What to do if the top or bottom leaves of tomatoes turn yellow


Tomatoes require special growing conditions. Each cultivation procedure is stress for them, and the appearance of yellow foliage is its external manifestation. However, a color change also indicates serious violations or diseases, therefore, when such symptoms are detected, it is important to quickly and accurately identify the cause and eliminate it.

Tomatoes in a greenhouse

Tomatoes planted in the greenhouse are already protected from external influences, the task of the summer resident is to create a favorable microclimate inside. Humidity above 70% will lead to yellowing and rotting of the leaves. To maintain the level, it is advisable to regularly ventilate the greenhouse. With a lack of moisture, containers with water are placed inside the greenhouse.

Tomatoes do not need daily watering. They are rarely irrigated, but abundantly. At the same time, water is poured under the root, and not on the leaves and stem of the plant.

The most common diseases, the first signs of which are yellowness are late blight and fusarium. Late blight occurs due to a violation of the microclimate and affects the tops of plants. Fusarium is spread by spores and affects the root system. Plants, soil and equipment are treated with antifungal agents. It is not advisable to take seeds from such tomatoes, since there is a high risk of getting infected seedlings. Yellowed tomatoes may lack trace elements and minerals. During the period of growth and ripening of fruits, plants need complex nitrogen fertilizers.

So that tomatoes do not suffer from a lack of nutrients, it is necessary to observe the timing of the addition of fertilizing.

When the root system is damaged by mechanical action, for example, by loosening, yellowness appears due to the direction of all the forces of the plant to restore the roots. As soon as this happens, the leaves will return to their previous color. If the cause is pests that feed on the underground part of tomatoes, you should immediately begin to fight them.

Leaves turned yellow after planting in the ground

If you plant seedlings grown at home or greenhouse conditions in open ground, they will adapt to the new environment for a long time. Therefore, yellowed leaves are removed so that the plant does not waste energy on them. Tomatoes are sheltered from direct sunlight and wind, fed with potash fertilizers to increase stress resistance. When buying seedlings, you may encounter overfeeding. To make the seedlings look strong, they are actively flavored, but the plants in the future will only form a green mass, and the flower buds will not be laid.

When entering a new habitat with a balanced soil composition, the seedlings lack the previous nutrition, the bush fades, and the leaves turn yellow. Such seedlings continue to be fertilized, but not exceeding the permissible dosage.

A damaged or malformed root system is another cause of yellow foliage on tomatoes. The underground part of the plant is not fully functional and does not supply the necessary nutrients. When growing seedlings in small containers, the roots form a lump, outgrow and enter the stage of withering away. It happens that after planting tomatoes in the ground, the weather worsens. If the temperature drops to 15-16 ° C, the seedlings stop growing and turn yellow.

In a severe cold snap, tomatoes are fed with potassium humate, covered with foil or plastic bottles, and in the greenhouse they close the doors and put a lighted candle securely dug into a jar of earth.

If the garden soil is depleted, the transplanted plant turns pale and yellow, but the leaves do not wilt. In this case, nutrition is required with a complex mineral dressing in order to add all the necessary substances. It is worth starting to feed the plant no earlier than 10 days after planting.

If the upper leaves turn yellow

With a calcium deficiency, the growth of tomatoes slows down, the upper leaves turn yellow, burn marks appear on them, the tips are deformed. The lack of a macronutrient is observed when an excess of nitrogen fertilizers is introduced into the soil: they interfere with the absorption of calcium. They feed such bushes with calcium nitrate, spraying tomatoes. With a lack of sulfur, the upper leaves turn yellow, the veins become bluish-red, the stems become tough and brittle. Spraying with a solution of magnesium sulfate will save the bushes.Iron deficiency is manifested by yellowing of the foliage from the stem to the tips. The veins are discolored, remaining green at the edges. The tomato forms small flowers and is stunted. Treatment of green mass with a solution of ferrous sulfate will quickly fill the gap. Signs of manganese deficiency are similar to iron deficiency. The difference is in the variegation of leaves and darker veins. Plants rarely receive less manganese. Tomatoes are restored by foliar treatment with a solution of manganese sulfate. With a deficiency of boron, yellowness appears on the upper leaves with brown veins, flowers fall massively. To prevent this, tomatoes are sprayed with a boric acid solution.

Only the lower leaves turn yellow

If a healthy green mass grows at the top, yellowing of the leaves is less dangerous, since it does not always indicate a plant disease. Tomato gets rid of old leaves to channel energy into the development of fruits. When pruning tomatoes, follow the rules: do not remove more than three branches at a time, leave at least 6 true leaves on the plant. This amount is sufficient for the normal development and growth of the bushes. In order for the tomatoes to feel good, it is necessary to follow the recommendations for watering, feed them regularly and in a timely manner, and fight diseases and pests. And then even such a capricious culture will bring a harvest of juicy fruits.

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Causes and treatment, symptoms with a photo of tomato chlorosis

Chlorosis of tomatoes often brings inconvenience to gardeners. Yellowing of the leaves can be cured, but when the leaves and shoots begin to dry out, the harvest is difficult to save. During the growing period of tomatoes, it is important to fertilize on time and provide proper care. And the preventive measures taken in advance will also increase the yield and quality of tomatoes.

The disease develops due to a stop in the production of chlorophyll in the leaf plates, as a result of which the process of photosynthesis is suspended. This violation leads to yellowing of tomato leaf plates, weakening of the root and system and a deterioration in yield.

A weak root system cannot feed on essential nutrients. There is a shortage of iron, sulfur, phosphorus, zinc, magnesium. Their lack is acutely reflected in the green parts of tomatoes, especially in the leaves.

Infectious and non-infectious, carbonate types of chlorosis

Chlorosis is of different types. The most dangerous is the infectious type, the causative agents of which are viruses. They develop directly in plant cells. Infection is carried by pests and through non-disinfected garden tools. Also, a plant that was planted on infected soil suffers from infectious chlorosis.

Non-infectious is often due to a lack of minerals, especially iron. It is iron that is responsible for the production of chlorophyll and the rich green color of foliage. Edaphic chlorosis, which is caused by improper care and unfavorable weather conditions, is also referred to as non-infectious.

The carbonate or alkaline type of chlorosis often manifests itself. Lowering the acidity of the soil, provokes an increase in the pH level. As a result, the ability of the root system to absorb essential minerals from the soil is lost.


Causes of yellowing tomato leaves

It is worth saying that growing tomatoes is a fairly simple and straightforward process, and the vegetable itself is considered one of the most unpretentious. If you notice any deviations from the norm in the development of the plant, you should immediately understand the reasons and make attempts to eliminate them, the same applies to the yellowing of tomato leaves.

The fact is that when growing any crop, be it a vegetable or a fruit, there are requirements, not meeting which leads to the development of certain problems. Thus, if mistakes were made when growing tomatoes, a problem such as yellowing of the foliage of tomato seedlings may develop. We list the most common answers to the question why the leaf of tomato seedlings turns yellow:

  • Too intensive watering
  • Tight container for tomato seedlings before the picking stage
  • Lack of nitrogen in fertilizer
  • It's too dark in the greenhouse
  • Soil acidity values ​​are too high
  • Root system pathology or mechanical damage to the roots
  • Sudden changes in temperature, most often hypothermia
  • Violation of the humidity regime (excess or lack)
  • Poor or insufficient feeding
  • Fungal disease

There are a lot of reasons for the yellowing of the leaves of tomato seedlings, but most of them can be called in one phrase - violations of the conditions of care and cultivation, since much depends on the person, namely on his actions aimed at growing bushes. Next, we'll talk about the most common causes that cause yellow foliage.

Root system problems

In fact, any problems with seedlings almost always signal that something is wrong with the roots. For example, with regard to tomatoes, it very often happens that their roots grow so much that they turn into one continuous lump that cannot be untangled. Of course, such metamorphoses cannot but affect the appearance of the plant, that is, the state of the leaves. The problem can be corrected with the help of a transplant so that the plant has more free space, but this will not guarantee that the leaves will regain their normal appearance, that is, they will stop turning yellow and the bush will not die.

It also happens that the root system gets too much space, which allows the bush to restart the new root growth system too often. As a result, it turns out that young roots grow all the time, which leads to yellowness on the foliage, after which they dry out, making room for new shoots. If the problem is not noticed in time and solved by replanting the bush, then there is a high probability that the tomatoes will die.

Temperature changes

Tomatoes are most afraid of a sharp cold snap, as they are a heat-loving plant. And this applies not so much to the upper part of the plant as to its root system, that is, the area that is located directly in the ground. The lower foliage on tomato seedlings can begin to turn yellow after the first incident, and often this does not go unnoticed, there is a possibility that the bush will simply stop bearing fruit.

Tomato seedlings are afraid of frost

To make sure that the appearance of a yellow color on the lower leaves is exactly hypothermia, you should carefully consider the tomato leaf. With hypothermia, bluish spots will appear on the greens along with yellow ones.

Damage to the root system

Often the cause of yellowing of tomato seedlings is banal mechanical damage to the roots. This can happen at any stage of plant care, for example, when planting seedlings, while loosening the soil or during the period of getting rid of weeds.

Usually, such a problem should not be solved in some special way, everything is resolved by itself, that is, the tomatoes take root on their own. Usually, it takes about 2-5 days for the adventitious processes of the roots to develop, after which the cotyledon leaves will regain their green color.

Moisture deficiency

Despite the fact that tomatoes have a well-developed root system, the root can develop up to 2 meters in length, the plant does not tolerate a lack of watering. The fact is that the lower feeding part of the root does not lie so deep, only at a depth of about 30 centimeters.

If you do not have enough watering, there is a chance that the leaves will turn yellow. Often, those leaves that are at the top suffer, in addition, their shape changes, they curl inward towards the tips.

High humidity

If you water the plant too often, it also appears on the bush's appearance. First of all, active growth of leaves will occur, which will occur in the first half of the growing season. It is worth saying that with the active development of the vegetable, you can easily skip this moment, which will lead to the foliage turning yellow. If nitrogen ceases to penetrate into the soil, the leaves will become more lethargic and will certainly acquire a characteristic yellow-brown tint, and then completely fall off. Moreover, this will affect the fruits, they can crack and lose their presentation.

Deficiency of trace elements in the soil

Not only nitrogen deficiency negatively affects the condition of tomato foliage. The appearance of yellow spots on the leaves can provoke a lack of many other trace elements. For example, if the bush has received less calcium, then chlorosis may appear, manifesting itself as apical rot on the tops. In addition, one of the characteristic features is the yellow color of the foliage.

If, in addition to a change in the color of the leaves, you notice some thickening of the leaves, as well as a thickening of the stem, then we can say that the culture does not receive enough sulfur. In the case when, in addition to the leaves turning yellow on tomato seedlings, dry shoots are observed, even if the plant receives a sufficient amount of moisture, then we can say that there is not enough manganese in the soil.

There are characteristic signs that there is not enough iron in the ground if you notice that the foliage has turned yellow, and the leaves have twisted to the top. If the leaves contain not only yellow, but also red, then you should think about the fact that there is not enough magnesium in the top dressing.


Prevention of tomato diseases

Disease prevention and proper care are the key to a tasty and large tomato harvest.

Growing tomatoes: what you need to observe.

1. There should not be an excess of fertilizers.
2. Respect for plants, broken shoots can cause disease.
3. Do not allow the soil to dry out, carry out mulching.
3. Transplant seedlings on time in your region, the soil should warm up, tomatoes are afraid of hypothermia.
4. When planting seeds, choose resistant varieties to diseases and pests.
5. Observe the distance between plants when planting seedlings - at least 50 cm.

The yellowing of tomato leaves is associated with a lack of potassium. Feed the plants with potash fertilizers or ash. To do this, dilute 200 grams of wood ash in 10 liters of water, water 0.5 liters under the plant.


Cucumbers have yellow leaf edges: 5 reasons

Some external changes in the plant always indicate a problem. We will look at the most common causes of yellowing of leaves:

  1. Insufficient amount of UV rays. This reason is the simplest, which can be caused by a banal lack of sunlight. Why does this happen? This is due to the lushly blooming beds of cucumbers, the upper leaves of which often block the access of the rays to the lower ones. As a result, the latter begin to actively turn yellow. To avoid this, it is enough to periodically pick off the yellow leaves. This will not affect the quantity and quality of the crop, it will only slightly spoil the appearance of the bush.
  2. A lot of moisture or lack of moisture. Cucumber is a moisture-loving plant. If the air temperature is not critical, then you can water the bushes several times a week, but if the summer is very hot, then watering is needed every day. Otherwise, the root system of the cucumber will crawl up in search of moisture and immediately dry out. Waterlogging is no less dangerous.This contributes to root rot, which will affect primarily the condition of the leaves.
  3. Fungal diseases. Another reason for the yellowing of the edges of the leaves can be such diseases - fusarium, pityosis, etc. Fungi can be noticed by the dark brown spots on the leaves, which eventually spread around the entire perimeter of the leaf. so be aware: if extreme heat changes dramatically to cold weather, then the first thing to wait is fungal diseases.
  4. Pest attack. Most often, cucumbers suffer from such pests - whitefly and spider mites. These parasites are absorbed into the leaves of the plant and destroy all juices. As a result, yellowed edges of the leaves. What to do in this case? The best thing is spraying with special preparations before flowering.
  5. Lack of nutrients. Almost all summer cottages suffer from poor and non-nutritious soil, which lacks the necessary amount of magnesium, potassium, iron and manganese. The first to respond to these problems are cucumber leaves. The situation can be corrected by making certain dressings.


The leaves of tomato seedlings turn pale, wither and fall. Why is this happening and how can we help the plants?

Good day, dear!
I have started the second gardening season, and again I cannot do without advice. Tomatoes this time. After the pick, many began to turn yellow: first, the veins of the lower leaves, then the general pallor of the bush appeared. The vertex is normal, but not dark either.
I illuminate this year with Led-lamps, warm (4000k) and cold (6500k) light. An experiment like this))).

Here is a general top view. It can be seen that some of the bushes are normal, dark. Others are just pale. Still others are also sluggish.


Seedling

This is not the same variety, but different hybrids and varieties, I did not notice any pattern.

I fed it once, with a complex fertilizer for seedlings, I could not find more in the conditions of "quarantine", a lot of shops are closed, the assortment is not important. I fed eggplants and peppers at the same time, they look great. And today I found two bushes in the same condition as in the photo in the middle. Here, for comparison, eggplant and another average bush.


Comparison

The eggplant, as you can see, looks normal, and the second tomato is nothing, only pale, and now I see that the leaves are also starting to wither.

At the same time, there are absolutely normal bushes, such as the Grinch cherry DWARF tomato variety. By the way, it is my Grinch that is beautiful, dark green and with excellent roots, all 4 bushes.

Moreover, everything is the same: water, earth, light, top dressing. It all started just after the pick, and mainly at the seedlings planted in tall "beer" glasses. My guess is that the lamps heat up, and this heat gives rise to such a reaction. Plus, I may have poured some of them. At the same time, the roots of most are good, white, powerful, without foreign odors.


Tomato1


Tomato 2

It can be seen that the yellowing goes from the trunk to the tip.
Seedlings are exactly 30 days old.

From what I googled, it could be anything from overflow to lack of nutrition, but suddenly wilted bushes were very embarrassing. Moreover, they did not dry out, but faded. At the same time, they did not stand under the lamp. Sometimes the lower leaves fall off some tomatoes. Do not fade, do not dry, but just once and that's it. But this is not for everyone, I don’t know if it’s connected. Children do not admit whether they poured something into a glass on the sly or not.

I specially wrote all the conditions so that the picture was as complete as possible. Going into Google with all this is like making a diagnosis online.

What do you think? The patient, ugh, will the seedlings live, or throw everything out and reseed before it's too late? Suddenly it’s still a disease, but I don’t know ...


Root damage or other root problems

A common cause of yellow leaves on tomato plants is a root problem. Most often, the leaves turn yellow on plants with a weak root system, which simply cannot provide the aboveground mass with adequate nutrition, starvation occurs and the leaves turn yellow. Such plants can be helped by treating them with growth stimulants: "Epin", "Heteroauxin", "Larixin", "Novosil" and the like.

Problems with the root system of tomatoes arise for a number of reasons:

  • roots can be damaged by pests
  • roots can be damaged when transplanting seedlings from separate containers into the ground
  • when loosening the soil too deeply (when controlling weeds)
  • poor-quality original seedlings (another reason for weak roots), which can be fattening, elongated, and also grown with significant savings in area, which does not allow the full development of the root system.

It can be difficult to help the tomato root system recover, it is better to just wait, providing the plants with sufficient nutrition and moisture during this period.

Poor-quality tomato seedlings usually get sick for a long time after transplanting, and its leaves can turn yellow not only immediately after transplanting seedlings, which is quite normal, but also after a long time. Such seedlings are usually well helped by the drug "Kornevin".

Do not forget that you can restore the balance of the most important elements in the plant by foliar feeding. It is best to use a nitroammophoska containing all the essential elements. It should be dissolved in a teaspoon of it in a bucket of water and every 3-4 days in the evening to carry out plant treatments until the new yellow leaves stop appearing. In this case, already yellowed leaves can be removed.


Why do the leaves of tomatoes turn yellow in a greenhouse

Tomatoes in a greenhouse are undoubtedly more protected from external influences, here they are not afraid of night frosts, heavy showers or unbearable heat. The gardener's task is to maintain an optimal microclimate inside his greenhouse.

Tomatoes love this "weather":

  • air temperature within 23-30 degrees
  • constant humidity at the level of 60-70%
  • regular watering
  • enough sunlight, but not scorching midday heat.

In order for tomato seedlings to feel comfortable in greenhouse conditions, they need to provide all of the above conditions. And besides, constantly monitor the condition of the plants and identify problems at an early stage.

Yellowness on the foliage of tomatoes can appear due to a number of reasons, such as:

  1. Violation of the temperature and humidity conditions in the greenhouse.
  2. Improper watering.
  3. Damage to the root system.
  4. Violation of the balance of trace elements in the soil.
  5. Viral or fungal infections.

In each of these cases, the leaves of tomatoes turn yellow, but this manifests itself in different ways. The methods of "treatment" are also different.

Violation of the microclimate inside the greenhouse

When equipping a greenhouse on his site, the gardener must remember some rules:

  • It is better to build a greenhouse not in a place open on all sides, but to choose a site that will be shaded by trees or outbuildings at lunchtime. If the sun constantly shines on the greenhouse with tomatoes, it will not be possible to keep the temperature inside it at around 30 degrees - the thermometer reading can exceed 45 degrees. In such conditions, the tomatoes will turn yellow, dry out, shed the ovaries and flowers.
  • The soil in the greenhouse must be changed regularly, it is better to do this before the start of each season. It is in the soil that the larvae of insect pests lurk; pathogens or fungal spores can be found for several years. If you cannot change all the land from the greenhouse, you can disinfect it a couple of days before planting the seedlings by pouring boiling water or a solution of potassium permanganate.
  • Every spring, the greenhouse must be disinfected, this also applies to walls and wooden pallets. It is also necessary to treat garden tools with antiseptics.
  • For planting, you should choose only tomato seeds collected from healthy plants. In any case, it is better to hold the seeds before planting in a weak solution of potassium permanganate.
  • To reduce humidity, it is necessary to open the windows and doors of the greenhouse - thanks to the ventilation, excess moisture will quickly evaporate from the walls of the greenhouse and from the ground.
  • If there is not enough moisture in the greenhouse and the air is too dry, tomato leaves may also turn yellow. In this case, you can place small open containers with water inside or use a humidifier.
  • The temperature in the greenhouse is still highly dependent on the outside climate. Thermometer readings can only be fully monitored in a heated greenhouse. In other cases, it is necessary to regulate the microclimate by airing, opening doors, humidifying the air.

Damage to the roots of a tomato

The root system of tomatoes is well developed, the central root of tomatoes can go underground to a depth of 150 cm, so many varieties tolerate drought and irregular watering well. But most of the side roots are still only 15-20 cm from the ground, so tomatoes need regular watering.

The healthy appearance of tomatoes directly depends on the integrity and condition of the root system, because the roots are an organ that supplies plants with water and nutrients. If the leaves of tomatoes turn yellow and dry out, this may indicate problems with the root system.

Tomato roots can be damaged in several cases:

  • growing seedlings in too cramped cups or boxes. In this case, the roots of the tomato curl into a tight ball, it is very difficult to straighten and untangle them, so the roots are severely damaged when transplanted into a greenhouse. As a result, the adaptation of tomatoes in a new place worsens, their leaves begin to dry and turn yellow.
  • The same effect can be obtained if you overexpose tomato seedlings in the house - the root system will become too developed, it will be difficult for plants to adapt to a new place, it will begin to turn yellow and lose foliage.
  • Insect pests can also spoil the roots. The most dangerous for tomatoes are the bear and wireworm. If the gardener noticed yellowing of tomato seedlings after transplanting into a greenhouse, you need to treat the land with suitable insecticides.

Watering schedule

The appearance of yellowed leaves on tomatoes may indicate a lack of moisture in the soil, and its excess. How to figure out: a lot of water for tomatoes or not enough? It is very simple to do this - you need to carefully examine the ground and the plants themselves.

If tomatoes are deficient in moisture, the picture will be like this:

  • the ground around the tomatoes is dry and cracked
  • tomato stems sluggish with low turgor
  • leaves are lifeless, hang like rags
  • all leaves on the bushes can turn yellow at once.

Seeing such a situation on their site, gardeners often rush to help the tomatoes and fill them with plenty of water. This should not be done, especially if the tomatoes are in the stage of fruit ripening. Due to the large amount of moisture, tomatoes will crack - the crop will be spoiled.

Tomato leaves turn yellow when they do not have enough water. But in this case:

  • the ground does not look dry, on the contrary, it can become silted or covered with moss
  • tomato stems are elastic, break easily
  • the plants show signs of fungal infections.

You can prevent problems with yellowed leaves if you water the tomato seedlings correctly:

  1. Only in the morning or in the evening. Sunburn through water droplets also manifests itself as yellowing of the leaves.
  2. Use settled warm water.
  3. Avoid getting water on the leaves and stems of the tomato, so as not to provoke fungal infections.
  4. Pour water only at the root or install a drip irrigation system in the greenhouse.
  5. Watering tomatoes is rare, but abundant. Ideal watering schedule for tomatoes: twice a week.

Power problems

Both a deficiency and an excess of trace elements in the soil can cause yellowing of tomato leaves. Therefore, it is very important to follow the fertilization schedule and constantly monitor the condition of the seedlings.

You can find out the balance of which substance is disturbed by the appearance of the tomato leaves:

  1. In the greenhouse, the leaves turn yellow only in the lower part of the bush, the young leaves are green and look quite healthy, the plant itself is sluggish, undersized with small leaves, without flowers and ovaries - the tomatoes lack nitrogen. Nitrophoska or other complexes containing nitrogen will help to correct the situation. You can also fertilize tomatoes with slurry (1:10 with water), mullein. A distinctive feature of the leaves during nitrogen starvation is that green veins are preserved.
  2. You can find out about the lack of potassium by the small light dots that appear on all the leaves of the tomato bush. Over time, these spots grow until they merge into a large light spot. It is easy to help the plants: fertilize the soil with potassium-containing preparations.
  3. The fact that tomatoes lack manganese will be indicated by the yellowing of the upper young leaves, which is gradually going down. Brown spots can appear against the background of excessive liming of the soil, as a result of which the amount of manganese is significantly reduced. A solution of slurry and wood ash or fresh mullein can help tomatoes.
  4. If there is not enough sulfur in the ground, the tomato leaves not only turn yellow, but also become denser.
  5. Copper deficiency manifests itself in the yellowing of only the lower old leaves.
  6. When tomatoes lack phosphorus, the tops of their leaves turn yellow and die off quickly. If the top of the leaf is dry, you need to feed the tomatoes with superphosphate.

Diseases and infections

Probably the most dangerous thing for tomatoes is infections, which are also quite often manifested by yellowing of the leaves. However, this is not the worst - the disease does not stop on the leaves, it destroys the entire plant: from the top to the roots.

Today, several dozen infections are known from which tomatoes can suffer. The most common and dangerous of them are fusarium and late blight, the first sign of which is the leaves that have turned yellow.

Fusarium, for example, appears suddenly and is manifested by a violation of the color and elasticity of tomato leaves. Spores of this fungal infection can be stored for several years in the soil, on tomato seeds, in garden tools or in the structures of the greenhouse itself.

It is very difficult to fight fusarium wilting, often this disease destroys the entire tomato crop in a matter of days. If the first signs of fusarium are noticed, it is necessary to treat the bushes with "Trichodermin" or "Previkur".

Both young bushes and already adult plants with ripening fruits can get sick. At first, the fungus damages the roots, which is why yellowing of the foliage can be observed. Then the disease spreads along the stem, gets into the fruits and ovaries - the whole bush eventually dies.

Fusarium wilting can be prevented by disinfecting the soil in the greenhouse, all structures, tools, and treating the seeds before sowing for seedlings.

Late blight is no less dangerous and is very well known among gardeners. Its appearance is also facilitated by a violation of the microclimate, high humidity, heat, or, conversely, too low air temperature.

If in most cases the lower leaves of a tomato turn yellow, then when tomatoes are infected with late blight tops of the shoots and ovaries, they first of all acquire a brown tint and begin to dry out.

Drip irrigation and preventive treatment of plants with antifungal drugs will help prevent infection of tomatoes with late blight. When the bushes are already sick, you can treat them with Bordeaux mixture, but the treatment will have to be repeated regularly until harvest.


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