What to do if tomato leaves turn yellow? What s going on with the yellowing of tomato leaves

If the fertilizer is insufficient, then it is necessary to apply compound fertilizers containing nitrogen, phosphorus and potassium, and there are some reasons for lack of water, and it is necessary to water the appropriate amount regularly. If you receive a pest or disease, cut off the leaves of the diseased branches and insects and spray some medicine to control the insects.

You can clean up the wilted leaves, spray some insecticides to avoid pests, and water some water, but don't water too much, apply a little fertilizer, and that's it.

Watering more, avoiding direct sunlight, and keeping it cool and ventilated can solve this problem well.

1. Overwatering and root rot

In the process of tomato growth, if the watering is too frequent, the soil is wet or dry for a long time, it is easy to cause poor growth of tomatoes, each watering can not let the soil accumulate water, the soil should also maintain good drainage, if it is planted in the yard tomatoes, can not be planted in low-lying places.

If you water too much, the leaves will easily turn yellow, and the color of the leaves will fade, and if there is too much water for a long time, the soil will often accumulate water, which will easily lead to a lack of oxygen in the roots, which will eventually lead to root rot and plant death.

2. Soil agglomeration

In the process of planting tomatoes, you can fill some well-rotted manure under the soil, or add some organic fertilizer water regularly in the spring and summer growing season of tomatoes, which helps to prevent soil agglomeration and keep the soil loose.

Regularly filling the soil with some compost soil can improve the soil. If the soil is already agglomerate, do not continue to water, loosen the soil properly, and then sprinkle the soil with some powdered slow-acting organic fertilizer, or supplement some organic fertilizer water, which can improve soil compaction.

3. Leaf spot

Tomato infection with leaf spot is also very common, that is, infected with fungal diseases, in the soil moisture or air humidity environment is easy to breed, the maintenance location is poorly ventilated, or the tomato is not set up a good shelf, is not the main cause of leaf spot disease.

In another case, it is because the soil carries fungal diseases, resulting in leaf spot, no matter what the cause, what you need to do is to cut off the yellow leaves in time and spray fungicides in time, such as the common chlorothalonil or methyl tobuzine solution. Improve environmental ventilation, and appropriately thin the bottom of the stems and leaves that are excessively dense.

Be careful not to water the tomatoes at night, the leaves should not remain with water for a long time, and the location of the tomatoes should be maintained with more light every day.

4. Blight

Fusarium wilt is also a common fungal disease of tomatoes, usually caused by Fusarium oxysporum protosporus, which infects plants through their roots, hindering the tomato's ability to attract water, causing the plant to wilt and rarely causing the tomato to hang up.

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.

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.

Causes of yellowing of tomato leaves.

1. Soil salinization: tomatoes cannot be continuously cropped, and when they are planted continuously for more than three years, they will cause the growth of tomatoes in Senshiyu to be malnourished and yellow leaves appear.

2. Deficiency: Tomato growth has a greater demand for nutrients, and if there is a lack of nitrogen, potassium and magnesium, it will lead to yellowing of leaves. Over-application of chemical fertilizers and poor root development can cause yellow leaves.

3. Root diseases: Tomato root rot and wilt will affect the development of roots, resulting in yellow leaves, and serious disease will also lead to dead trees.

Tomato leaves are treated with yellowing.

1. Watering: Tomatoes should be deeply turned before planting, watered with water, sinking the salts, applying farmhouse fertilizer, and applying microbial fertilizer to decompose the salts.

2. Fertilization: Tomatoes need to reduce the use of chemical fertilizers, properly carry out farm fertilizer outside the roots, and can also use seaweed fertilizer to irrigate the roots and promote rooting.

3. Pruning: Tomatoes should be cut off from diseased leaves, sprayed with fungicides, and talked about soil-borne diseases at the roots, which can be treated with high-temperature simmering sheds, and sprayed with pesticides in time for above-ground diseases to reduce the incidence.

Prevents yellowing of tomato leaves.

Zinc fertilizer can be applied to the hole before transplanting this section of tomatoes, and it is best to transplant with azoxystrobin after dipping the roots, and irrigate the roots once with Amimiao in the early fruit stage, which has the function of preventing leaf yellowing and aging.