root burning and seedling, and it will avoid the tomato leaf rolling and yellow leaves that occur for this reason.

Cause. 3. Yellow leaves caused by drought.

During the tomato growth period, it is necessary to water in a timely manner to ensure that the soil moisture is wet and dry, and do not control the water excessively to control the growth of the plant. To prevent plant growth, you can spray methostatin or mequat to control, and it also has the effect of promoting reproductive growth, avoiding excessive water control and causing tomato leaf curling and yellow leaves.

Cause. Fourth, the yellow leaves caused by the lack of nutrients.

Tomato continuous cropping is easy to cause the lack of trace elements in the soil due to partial consumption, if you do not pay attention to supplementation, it is easy to cause tomato leaf curling and yellow leaves, such as zinc deficiency and iron deficiency are easy to cause tomato yellow leaves.

After the tomato is transplanted, the fixed roots are not done well, the new roots are less drawn, and the seedlings are slow, so it is easy to appear that the seedlings are yellow and weak, and when encountering unstable climate, it is easy to die and rot the roots. Therefore, rooting promotion after transplanting is the foundation, and watering and applying sea food rooting agent and foliar fertilizer can effectively supplement the medium and trace elements required for tomato growth, promote the growth of hairy fibrous roots, robust growth, and strengthen seedlings.

Only old leaves have either one of the deficiencies (calcium, iron, zinc, magnesium, boron) or bacterial diseases. If the parietal lobe is the first to develop and the infection is fast, mosaic virus may be considered.

Summary. This occurs when the root system of the plant absorbs nutrients poorly, or does not use nutrients well. In addition, this situation is also related to continuous stubble and improper fertilization, such as the application of non-rotten organic fertilizer caused by root burning, and long-term continuous application or excessive application of chemical fertilizer caused by soil compaction, and the high concentration of salt ions in the soil leads to poor root growth and uncoordinated nutrition.

What's the deal with yellowing of the top leaves of a tomato?

The pro is inquiring for you.

This occurs when the root system of the plant absorbs nutrients poorly, or does not use nutrients well. In addition, this situation is also related to continuous stubble and improper fertilization, such as the application of non-rotten organic fertilizer caused by root burning, and long-term continuous application or excessive application of chemical fertilizer caused by soil compaction, and the high concentration of salt ions in the soil leads to poor root growth and uncoordinated nutrition.

Summary. Hello, dear, I'm happy to answer your <>

Here's why. There are many reasons why tomato leaves turn yellow, here are some possible reasons:1

Dehydration: Tomato plants need plenty of water to stay healthy, and prolonged deprivation of water can turn the leaves yellow. 2.

Nutrient deficiencies: Deficiencies in important nutrients such as nitrogen, phosphorus, and potassium can cause tomato leaves to turn yellow and eventually shrivel. 3.

High temperature and dryness: If the weather is too hot and the humidity in the air is too low, then the tomato leaves will gradually turn yellow. 4.

Pests and diseases: Certain pests and diseases, such as powdery mildew, yellowing leaf curl virus, aphids, etc., can cause tomato leaves to turn yellow. 5.

Too wet and too cold: An environment that is too humid or too cold can also cause tomato leaves to turn yellow. The above reasons may cause the tomato leaves to turn yellow, and you can analyze and take corresponding measures according to the actual situation.

<> what causes the yellowing of tomato leaves.

Hello, dear, I'm happy to answer your <>

Here's why. There are many reasons why tomato leaves turn yellow, here are some possible reasons:1

Lack of water: Tomato plants need plenty of water to stay healthy, and prolonged lack of water can cause the leaves to turn yellow. 2.

Nutrient deficiencies: Deficiencies in important nutrients such as nitrogen, phosphorus, and potassium can cause tomato leaves to turn yellow and eventually shrivel. 3.

High temperature and dryness: If the weather is too hot and the humidity in the air is too low, then the tomato leaves will gradually turn yellow. 4.

Pests and diseases: Certain pests and diseases, such as powdery mildew, yellowing leaf curl virus, aphids, etc., can cause tomato leaves to turn yellow. 5.

Too wet and too cold: An environment that is too humid or too cold can also cause tomato leaves to turn yellow. The above reasons may cause the tomato leaves to turn yellow, you can analyze and take corresponding measures according to the actual situation.

<> is that the tomato leaves in the hollow of the ground are yellow and do not grow.

Hello dear. If the leaves of the tomato you grow are yellow and not long, there may be several reasons for the reed: 1

Lack of water: Tomato plants need plenty of water to stay healthy, and if the soil is not hydrated, it will cause the tomato leaves to turn yellow and not grow long. 2.

Soil problems: If the soil contains too much salt, or if it lacks certain essential nutrients, such as nitrogen, phosphorus, potassium, etc., it will affect the growth of tomatoes. In addition, planting in the same place for a long time can also lead to poor soil deterioration, affecting the normal growth of tomatoes.

3.Pests and diseases: Some pests and diseases, such as tomato yellowing leaf curl virus, tomato spot disease, powdery mildew, etc., can cause tomato leaves to turn yellow, deformed, and not grow.

Workaround:1Take care to keep the soil moist, but don't overwater it to avoid water accumulation in the soil.

2.Fertilizers and ridges rich in organic matter and nutrients should be used, such as well-rotted compost and organic fertilizer. 3.

Regularly change the soil or plant in well-drained highlands, hills, etc., and avoid planting in the same place for a long time. 4.For pests and diseases, it is possible to use corresponding pesticides to control the infiltration, or remove the infected plants in time.

Hopefully, these methods will help you get your tomatoes back to growing healthy. <>

<> kiss, what about the soil.

Summary. Hello dear, dry weather may also cause tomato yellow leaves, especially the lower leaves of tomatoes, long-term dehydration leads to leaf loss of green aging. In addition, watering in a high temperature environment, if the amount of watering is too large, will also lead to this situation;

Hello dear, dry weather, it is also possible that the posture will cause the yellow leaves of tomatoes, especially the lower leaves of tomatoes, long-term dehydration will lead to green aging of the leaves. In addition, watering in a high temperature environment can also lead to this situation if the amount of watering is too large;

The following measures can be taken: reduce the frequency of watering and control the amount of watering;

There is also the poor air permeability of the soil, the phenomenon of agglomeration and compaction, which will affect the normal growth of the root system of Sishengsong tomato, resulting in the leaves can not obtain nutrients and water from the root system, and gradually turn yellow and fall off, so after finding that the soil is agglomerate, it is necessary to cultivate and weed in time to improve the air permeability of the soil, and then apply organic fertilizer water and animal manure to the soil to avoid soil compaction again.

This can also be the case if there is a lack of nutrients; Tomatoes should be often covered with well-rotted organic fertilizer or nitrogen-rich fertilizer.

Yellow leaves of winter tomatoes.

Tomatoes planted with yellow leaves in winter greenhouses may be due to the following reasons: 1. The root system is not good 2. Low temperature obstacle 3. Insufficient fertilizer 4. Nutrition can not keep up 5.

Solution The root system is not excited: the nutrient bag is packed with nutrient sand, and the preparation method of nutrient sand is: 100 grams of fermented animal manure, 10 grams of urea, 3 grams of diammonium, 300 grams of sandy soil, mix well, three small holes are pierced at the bottom of the bag, and the roots of the seedlings are packed into the nutrient bag, planted in the soil together, and the entire nutrient bag is buried, and the round is filled with water, and the soil can be covered.

The root system will develop in a few days, and soon the roots will be thick and the leaves will be vigorous.

Low temperature obstacles: Heat up the greenhouse in a timely manner, and try to match the growth characteristics of tomatoes. Insufficient fertilizer:

It is necessary to supplement fertilizer and water at regular intervals, as well as to spray foliar fertilizers appropriately. Brewing some high-nitrogen fertilizers such as urea before fruit set, and some high-potassium fertilizers after fruit setting is conducive to tomato fruit expansion. Spray some foliar fertilizers, such as magnesium sulfate, zinc sulfate, manganese sulfate, jujube macro, etc.

Nutrition can not keep up: supplement the problem of insufficient nutrients in tomatoes, containing boron, zinc, silicon, calcium and other trace elements, promote the transportation of tomato carbohydrates, is conducive to the synthesis of tomato protein, accelerate the development of tomato flowers, is conducive to tomato flowering and fruiting, can greatly improve the flowering and fruiting rate of tomatoes, promote tomato fruit ripening early, and the fruit is more difficult to do. It can also improve the resistance of tomatoes to low temperature, disease and stress.

Pests and diseases: Yellow leaf diseases can be sprayed with Manhattan iodine fungicides to control the disease.

There are many reasons why the leaves of small tomatoes turn yellow, which can be related to fertilizers, pests and diseases, and moisture. Only by doing a good job of maintenance can you grow well. Let's go with the gardener uncle to understand the causes and solutions of small tomato yellow leaves.

1.Insufficient nutrients during the growing season, and the yellowing of the leaves of the small tomatoes may be caused by insufficient fertilizer. The need for fertilizer is very high, and sufficient fertilizer is conducive to the growth of leaves and flowers.

Solution: If the leaves turn yellow due to insufficient fertilizer, cut off the yellow leaves, and then apply a compound fertilizer containing nitrogen, phosphorus and potassium to the tomatoes, which can promote the growth of the tomatoes. 2. During the maintenance of pests and diseases, if the maintenance is not done properly, the leaves of the tomato will turn yellow after being attacked by pests and diseases.

Don't stop using chemicals in between. After a while, you can get rid of pests and diseases. 3. Lack of water during the growth period, if the tomato is in a state of water shortage for a long time, the leaves will dry up and turn yellow.

Solution: If it is caused by insufficient moisture, it is necessary to water the tomatoes in time to replenish the water. In the later stage of maintenance, in order to avoid poor growth of small tomatoes due to lack of water, it is necessary to adjust the watering method and water the small tomatoes reasonably to avoid excessive water damage to the roots.

Tips] During the growing season, baby tomatoes need proper watering and fertilization, as well as plenty of light. Before flowering and fruiting, it is necessary to increase the amount of water and fertilizer to provide sufficient nutrients. During the maintenance period, it should be sprayed regularly, generally once every 20 to 30 days, which can effectively control pests and diseases.