Many gardeners, especially beginners, ask questions about how to save tomatoes if the lower leaves turn yellow after planting. The concern is fully justified, since the tomato is a capricious culture, susceptible to fungal and viral diseases, and also strongly reacts to the shortcomings of a number of elements in the soil. Untimely measures taken to address problems often lead to the loss of seedlings and crops.

To correctly determine the cause of yellowing of tomato leaves after planting, it is necessary to assess the nature of the lesion. Often inexperienced vegetable growers begin to spray plants in a panic with everyone, only aggravating the situation.

When there is no cause for concern

It should be noted that a healthy strong bush can shed the lower leaves as unnecessary, first of all getting rid of the cotyledons. This period may coincide with planting in the ground or greenhouse.

If after transplants root system injured, then the plant redistributes resources to the growth point, taking food from the lower part. But at the same time, the plate turns yellow evenly, no pronounced spots and foci are formed.

Lack of elements

The reason why the lower leaves of a tomato turn yellow is not always due to disease. The top of the plant, with a lack of nutrients, begins to pull them from below, after which the leaf plates weaken and dry out.

The need for feeding with this or that element can be determined by a number of signs.

• Nitrogen: the leaf blade turns yellow evenly, while the plant itself looks fragile, the stem is thin. You can help by watering with a urea solution (30 g per 10 liters of water).
• Potassium: the veins remain green, the lesion begins at the edges, along which a brownish border forms, the leaf curls up and gradually dries up. The reason may be too acidic soil, since in this case potassium is used to deoxidize it. The lack of an element is made up for with potassium nitrate, diluted in a proportion of 1 tbsp. spoon on a bucket of water.
• Magnesium: by outward signs magnesium starvation of a tomato resembles potassium starvation, but there is no pronounced folding of leaves. The veins remain green, and the yellowness around them appears as a small mosaic. The problem is solved by spraying with magnesium nitrate (5 g per 10 liters of water).
• Molybdenum: expressed in the appearance of speckled chlorosis, in which the lower leaves of a tomato gradually become covered with brownish blotches, after which they turn yellow and curl upward. For treatment, top dressing is used with a 0.02% solution of ammonium molybdate (2 g per 10 liters of water).

With a lack of phosphorus, the lower leaves of a tomato also suffer first, but they turn not yellow, but purple.

Advice for those who prefer natural fertilizers: nitrogen deficiency can be replenished with mullein infusion, chicken droppings, granulated vermicompost, compost. Potassium and phosphorus will be provided by wood ash and humates.

Violation of the irrigation regime, lighting and poor soil quality

The reason why the lower leaves of a tomato begin to turn yellow after planting may be the soil. Plant roots require loose and moderate nutrient earth enough oxygen must be supplied to them. If the soil is dense, packed, covered with a crust, then the suction function is inhibited at the roots, the tomato begins to save food, starting from the bottom. A solution to the problem is to gently loosen and moisturize. Ideally, the tomato is best transplanted into a lighter potting soil. Too high acidity also leads to the death of the lower layer of foliage.

Violation of the watering regime also has a detrimental effect on the plant. With a regular excess of moisture, the air exchange of tomato roots is disrupted, the soil turns sour. The lower leaves of a tomato also turn yellow when dried, since nitrogen and phosphorus from them move to the stem. It happens that watering is done in hot weather, water gets on the leaves, as a result of which there is a burn, white spots.

Often, seedlings are kept at home for a long time or in too cramped containers, which leads to the formation of a dense lump of roots. This is also the reason why, after planting in the ground or greenhouse, the lower leaves of a tomato turn yellow and die off. In this case, the roots take a long time to turn around and begin to function normally.

Diseases

If you can cope with a lack of nutrition with several dressings, then diseases, especially viral ones, have to be dealt with not only with special drugs, but also with a change in the microclimate.

"Dropsy" - seedling disease

Gardeners often complain of an unknown disease in which the lower leaves of tomato seedlings are covered from the inside with small water bubbles. Subsequently, they burst, leaving a yellow dry stain. The defeat begins from the edges, gradually passing to the entire leaf plate. Characteristic feature is that after planting in a greenhouse or in the ground, this phenomenon, as a rule, disappears. It is likely that the reason is the quality of the soil, violation of the lighting and irrigation regime, too stagnant air (especially with double-glazed windows).

Some experienced growers recognize in this disease edema (oedema) - dropsy of leaves, more characteristic of peppers. But there are differences: with oedema, not bubbles appear, but growths that do not burst and do not wear off (moreover, on all leaves), and in the case of tomatoes, it is worth sliding your finger along the back of the leaf plate, as all the pustules flow out.

The disease is not contagious, since it is a consequence of a violation of the metabolic processes of a particular plant. Bushes of other varieties standing next to the affected tomato may not be affected - it all depends on how comfortable their root system is. Therefore, it makes no sense to arrange "quarantine". If all tomatoes are of the same variety and are planted in equal conditions, then everyone will get sick. Gradually, as the bubbles burst, the leaf becomes stained, turns yellow and dries up.

Treatment methods:

• arrange seedlings less frequently, ensuring good air circulation and ventilation;
• if sunlight not enough, it is recommended to purchase a phytolamp;
• let the soil dry, then transplant tomatoes or sprinkle soil with vermiculite or agroperlite;
• protect the container with the plant (if it is transparent) from direct sunlight to avoid overheating of the roots (you can wrap it in newspaper).

The main reason why dropsy appears is considered to be overflow, as well as too dense soil.

Fungal lesions

It happens that after planting in the ground or greenhouse, in a completely healthy tomato seedling, after a while, spots are found on the lower leaves, which, merging, lead to their yellowing and drying out. It is likely that the spores of the fungus that caused the septoria disease (white spot) got on the plant. Characteristic signs: randomly spaced gray specks with a light halo.

Brown spot also begins its development from the lower leaves of tomatoes. The plant is covered with brown spots with lemon edging. The lower leaves also turn yellow from cladosporium.

Fungus control measures:

• decrease in air humidity;
• soil and plant treatment with antifungal agents (Bordeaux mixture, "Fitosporin");
• regular ventilation;
• timely removal of the lower "waste" leaves.

It is wiser to prevent fungus and bacterial contamination with preventive measures, once every two weeks, treating with "Fitosporin". The basis of the drug is the spore culture of Bacillus subtilis, which inhibits the development of pathogens. The main plus - "Fitosporin" is completely non-toxic. Spraying can be carried out at any stage of growth.

Treatment with "Fitosporin" should be carried out in cloudy weather, as the bacteria dies in bright sunlight.

As a rule, the reasons why only the lower leaves of tomatoes turn yellow after planting are easily eliminated. Serious disease usually affects the entire plant, including the tops and stems. If there are no signs of fungus, then you should feed the bush and optimize the conditions for its growth.

A good tool for strengthening the immunity of tomatoes and other crops is the drug "Epin" (adaptogen). It will help to cope with diseases, as well as neutralize their consequences.

Yellowed leaves are the first signs that the plants are uncomfortable. Yellow leaves of seedlings may indicate the appearance of a disease. There may be several reasons why tomato seedlings begin to turn yellow.

Yellowing of tomato seedlings is quite common. Strong seedlings suddenly begin to turn yellow, wither, spots appear on the leaves, the upper tips begin to curl. To get rid of these problems and help the plant to recover, one should understand the cause of the appearance of a bad ailment and take all the necessary measures to prevent it.

There are many reasons for yellowing. In order to take action, you first need to figure out why the leaves began to turn yellow.

The most common care and planting mistakes

Yellowed leaves signal the appearance of problems associated with with the wrong care.

The main reasons are:

• Lack of sunlight and excess moisture
• Frequently seeded seedlings
• Lack of micronutrients
• High soil acidity
• Lack of space after disembarking

Often, seedlings in the northern and middle regions suffer from a lack of light. Abundant watering aggravates the situation, and the leaves begin to turn yellow.

Often sown seedlings also cause a lack of light. It grows, gets stronger, begins to block the sunlight with foliage.

Lack of micronutrients leads to yellowing. Trace elements leading to yellowing:

• Potassium
• Magnesium
• Iron
• Manganese

If the earth too salty, the leaves will also start to turn yellow. Saline soil can be identified by white or yellowish spots that stand out on the surface of the earth - bloom.

Incorrectly selected containers- the cause of yellowing. If the container is too small, the growing roots become cramped, the seedlings begin to hurt, the leaves turn yellow.

If the roots of the seedlings are cramped, the tomato can get sick.

What to do if the leaves of tomato seedlings turn yellow

Having dealt with the causes of yellowing, let's look at ways to prevent them.

With a lack of sunlight, seedlings put on the sunny side windows to window sills. For additional lighting, lamps are used that extend the daylight hours at home by 5 hours.

Seedling material must be watered correctly.

Improper watering also leads to yellowing. With a lack or excess of moisture, the seedlings turn yellow. Watering is necessary rarely, but abundantly.

If planting is too frequent, shading occurs, transplanting in separate pots will help fix this.

• • If there is not enough nitrogen, the leaves turn pale, fall off, new ones grow smaller. Feeding with nitrogen will eliminate the nitrogen deficiency.
  • If the new leaves become curly, and those that are older turn yellow and fall off, it is necessary to water or feed with potassium nitrate.
  • Leaves turn yellow between veins - lack of magnesium. Spraying with magnesium nitrate will correct the problem.

The appearance of brown spots indicates a lack of zinc. New ones become stained, dry, fall off. A solution of zinc sulfate will correct the situation.

• If they turn light green or even white, the seedlings do not have enough iron. Foliar feeding is required.
  The leaf lacks manganese, it begins to turn yellow at the base, stains in a checkerboard pattern. In this case, you can fertilize and spray the plant with a solution of potassium permanganate.

If the leaves turn yellow between the veins, there is not enough magnesium.

The soil can become saline when irrigated with hard water or an excess of fertilizers. In this case, the soil is removed from the surface by 3 cm and watered with soft or rainwater. It will be possible to feed only after a few weeks.

Seedlings that have turned yellow due to lack of space for roots can be saved if they are planted in deeper and more spacious containers.

Diseases

The cause of the appearance of yellow leaves of tomatoes can be the occurrence of diseases.

The appearance of yellow spots provokes fungal disease entitled fusarium... With this disease, the leaves not only turn yellow, but also wither. The seedlings are sprayed with Fitosporin 2-3 times, after 1-2 weeks the procedure is repeated.

Often the seedling material of tomatoes is affected by the disease blackleg... It occurs when over-watering. The roots become thin and black. To prevent the occurrence of a black leg, observe temperature regime and proper watering.

A common tomato disease that also affects eggplants, potatoes, peppers is called Phytophthora... Phytophthora occurs with excess moisture and low temperatures. Brown spots are formed. Late blight develops very quickly, urgent action is needed.

To combat late blight, a solution of sodium chloride will help. To do this, dissolve 0.5 tbsp of salt in 5 liters of water and spray the seedlings.

Why do the leaves turn yellow

It is not so difficult to understand the reasons if you pay attention which leaves of the seedlings turned yellow... There are several reasons for the yellowness of the lower leaves:

• Excess watering
• Lack of light
• Excess fertilizer

Cotyledon leaves may turn yellow due to abundant watering. The roots of the plant begin to choke in the water and they begin to turn yellow.

Tops the tomato turns yellow with a lack of phosphorus.

There are other factors that can lead to yellowing of the leaves.

After transplant

Seedlings may turn yellow after transplanting. The fact is that the plant needs time to acclimatize in a new place.

In this case, shade it out from the sun for a couple of days.

On the windowsill

If the seedlings are on the windowsill, the reason may be sunburn... In this case, it is necessary to protect it from direct sunlight.

After the pick

Leaves may turn yellow after picking. Some gardeners when picking damage the roots too much seedlings, which leads to stress.

After landing in the ground

It is necessary to plant tomato seedlings in soil that contains enough copper, which is necessary for the normal growth of tomatoes. With a lack of copper, it begins to turn yellow.

In the open field

V open ground seedlings may begin to turn yellow due to a lack of trace elements in the soil.

Yellowing can provoke weather... Too cold weather disrupts the plant's metabolism. In hot weather and infrequent watering, tomatoes can get burned.

What tomato seedlings are missing

Seedling material must be constantly monitored, even a slight change in the color of the plant signals changes or even the onset of the disease.

Important feed correctly and on time... The first time it is fed is when the first real leaf appears. The second time - 7-10 days after the pick.

How to feed

The first feeding is made from copper solution... Top dressing is carried out after one real leaf appears. To do this, prepare a solution of copper at the rate of 1 tsp. copper per 1 liter. water. Seedling material is watered with the prepared solution. Thus, the seedlings will be treated against late blight.

For good growth, seedlings need nitrogen... The second feeding is done 7-10 days after the pick. Urea is used for feeding. 1 tbsp. l. urea per 10 liters. water. The seedlings are abundantly watered with a solution.

You should not ignore even the slightest changes, because this speaks of improper care, and can also cause disease. With the correct identification of the cause of yellowing, it will be possible to prevent problems and grow strong, healthy seedlings.

Tomatoes are a very ancient culture. There is information that they were grown in the 8th century AD, the ancient Aztecs did it. Only hundreds of years later, vegetables came to Europe, while the ancestors considered tomatoes to be a big berry.

What do tomato seedlings need to grow?

Newcomers to summer cottage affairs often make many mistakes, which lead to negative result... In order for the seedlings to grow from year to year and not disappoint, you need to gain experience and knowledge. It is not enough to plant seeds in the ground from the garden to get seedlings. All agricultural techniques must be followed from the first stages.

Things to consider:

• the nutritional value of the soil - it gives strength and immunity to future seedlings, which means that it is less affected by diseases, that is, tomatoes will not turn yellow, wither, turn black;
• light - even from the school course in biology, we all know that plants need light, otherwise they simply die. This is one of the main rules. There is not enough light - lamps are needed so that the lighting is at least 10-12 hours a day;
• watering - even a child knows too. If flowers or garden crops do not water, the result will not be long in coming. The water must be settled so that the soil does not accumulate heavy elements. Also, it should not be icy so that the roots are not stressed;
• top dressing - it is not enough just to plant seeds in a nutritious soil, since the seedlings will soon take everything out of the soil. Then there will be a nutritional deficiency, immunity falls from here, and the seedlings will begin to hurt.

What conclusion can be drawn from the above? If you do not know why the leaves of tomato seedlings turn yellow, then it is worth reviewing all agricultural techniques and identifying shortcomings. If measures are taken in time, then the seedlings can be easily saved and obtained in the future. good harvest... Let's take a closer look at everything in the next section.

Causes of yellowing of tomato seedling leaves

Feeding errors

As you already understood, any crop is very sensitive to soil nutrition. Tomatoes respond well to top dressing, they love them. It is especially important to give regular fertilizers to those varieties that grow tall and have a powerful root system. Fertilizers should include a complex of elements in order to fully compensate for the entire deficit. If some mineral is not enough, then problems begin, including yellowing of the leaves of seedlings in tomatoes. But beginners will immediately ask the question, how to understand what exactly the seedlings lack? It's pretty simple.

It is better to prevent any problem than to deal with the consequences. Therefore, before the beginning of the summer season, buy not only elbows for seedlings, seeds, but also immediately various fertilizers, additional lighting.

The main elements that are needed for tomatoes are potassium, nitrogen, zinc, manganese, iron, copper, phosphorus. They should be in optimal combination- Of course, it is difficult for you to make the perfect feeding yourself. But the complex preparation is easy to buy at a gardening store. You can also solve the problem when you have already understood which mineral is in short supply at the moment - replenish it with the help of an appropriate fertilizer. There will be a separate section about them. So, how to determine why the leaves of tomato seedlings turn yellow.

Deficiency of elements:

• if you notice that the foliage of the seedling has begun to lose its green pigment, it turns yellow, regularly falls off, and new leaves are formed small, then most likely the reason is the lack of nitrogen in the soil;
• if you see that young leaves on seedlings begin to curl, old ones lose color, yellow spots appear, then this is most often a lack of potassium in the soil;
• magnesium deficiency may indicate yellow along the veins on the leaves;
• if the leaves first turn yellow together, then they even become white then it is iron deficiency;
• on seedlings you see two types of spots - brown and yellow, then this is a lack of zinc;
• the manganese deficiency can be suggested by the following fact - the leaves turn yellow here and there, often in a checkerboard pattern, and the process starts from the base.

These signs, upon close examination and observation for several days, can even be seen by a beginner. As soon as you understand which element is in short supply, you need to replenish it with top dressing. As a rule, the situation will quickly begin to change for the better, because we repeat once again, the tomato culture is very responsive to fertilization. But is it only a lack of fertilizer that can cause a problem when the leaves of tomato seedlings dry out. Of course not. Perhaps the reasons are much simpler.

Insufficient lighting

This problem is easy to identify and solve. We all know that where there is a lot of sun, the place is moderately humid, all plants - whether cultivated or just weeds, smell sweet. And vice versa. Tomatoes are very photophilous, of course, they can suffer from sunlight. It is optimal to place the seedlings on the southeast window, east window, or put it side by side, creating a light lace penumbra.

If the window is south, there is a lot of sun on it, which begins to burn strongly in spring, and the region is warm, then the seedlings may begin to turn yellow, because they are hot. In addition, direct rays can burn delicate seedlings, especially if they still lack moisture. The easiest way to solve this problem is to remove the boxes with tomatoes on another window or place them next to them on the table so that there is a light shade from the curtains, also watch out for watering, the soil should not dry out and even less lag behind the walls of the pot.

But the situation is different - what to do when tomato seedlings turn yellow from lack of light? Add additional lighting.

Lamps for supplementary lighting:

• sodium - include a spectrum that is optimal for seedlings, very well help seedlings to grow. But such lamps require space and are not cheap;
• phytolamps - ideal for plants on the spectrum, used in greenhouses and at home, suitable for growing for sale. But this light is also not cheap, and also has pink color that irritates the eyes. Ideal for those who grow seedlings in a separate room;
• fluorescent lamps are cheap and quite well suited for small cultivation seedlings. Lamps are economical, but emit little red spectrum, and are also dangerous if broken. Also, a minus is a small coverage area;
• diodes - very a good option but not cheap. Diodes can be purchased in any color, they are economical, safe and durable.

If you have just asked a question, and is not it easier to put a simple incandescent lamp over the container, then do not rush to draw conclusions. No - incandescent lamps are extremely unsuitable for seedlings, they do not emit the spectrum it needs, they waste a lot of energy and, in addition, threaten tender seedlings with burns. Which lamps to choose is up to you. If you plan to deal with seedlings constantly, then it is better to immediately spend money once, but buy high-quality lighting. If you are a beginner and are just trying yourself, then take simple fluorescent lamps.

All lighting can be bought at gardening stores, hardware stores, online stores. In the latter case, make an order in advance, as delivery is often delayed.

Consequences of close planting of seedlings

Well, everything here is simple and easy to solve. If you often sowed seedlings, dived afterwards not into separate cups, then it is quite possible that the seedlings are suffering from their own counterparts. Its roots are closely intertwined in the ground, which is important to take into account later when transplanting, so that there is no injury. It takes a lot of seedlings in the tray and a lot of nutrition, but we have already told you about the deficiency of elements. In addition, seedlings shade themselves, and we also just mentioned this.

An excess of plants often leads to an excess of moisture in the soil, then diseases can begin to develop there, and the roots rot. The latter directly affects the leaves - they turn yellow, fall off, the seedlings wither and die. The solution is simple - plant the seedlings more freely, or better in separate cups with new clean soil.

The soil

Of course, the seedlings need very good soil. You already understood that it should be nutritious. But that's not all. The earth must pass air well for oxygen to reach the root system, then it will develop well, feed the entire above-ground part. If the soil is heavy, you loosen it with difficulty, then before it's too late it is better to replace the soil with a new one. The mistake could be that you simply took the soil from the garden, and it is not suitable for you. It is not enough to just add top dressing to the ground, you also need to add sand, peat or perlite to it for air permeability. It also affects the excess water content.

An important factor is the acidity of the soil. It is tested using litmus paper, which is sold in pharmacies, garden stores, or on the Internet. Tomatoes do not like sour soil, like many crops. The normal pH is 6-6.5. If the soil is acidic, that is, the indicators are much lower than 6, then lime, chalk, fluff are added, dolomite flour, mix and re-check the performance with paper.

If you did not find litmus paper, then you can understand that your soil in the area is acidic by the vegetation that grows violently on such soils - horsetail, hosts, heather, plantain.

But not only acidic soil has a bad effect on seedlings, but also salty. You can understand that you are using salty soil, and it has a bad effect on the seedlings, by the fact that a white or yellow bloom appears on the surface of the earth. It is better to transplant seedlings into new soil... If you cannot pick up the soil yourself, then just buy a ready-made one.

Improper watering

Another most common and easily resolved reason. You can understand that you are heavily flooding the earth by the fact that your soil hardly dries out, mold has appeared. Also a clear sign of the bay is that the cotyledon leaves of tomato seedlings turn yellow. From excess moisture, a pathogenic environment begins to develop, which leads to diseases, rotting of the roots. Watering the seedlings is necessary as the soil dries, every day it should be only slightly damp and well loosened. You can neither fill the seedlings, nor, conversely, let them dry out when the soil moves away from the walls of the trays. Water needs to be defended for a day.

Diseases

Of course, one of common reasons the appearance of yellow leaves on fragile seedlings can be a disease.

• Rot, which occurs against the background of excess moisture. The solution is to reduce watering or transfer to new soil. Also keep an eye on room humidity and temperature.
• Fusarium. It can also occur against a background of excess moisture and in the cold. Adjust watering, temperature. The seedlings are treated with Fitosporin twice in a row, after which they take a break of 14 days and repeat the treatment again.
• Late blight. If the leaves turn yellow and brown spots appear, then urgently spray them with a salt solution - 1/2 tablespoon of salt per liter of water. You can apply a solution of the drug "Trichopol" in water. 10 tablets per bucket and pour 15 ml of brilliant green here. The same remedy can be used to prevent ailments during flowering.

What to do if tomato seedling leaves turn yellow

Let's summarize all of the above. You already know why tomato seedlings turn yellow, what to do in this case, too, could understand. We will tell you about filling the deficit of one or another element in the last section; in all other cases, everything is pretty simple.

• If you have flooded the seedlings, then it is advisable to remove the seedlings from the soil and assess the damage on the roots. Then transplant into a new, well-drained and nutritious composition.
• Observe the temperature in the room within 23-26 degrees.
• If you notice yellowing, then you can immediately feed the seedlings with a complex preparation, if you know for sure that the reason is not acidity, not in the bay.
• If the soil is acidic, then you will have to transplant it into a new soil, having previously checked it with litmus.
• If the seedlings began to turn yellow after the pick, then shade it and water it only occasionally, let it grow stronger.
• If the seedlings are cramped, then rather separate them, and remember that the light needs to be thought out in advance.

Seedling fertilizer tomato

Urea

This tool will help exactly to form a good aerial part or simply greens of seedlings. The thing is that urea contains a lot of nitrogen - more than 45%. They begin to feed her seedlings after germination, then every 14-20 days. After picking, they are kept for 10-14 days for the seedlings to take root. Sold in stores in the form of white balls. Approximate consumption is 20-30 grams per bucket of warm water.

• affordable price;
• high nitrogen concentration;
• very quick effect;
• simplicity and versatility in use;
• prevention of ailments;
• the possibility of using for foliar feeding.

• nitrogen should not be given to plants during flowering and after, otherwise the fruits will not set;
• it is important to observe concentration, as seedlings can get burned;
• slightly acidifies the soil.

Manganese solution

It is with them that you can compensate for the deficiency of manganese in the soil. It is used as foliar spraying - once every 7-10 days during the entire growing season. The solution should be slightly pinkish.

• serves as an excellent prevention;
• budgetary funds;
• disinfects;
• can be used always, and also for soil pickling.

• high concentration can lead to plant death.

Ash

One of the oldest and most popular remedies. Wood ash includes several elements at once - potassium, calcium, magnesium, sodium, phosphorus and others in smaller quantities. The recipe may look like this - a glass of ash is dissolved in a bucket of water, kept for 2 days. Can be spilled and used for spraying.

• cannot be used as a full-fledged feed, it is better to combine ash with organic matter;
• the effect of feeding is quite short, you will have to make it often.

Potassium nitrate

This top dressing contains not only potassium, which is needed both for seedlings and future fruits, but also phosphorus and nitrogen. They are fed with saltpeter and seedlings, and bushes in the beds. The rate is 1% solution, feeding is combined with watering. Dilute 10 grams per bucket of water.

• helps to fill the deficiency of elements well;
• you can use the entire growing season;
• affordable price;
• prevention of ailments.

• concentration and precautions must be strictly observed, as you can get poisoning.

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If the leaves of tomato seedlings turn yellow and dry

6. A banal reason, but it can provoke yellowing of all seedlings - a lack of soil in the pot. If this happens to your tomatoes, then try to move them to a large container as soon as possible.

1. If tomato seedlings turn yellow, starting from the lowest leaves, and at the same time bright blue or red veins are observed, then we can assume a lack of nitrogen, which is one of the most important elements for tomatoes. At the same time, such a phenomenon as small leaves is also often observed. In this case, liquid will help nitrogen fertilizers which in as soon as possible will correct the situation.

Tomatoes - favorite plant our hostesses. They put their whole soul into them and take care of young seedlings as well as children. And the housewives are very worried when their seedlings begin to hurt and wither. Why tomato seedlings turn yellow and wither and what to do about it - read below.

If white spots appear on tomato seedlings and leaves dry

The first is a fungal disease called septoria, or white spot. The specks on the leaves will be off-white with dark edging. Septoria is transferred with the soil, it is very difficult to cure it, so such seedlings will be unviable. To prevent this disease, it is better to warm up well before planting the seeds, or, conversely, freeze the soil in order to destroy the spores of the fungus.

Tomatoes at the seedling stage are among the most unpretentious plants... Their seeds usually have good germination, and the sprouts develop well and tolerate picking. But nevertheless, it sometimes happens that when growing a tomato, an inexperienced grower is faced with various problems: the seedlings dry out and leaves fall off, spots appear on them, etc. Let's look at the reasons for this "behavior" of plants and find out how to prevent such errors.

Why does tomato seedling turn yellow? This problem sometimes arises among both novice gardeners and experienced ones. If tomato seedlings turn yellow, then future harvest may have a decrease in quality and quantity.

If tomato seedlings dry leaves after picking

The most common cause of yellow leaves in tomato seedlings is cramped crockery. The roots do not fit and begin to rot. Quite often, this is due to a nitrogen deficiency. Insufficient or excessive watering may also be the cause. Tomato seedlings turn yellow from improper growing conditions. This is low light, too acidic soil and lack of nutrients, especially nitrogen. Young seedlings must be ventilated. If there is a loggia, then it's great - on sunny days, already in April, the seedlings can be taken out on the loggia for a day, and cleaned on the windowsill at night. And in May, you can already keep it on the loggia, but make sure that the temperatures on the loggia are not too low at night.

Then, when you bought them on the market, and they are greenhouse, and you planted them in open ground. and with the first sunbeam, or frost, the plant begins to die.

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Why tomato seedlings turn yellow

Yellowing of the leaves is a common occurrence when growing seedlings. The reason is a violation of the technology of growing seedlings: a violation of planting density, a violation of temperature regimes, a violation of irrigation and nutrition and feeding regimes. Leaves can turn yellow with a lack of nutrition and with an excess. For example, over-feeding with urea or poultry droppings can cause plants to turn yellow and die. There may be 2 reasons here. Or they poured in and they began to hurt. Or froze (maybe blowing from the window) I water. When the leaves begin to drop with a slightly pink solution of potassium permanganate, or I spray (instead of watering) with Epin. Put it in the sun. let them dry up .. or even to the "black leg" not far (the constriction on the trunk near the ground) and perish. 7. With the wrong transplantation of tomatoes, sometimes root clots are obtained, which also do not allow seedlings to develop fully, because through such a jungle the flow of water and substances is very difficult. 2. Another common cause of yellowing is potassium deficiency, which you will need to manage with fertilizers. A bit of science Another option why the leaves with spots on tomato seedlings dry even with normal watering is sunburn. White spots in this case will be transparent. Such a situation may arise if the weather was cloudy for several days in a row, and then it turned out to be a bright sunny day. Not shaded seedlings standing on a light windowsill can very easily burn themselves on the scorching sun's rays. The drug "Epin" will be able to help her regain strength, as well as the obligatory shading with the help of ordinary newspapers. As a rule, the yellowness of the leaves is the result of excessive watering in combination with a lack of illumination. When growing tomato seedlings, it should be remembered that it should be watered sparingly, each time drying the soil. If you "fill" the sprouts big amount water, this will certainly affect the condition of the leaves and roots of the plant. Usually, the leaves turn yellow and gradually dry out. In particular, this situation can be aggravated if the seedlings lack light. Therefore, always keep it on the lightest windowsill, shading at noon. The reasons for the yellowing of leaves can be different. Sometimes the lower leaves turn yellow and fall off, and the next leaves grow without any changes. Leaves can turn yellow due to exposure to low temperatures during frost. The reason for the yellowing of overgrown, but high-quality seedlings may be a lack of land. Yellowing is also possible if a dense root lump has formed during transplantation, which has led to a lack of nutrition, disease and root death. Such seedlings always take root for a very long time. If the leaves of tomato seedlings turn yellow, then the most common reason is excess watering... Do not water the seedlings too often, you need to wait for the time when the earth dries up. Otherwise, the plant may not only turn yellow, but also die. The grown seedlings will delight with thick stems and green foliage. Tomatoes turn yellow When growing seedlings, you must observe optimal conditions: food, top dressing, watering, temperature regime, planting density, sunlight. There are three main reasons seedling leaves turn yellow. 8. Poor lighting is another reason for the yellowing of the leaves. Try your pets to extend the daylight hours with the backlight by about 4-6 hours. 3. This reason is also from the category of lack of nutrients, which include zinc. Its lack is manifested not only yellow leaves, but also with specks, as well as curling up the sheets. Fertilizers will come to the rescue again. All plants contain a substance called chlorophyll, which is an important constituent. Thanks to chlorophyll, the connection between the sun is maintained, environment and the plant itself. Chlorophyll, with the help of sunlight, filters out the necessary organic matter... If this process does not occur, then you can hear about such a disease as chlorosis, as a result of which the leaves of tomato seedlings turn yellow.

Why does tomato seedling turn yellow? Why did the leaves of tomato seedlings turn yellow?

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It also happens that a well-developed tomato seedling begins to turn yellow and wither after the opening procedure. This can occur when the root is injured during transplantation, and

Elephant17

You can solve the problem of drying yellowed leaves by transplanting seedlings into fresh, good soil... In the process of transplanting, carefully examine the roots of the plants: they should be healthy, white. If the roots have signs of rot, yellowness or even blackened, such seedlings cannot be saved.

Yellowing of tomato seedlings is also observed with a lack of nutrition. More often, there is not enough nitrogen and other trace elements. Seedlings may turn yellow immediately after transplanting them into the ground. This is due to minor damage during the transplant itself, as well as exposure to lower temperatures, interaction with dissolved in the soil minerals.​

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When the seedlings are planted in the greenhouse, it must be remembered that tomatoes do not like high humidity - they can quickly get sick with late blight.

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When late blight attacks the plant. Here you have to be in time before the rains. while the plant is small, if so, three with interruptions treat it with an Acrobat, Tatu, or other preparations. Good luck. And also tomato leaves may turn yellow from a lack of moisture or an excess of fertilizers in the soil.

You need to water the seedlings warm water about 30 degrees and this should be done when the lump dries up, preferably in the morning, not in the evening. When watering cold water roots rot and leaves turn yellow. Tomatoes need to be watered with warm water, even mature plants.

It is insufficient illumination(it is recommended in rural areas from the end of April for a day to take out seedlings in heated greenhouses, in the city - on loggias), excessive watering (after picking, as well as after transplanting into the ground, it is recommended not to water the seedlings for a week, only to spray if it is very hot), poor soil nutrients and minerals (especially the lack of fertilizers containing nitrogen affects).

Nikolai Sosiura

All the reasons described refer to diseases that develop more than one day. It is quite simple to save seedlings in such cases, and now you know how to do it. But what happened if the seedlings turned yellow in one day and began to wither? Let's talk about that too.

4. If the yellow color of the leaves gradually turns into yellow-white, then you need to think about the lack of iron. Fortunately, such an ailment disappears literally in a day, of course, with the condition that you choose the right feeding.

Causes of yellowing seedlings Also when picking too early.

After transplanting, the leaves may wither, in which case, be sure to shade the seedlings from the sun, and in a couple of days its condition will return to normal. But do not put it in a poorly lit room, otherwise the opposite problem will arise - the leaves of tomatoes will begin to fade and stretch. The maximum concentration should be no more than 1 percent. At higher concentrations, punctate burns may occur. For this purpose, it is convenient to use liquid fertilizers... They are considered to be more secure. For each bush, it is necessary to provide a sufficient amount of land, one bush should have about three liters of land.

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Tomato seedlings did not turn yellow leaves

Is the soil not very acidic? Tomatoes do not like high acidity. If this item is excluded, then my versions:

Tomato seedlings begin to turn yellow if space and nutrients begin to run out. This usually happens if the seedlings are closely planted. Or in jars and is already large enough, but it is not yet planted in the ground. Seedlings may turn yellow due to lack of light. Or, on the contrary, they dropped her off, and the weather is quite hot outside, here in the sun from habit (lack ultraviolet rays) the leaves turned yellow.

Lorelei

Why does tomato seedling turn yellow? Why did the leaves of tomato seedlings turn yellow?

There are two more reasons that can cause yellowing of the leaves, but their influence is already less significant than the first three.

Sharp yellowing of seedlings

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5. Malnutrition of the root system of tomatoes also very often leads to yellowing. Such violations occur usually due to damage to the roots, which are very sensitive to physical stress, as well as changes in temperature. Most often this happens when transplanting tomatoes into open ground. Do not worry, tomatoes after a while cope with chlorosis caused by these factors on their own.

1. In this paragraph, we will consider the most common causes of yellowing, to identify which you need to carefully examine your seedlings.
2. But even if your tomatoes were not attacked by fungi before the pick and did not receive sunburn, the likelihood of yellowing of the leaves still exists. It's all about the quality of the purchased soil mixture that you used for seedlings. If you do not mix the soil yourself, be careful: an unscrupulous manufacturer could well spare nitrogen or overdo it with peat. And then, due to an overabundance or lack of nutrients in the soil, the plants will not develop correctly and get sick. So, with a potassium deficiency in seedlings, the lower leaves usually turn yellow and dry (the so-called old ones, which appeared the very first).

Strymbrym

White spots on seedlings can appear for two reasons.

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When correct execution planting, meeting deadlines, feeding problems with tomatoes will not be.

Barsko

- do not water the tomato seedlings until the ground is dry. It is not recommended to keep the soil for tomato seedlings moist for a long time. Water the soil only when it is dry enough. There is not enough nitrogen (fertilize with something nitrogen-containing); Tomato seedlings can start to turn yellow and even die due to poor soil. Then it urgently needs to be transplanted into another box and into another land.

Errors in care, unfavorable conditions and various diseases can cause yellow leaves in tomatoes. If the cause is not found and the problem is not corrected, the plants turn yellow and get sick further, as a result of which the yield decreases. What to do if tomatoes turn yellow and dry? We will help you deal with this problem in this article.

Tomatoes in the ground and greenhouse immediately or after a few days may begin to turn yellow for several reasons:

1. Low air temperature. If, after planting in open ground, the temperature is low at night or even during the day, the tomato seedlings will begin to turn yellow and wither. Therefore, be sure to harden the plants before planting in the garden, and cover the seedlings with non-woven material. If frost is expected, be sure to close the greenhouse at night.
2. Root damage... It is recommended to transplant tomato seedlings by the transshipment method, in otherwise you can damage the roots. As a result, the root system will not take root and work well, and the tomatoes will turn yellow. You can also damage the roots when loosening the soil.
3. Improper watering... The first time after planting in a greenhouse and a greenhouse, tomato seedlings are watered after 10-14 days. Water the plants regularly and abundantly. Too rare, or, conversely, frequent watering leads to the appearance of yellow spots on the leaves of tomatoes, which can be a sign of a disease. Plants get sick most often from over-watering.

The lower leaves of tomatoes turn yellow - what to do

Yellowed lower leaves on tomatoes most often indicate unfavorable conditions and care errors. To prevent the plant from spending energy on their restoration, remove the leaves with a sharp pruner.

What to do:

1. Do not thicken the planting.
2. Protect tomatoes from hypothermia.
3. Water the plants moderately.
4. Protect tomatoes from pests and diseases.
5. Introduce top dressing in a timely manner. Plants not enough molybdenum if yellow spots first appear on the first pair of lower leaves, and then the leaves turn yellow completely. Distinctive feature- the veins are green, and the leaves curl upward. Feed the tomatoes with ammonium molybdate by dissolving 2 grams of the drug in 10 liters of water.

Tomato leaves turn yellow and curl

What to do:

1. Inspect foliage for pests... Aphids or spider mites they suck the juices from plants, as a result of which the leaves dry, turn yellow and curl. If pests are found, use folk remedies or chemicals.
2. Remember how long ago you fed tomatoes... With a lack of some elements and minerals, foliage may begin to turn yellow and curl. Follow the dedicated link and find out - When and how .

The foliage of a tomato turns yellow - the reason is a lack of fertilizers

How to find out by the yellowed leaves what minerals or elements they lack.

The edges of the leaves turn yellow

In a tomato, the edges of the leaves begin to turn yellow with a lack of potassium and nitrogen:

1. Old leaves turn yellow at the edges, and young ones curl with a lack of potassium. What to do? Feed the plants with a solution of potassium nitrate, dissolving one tablespoon of fertilizer in 10 liters.
2. The leaves first turn yellow at the edges, and then die off... The bushes themselves weaken and stretch out - a lack of nitrogen. What to do? Pour with urea solution (for 10 liters of water - one tablespoon).

Yellow spots appeared on the leaves of the tomato

If the plant is not sick, and there are no pests on it, pay attention to the nature of the spots, since with a lack of certain elements, the foliage turns yellow in different ways:

1. The foliage turns yellow and deformed at the base, and the veins turn brown - boron deficiency... Dissolve 10 grams of regular boric acid in 10 liters of water and water the plants.
2. Yellow-green veins and yellow spots on the leaf plate - plants need manganese... Spray the foliage with a 1% potassium permanganate solution.
3. Yellow spots on the midrib and in the middle of the leaves - lack of iron... The foliage will regain color in a day if you spray or water the bushes with iron chelate or 1% solution of ferrous sulfate.
4. Red veins, gradual yellowing of the leaf plate, thin and lignified stems - all this signs of sulfur deficiency... Treatment of foliage with magnesium sulfate, 10 grams of which is diluted in a bucket of water with a volume of 10 liters, will help.
5. Buds fall, leaves turn yellow and their tips are deformed, fruits become covered with dark spots, if plants lack calcium. An excess of nitrogen in the soil can interfere with the absorption of calcium by plants. Therefore, introduce fertilizer by spraying the foliage with calcium nitrate (20 grams of fertilizer per bucket of water).

Tomato leaves turn yellow and wither

There may be several reasons:

1. Exposure to direct sunlight... Plant tomatoes in a well-lit area without direct sunlight at midday. If the plants grow in the sun, cover them with non-woven fabric or shade.
2. Lack of moisture... Think back to the last time you watered the plantings. Maybe they don't have enough moisture and it's time to water the tomatoes.
3. Cooling landings... In transplanted seedlings, foliage may turn yellow and wither during hypothermia. Water the plants with lukewarm water, and if the nights are cold, cover with a non-woven fabric.

Why tomatoes turn yellow outdoors

Reasons and what to do:

1. Scorching sun rays... Outdoors, tomato foliage can be exposed to direct sunlight on hot days. It is recommended to cover the plantings with lutrasil or other covering material.
2. Low temperatures ... Low temperatures also have a negative effect on plants. With a prolonged cold snap, the roots of plants cease to absorb nutrients from the soil, as a result of which the tomatoes begin to turn yellow. If frost or prolonged cold snap is expected, build a greenhouse over the tomatoes or cover them with non-woven fabric.
3. Waterlogging of the soil in the garden... Tomatoes love abundant, but not frequent watering. In rainy weather, water can accumulate in the beds, which is why the roots of plants begin to rot and the leaves turn yellow. In such weather, it is better to build a greenhouse over the tomatoes, and mulch the soil with needles or cut grass. Affected tomatoes with yellow foliage are recommended to be fed with potash fertilizers.
4. Overdrying the soil... In the open field, in hot weather without rain, the earth dries out quickly, as a result of which the roots also dry out, and the plant itself does not receive nutrients, the leaves of the tomatoes begin to turn yellow and dry. Regular and abundant watering will help correct the situation.
5. Pests... If leaves turn yellow on tomatoes outdoors, inspect them for pests. Tomatoes can be attacked by a whitefly, scoop, bear, aphid, and in the soil they can live and damage the roots of the May beetle larva. You can destroy pests using folk remedies(onion or garlic infusion). If there are a lot of harmful insects, use according to the instructions insecticidal preparations "Tomato rescuer" and others.
6. Disease affection... Tomatoes affected by fungal diseases lag behind in growth, the foliage turns yellow and withers. Diseased plants practically do not produce a crop. Observe crop rotation and agricultural techniques, process seeds and soil before planting in order to prevent tomato from being affected by various diseases.

Why do tomatoes turn yellow in a greenhouse and a greenhouse

Unfavorable growing conditions, lack of soil cultivation, thickened plantings, errors in care are the main reasons for yellowing of leaves in tomatoes in a greenhouse and a greenhouse.

What to do:

1. Lack of light... Bushes that are planted too close will grow over time and shade each other. Be sure to keep a distance when planting tomatoes, focusing on the plant variety.
2. High humidity air... After watering, greenhouses and hotbeds must be ventilated, otherwise the air humidity will be too high under the film and the tomato foliage will begin to turn yellow. Permissible humidity for tomatoes is 60-70%. High humidity is one of the causes of fungal diseases.
3. Lack of nutrition... Even if the soil was fertilized during planting, over time, the nutrients are washed out during watering. Therefore, tomatoes should be fed regularly. If, due to lack of nutrition, the leaves have already turned yellow, use complex mineral fertilizers"Zdraven", "Agricola" or others.
4. Sour soil... For tomatoes, the acidity of the soil should be no higher than 6.5 pH. Higher acidity can lead to yellow foliage. Use dolomite flour to lower the acidity.
5. Watering errors... Tomatoes should be watered regularly and abundantly, avoiding overdrying and waterlogging of the soil.
6. Pests and diseases. As in the open field, in a greenhouse and a greenhouse, tomatoes are also susceptible to attacks by pests and, under unfavorable conditions, are affected by diseases. The main sign of such lesions is yellowing of the leaves or the appearance of spots on them. You can get rid of pests with insecticides, and for fungal diseases, use Quadris, Trichodermin or other fungicides.

To prevent yellowing of foliage in an open field, a greenhouse or a greenhouse, observe the crop rotation, maintain a distance when planting seedlings, water the tomatoes at the root, take care of the plants correctly and provide them suitable conditions protecting against high humidity, cold weather and high temperatures.