Why do tomato leaves curl in a greenhouse. Tomato leaves curl and curl Tomatoes at the top of the thin leaves twist
By all indications, tomato plants in a greenhouse "fatten" from excess nitrogen fertilizers in the soil. Tomatoes in this case expel a large green mass, but do not seek to give offspring, since they do not feel danger to their lives. That is, they form very weak flower brushes with a small number of flowers. In this case, fertilizing with mineral fertilizers, which include phosphorus, potassium, zinc, boron and other trace elements, will help to balance the nutrition of tomatoes and correct the situation. Superphosphate (3 tablespoons) is ideal for this. Dissolve spoons in 10 liters of water and feed 1 liter per bush.) But it is best to use wood ash infusion as a top dressing, it contains all the nutrients except nitrogen. Twisting of the apical leaves can also occur for other reasons:
- From the high temperature in the greenhouse (more than + 35 ° C). In this case, the apical leaves curl up by lunchtime, and by night or in the morning the leaf blades are restored. It is necessary to ventilate the greenhouse more often and shade the roof nonwovens(span-bond, lutrasil, agril and others). From a large difference in night and day temperatures. In this case, greenhouses are closed at night, and opened for good ventilation during the day. From frequent, but shallow watering of plants. It is better to water tomatoes less often, but more abundantly. From belated removal a large number overgrown stepchildren and abundant cutting of leaves, as the balance between the ground part of the plant and the roots is disturbed. It is necessary to stepchild when stepchildren have a length of no more than 5-7 cm. It is permissible to cut 2-3 leaves on a plant per week. From damage by viruses or pests. A plant affected by a virus cannot be cured. The fruits from such plants can be used as food, but the seeds cannot be collected. Aphids and whiteflies can deform young leaves. In this case, immediately treat the plants with one of the insecticides (Agrolan, Actellik, etc.).
Preparation of ash top dressing Pour 2 liters of wood ash hot water and mix thoroughly. Bring the solution with water to 10 liters and leave for a day so that all the elements are completely dissolved. To obtain a liquid top dressing, take 1 liter of infusion, dilute it in 9 liters of water heated in the sun, and add 1 liter under the root of each plant.
Below are other entries on the topic "Cottage and garden - with your own hands"
Tomato leaves curl
Sometimes you can observe the following picture: the leaves of tomatoes begin to curl along the central vein. Why does this happen? Tomato leaves can curl with an excess of fertilizer in the soil. As a result, the leaf becomes similar to a ram's horn.
Why do tomato leaves curl? Most often this happens in the first weeks after planting tomato seedlings, when the plants take root. Gradually, during the growth of plants, and especially towards the beginning of the filling of fruits, the leaves straighten.
Therefore, this twisting does not pose any danger to tomatoes. If the twisting of the leaf is complemented by a thickening of the stem and the development of powerful stepchildren, this is a sign of excess nitrogen. Excess nitrogen harms fruit formation.
To reduce the amount of nitrogen, it is enough to water the plants abundantly once to rinse upper layer soil. At the same time, it is important that the water can leave the site, and not stagnate near the plants.
Otherwise, your tomatoes will suffer not only from excess nitrogen, but also from excess moisture. It will help to restore balance and the introduction of ash. Ash is rich in phosphorus, potassium and trace elements.
You should also know that fresh manure is categorically contraindicated for tomatoes, since it promotes strong growth of plant leaves and thickens the stem, causing damage to fruit formation. It is better to underfeed tomatoes with fertilizer than to overfeed them. If your tomatoes are fattening, then you can help them shed some excess.
Do not rush with the first stepson. Let the side shoots grow up to 10-12 cm long, and only then remove them. The second reason for twisting the leaves of tomatoes is a lack of water. In this case, the tomato leaves are twisted along the entire axis, forming a boat.
In such a situation, the plants will have to recover for a long time - about two weeks. Try to prevent this: water the plants in a timely manner, ventilate, shade if necessary. However, a viral infection may well be the cause of the second type of twisting.
To protect plants from all kinds of infections (and there are a lot of them in tomatoes), proper plant care will help you: timely watering, optimum temperature, light and food. If you see that the tomato bush is completely withered, its leaves are twisted into strings, the flowers do not become fruits, or the plant has ugly woody fruits, remove such plants. And in no case, after contact with a diseased plant, do not touch healthy ones!
Tomato leaves are curled in a greenhouse
If such a problem appeared in adult tomatoes, there is a slowdown in plant growth, then it is worth checking the temperature in the greenhouse and remembering the necessary temperature regime growing tomatoes. As you can see, there are many answers to the question “why the leaves of tomatoes curl” - it is necessary to analyze several factors that affect the development of plants, and only then draw conclusions.
Curled tomato leaves under the film
If you just planted your tomatoes in the garden and carefully covered them with a film on top to protect them from the cold, then in this case the leaves may begin to curl due to elemental heat - do not forget to ventilate young tomatoes, providing them comfortable conditions for further growth. In addition, be sure to watch for timely watering - this is very important for established plants, and a lack of water can also lead to leaf curl. At the same time, do not forget that an excess of water also does not bring benefits and leads to sad consequences. It is interesting:
Varietal feature
There are quite a lot of varieties of tomatoes, especially tall (indeterminate), with thin stems and leaves, strongly cut and hanging or slightly twisting downwards. This is not a disease - you just need to know that such popular varieties like Fatima, Japanese Crab, Oxheart, Honey Drop, and a good half of cherry tomatoes. When planting seedlings, pay attention to the condition of the leaves - if they are equally thin and slightly wrapped in all the bushes - you should not worry about why the leaves are curled.
high air temperature
Leaf curl in tomatoes is often observed in hot summer weather, especially when dry winds blow. Thus, the plant tries to reduce the area of evaporation of such valuable moisture.
Usually in the evening, at dusk, the leaf unfolds and returns to its normal shape in order to receive more dew at night and restore balance. There is only one way to help the plant - to shade.
For this purpose, both in open beds and in a greenhouse, white spunbond or lutrasil, thrown over plants at noon, is excellent. But we categorically do not recommend watering tomatoes by sprinkling.
If you do it in the sun - from water drops that work like miniature lenses, the leaf gets burned, and if you refresh it in the morning or evening - this is a direct path to late blight. We also recommend that you mulch the soil in the beds and in the greenhouse. 8-10 cm of cut grass, forest floor will significantly cool the roots in the very heat and the plant will be much more comfortable.
lack of moisture
This is the most common reason why tomato leaves curl. Many vegetable growers either do not pay attention to watering at all, hoping for rain, or they do it incorrectly - they water often, but in small portions.
But only the top layer of soil is wetted this way - 3-5 cm, and the roots are mostly located deeper, and the tomato suffers from a lack of moisture. Proper watering is enough to do once every 2-3 days on uncovered beds and once every 5-7 days on mulched ones, but at the same time, a bucket of water must be poured onto a fruit-bearing bush. This should not be done at the same time, but divided into several portions so that the water does not spread around the sides, but all gets to the roots.
Too much moisture
An overabundance, like a lack, can be the reason why the leaves of tomatoes curl, but only their edges are wrapped up. During heavy rains in clay soils the water slowly sinks to the depth, and the roots of tomatoes literally suffocate from lack of air.
You can avoid this problem even during the transplanting period by filling the hole with loose soil. And during the growing season, make small grooves from the bushes to the side to divert water from the roots.
Pests: aphids, whiteflies, red spider mites
These garden pests rarely, but still, tomatoes are affected, especially when the beds are large, and also, in a greenhouse. They settle on the underside of the leaves and actively suck out the juices, as a result of which the leaves curl inward, turn yellow, necrotic spots and nodules appear. Finding pests, it is urgent to save the plant.
If there are few insects, try folk methods- infusion of ashes, celandine, onion peel.
If it doesn’t help, one of the modern drugs, for example, Bankol, Akarin, Karbofos (Fufpnon), Aktellik. Systemic preparations such as Aktara, Tanrek, Biotlin cannot be used for plants where tomatoes have already started, since toxic substances can accumulate in fruits within 2-4 weeks.
Nutrient deficiency
This happens often if, for some reason, the bushes are not fed at least once every two weeks. Especially often this happens in greenhouses, where the air is very warm, but the soil is not. The plant does not have the ability to accumulate trace elements in sufficient quantities. At the same time, the twisting of the leaves in tomatoes is accompanied by a change in color, and the central vein becomes rough and convex:
- with a lack of phosphorus, they become red-violet, especially on the underside and veins, and the upper part seems to turn gray; with a lack of zinc, the leaf bends down, the tops of the shoots also curl and become rough and brittle; twisting of young leaves and their lightening indicates a lack of boron; crushing the shoots, wrapping the leaves into a tube is a sign of a deficiency of copper and sulfur; with a lack of calcium, the edges of the leaves twist up, and they become pale in color, the veins turn white, necrosis begins; with iron deficiency, the foxes turn yellow, thinner and sag.
Correct the situation can be properly selected top dressing. If you determine exactly which trace element is missing and why, then universal way- spray with a solution of immunomodulators: in hot weather - with Zircon; in cool and rainy - Epin; between them - apply Mortar (2 tablespoons per bucket of water) for general top dressing.
thin leaf virus
As a rule, it develops only with prolonged drought and an excess of illumination in the greenhouse. In this case, the plants do not die, but the yield is very weak, the fruits are small, wrinkled, with a hard middle. You can try to save them in this way: at intervals of 2-3 days, successively spray the leaf with a solution of urea and pale pink potassium permanganate, and shade with synthetic material from excess sun.
If this does not help, then it is better to remove the plant from the garden and burn it so that the virus does not spread.
Tomato bacteriosis
Sick tomatoes do not grow well, they have shortened shoots, small and ugly flowers, and the leaves curl, as a rule, only adult plants. Juveniles simply grow thin and heavily feathery.
The disease is transmitted by seed, with diseased plants infecting the soil. It is almost impossible to cure such tomatoes - just remove and then disinfect the soil with a solution of potassium permanganate and then sow mustard as green manure - its phytoncides kill pathogens, and the green mass after overheating will become an excellent source of humus.
Wrong stepson
- If, after sprinkling, the leaves of tomatoes are wrapped in a funnel, it means that you overdid it with this manipulation. Firstly, you missed optimal time when the stepchildren reached 5-7 cm in length. Secondly, too many vegetative parts were removed at the same time. Twisting tomato leaves in such a situation is a reaction to stress. Usually at the same time, flowers are massively showered. The way out is just to make a foliar top dressing, and in a week the plant will recover. True, part of the crop will be lost.
Too much organic fertilizer
Too little is bad, too much is even worse. Excessive application of manure (especially fresh), watering slurry undiluted to the desired concentration or herbal infusions leads to the fact that the plant can no longer absorb so many nutrients and twists the leaf to reduce photosynthesis. And, in addition, evaporation and ammonia released from fermentation of organic substances lead to burns, from which the leaves curl up and die.
Why do tomato leaves curl and how to avoid it?
Editor:
Tomato is a rather demanding and whimsical plant. From improper care leaves may change color or curl into a tube. Because of such changes, many gardeners are concerned about the question of why the leaves of the tomato curl.
It is known that this is how tomatoes react to temperature changes and changes in the irrigation regime. Do tomato leaves curl? This phenomenon can be explained.
There are a number of reasons for leaf deformation. Why do tomato seedlings curl leaves Regardless of whether the leaves of the seedlings or the adult plant curled, the reasons should be sought in the following:
- The tomatoes are very hot. High temperatures during the day adversely affect the development of seedlings. Young and adult plants need ventilation. Especially if the tomatoes are grown in a polycarbonate greenhouse. Temperatures above 35 degrees cause the plants to react. That is why the tomato leaves curl in a boat during the day, and at night and in the morning the foliage straightens to its usual position. If it is not possible to periodically ventilate the greenhouse, then you need to build gauze curtains to shade the seedlings a little. proper watering. It is known that tomatoes need to be watered abundantly. But frequent watering hurts no less than meager. Taking moisture from the upper layers of the soil, tomatoes do not develop lower roots. A lot of lateral ground roots are formed that are not able to feed the plant. Tomatoes are watered abundantly, but not more than twice a week in hot weather. Many gardeners try to get rid of extra stepchildren and lower leaves in one or two doses. Pinching should be carried out gradually, and the leaves should be cut as the ovaries form. Deciding to thin out the foliage in one go may result in curled leaves the next day. Overfeeding. Without mineral fertilizers it is very difficult to get an excellent harvest. But even increased fertilizing can cause leaf curvature. The fact is that nitrogen fertilizers lead to a lack of phosphorus, zinc and potassium. This is why the leaves of the tomato curl up - due to an imbalance in nutrients. The introduction of potassium-phosphorus fertilizers should stabilize the situation, and the leaves will straighten.
What other causes of leaf curl could be? If the care is carried out correctly, and the leaves still do not look healthy, it is worth carefully examining the leaves from above and below.
Often the reason why the leaves of a tomato curl are pests and diseases. If you find aphids or whiteflies, then treatment with special chemicals will help.
Tools such as "Fufanon", "Tantrek" or "Biotlin" effectively fight tomato pests. But defeating an infection caused by a viral pathogenic environment is quite difficult. The only way out is to remove the sick lower leaves and do not leave fruit to seed.
But in this case, do not despair. You can stop the development of the disease and get a decent harvest by using preparations for late blight. For example, the Aviksil remedy will stop the development of the infection and allow the tomatoes to survive.
If you just planted tomatoes, then after a while you may notice that the leaves of the tomato seedlings are twisting and the buds are spoiling. Remember that tomatoes are rather capricious plants that require particularly strict adherence to the rules for their maintenance.
Even with a minimal discrepancy with these rules, the fruits and leaves will signal you about their deplorable state. Today, the question of why the leaves of a tomato are twisted worries many gardeners. But, as it turned out, there are more than enough reasons for this.
The most important of them is an excessive passion for nitrogen fertilizers, infusion of herbs and organic matter with a sharp lack of zinc, potassium and phosphorus. In this case, it is important to apply complex fertilizers, such as potassium monophosphate or solute, and also to balance the nutrition of the plants according to the rules. In addition, when you apply a lot of insufficiently decomposed slurry or manure, the released ammonia can cause superficial necrotic damage to the fruit or leaf scorch. Also the reason why the leaves of the tomato curl up may be a violation of the humidity and temperature regime.
Increasing the temperature to 35 ° C intensifies the breathing process of the tomato, resulting in a rapid breakdown of nutrients, although the accumulation and assimilation of these substances at the same time drops sharply. Due to starvation, the leaves of the tomato are twisted.
A particular danger to the plant occurs if the roots are located in the cold, and the upper part is under high-temperature stress. You can relieve stress by treating tomato leaves with urea, and after about 2 days, sprinkle the leaves with potassium permanganate, which must be diluted to the color of wild rosemary and treat the leaves with a solution . After a few days, you will notice that the tops straighten out. Intensive watering, excessive pinching or pinching can also be the reason why the leaves curl on the tomato.
Such curling may appear in the middle of the growing season. It usually begins with the lower leaves and gradually spreads to the top. The leaves crumble easily, become dense and somewhat hard to the touch.
With strong twisting, plant flowers often fall off. If you are sure that the plants are provided with the correct humidity and temperature conditions and proper nutrition, but you don’t understand why the leaves of the tomato are twisted, then maybe the cause was a bacterial infection that is transmitted when planted with seeds. We want to assure you that it will not be possible to cure this disease, but it can be stopped a little with a special systemic drug"Avixil". The last piece of advice: in order to avoid unpleasant situations in growing tomatoes, from the beginning of the season we recommend that you strictly observe agricultural practices, properly prepare seeds before sowing, use complex fertilizers with microelements for top dressing, and take preventive measures in the first half of summer to combat the most common diseases and pests. Only in this case, tomatoes will delight you with a healthy and good harvest!
Home > Home and family > Dacha and country house > Plants > Tomato
Tomato leaves curl and curl
Today, this question worries many gardeners. There are many reasons for this. And one of them is an excessive passion for organic matter, herbal infusion, nitrogen fertilizers with a sharp lack of phosphorus, potassium and zinc. In this case, it is necessary to properly balance the nutrition, apply either complex fertilizers such as solute (2 tablespoons per 10 liters of water), or potassium monophosphate (1 teaspoon per 10 liters of water).
In addition, when a large amount of insufficiently decomposed manure or slurry is introduced, the released ammonia can cause leaf burns or superficial necrotic damage to fruits.
Excessive pinching or pinching, intensive watering also causes non-infectious twisting of tomato leaves. It usually appears in the second half of the growing season. It starts from the lower leaves, gradually spreading to the tops of the plant. The leaf blades curl in a funnel-shaped fashion towards the upper surface along the central vein. The leaves become dense, hard to the touch and crumble easily. With strong twisting, the flowers of such plants usually fall off.
At high temperatures in greenhouses (above 35 degrees and more), twisting of the tops of tomatoes is also observed, as they experience high-temperature stress. And in hot weather, it is necessary to increase ventilation, arrange drafts, shade with lutrasil. You can relieve stress by treating tomatoes with urea on the leaves (1.5 tablespoons per 10 liters of water), and after 1-2 days - with potassium permanganate of rosemary color, also on the leaves. After a few days, the tops straighten out.
If you think that the plants are provided with proper nutrition, temperature and humidity conditions, but the leaves are curled, then the reason is related to bacterial infection, which is transmitted with seeds. It is impossible to cure this disease, but it is possible to suspend it with the systemic drug avixil. But learn how to properly treat the seeds before sowing. If you collect them yourself, then only from healthy plants.
First aid to tomatoes in the greenhouse
If the leaves of the tomatoes in the greenhouse are twisted, the yield from such plants will be lower. Twisted leaves will not be able to capture as much sunlight as healthy ones, respectively, they will produce less plastic substances that go to plant growth, including the formation of fruits.
Leaf curl- is not infectious disease, according to some gardeners. This disease is associated with unfavorable conditions for plant growth. And what exactly, we will consider in more detail.
The leaf lobes roll up into tubules along the stem of the central vein. This is due to the fact that during the day in the greenhouse too heat air and low humidity. This can be avoided by lowering the air temperature during the day by ventilation and by increasing the humidity by spraying moisture into the air. And also choosing varieties that do not react so strongly to such conditions.
The upper leaves are twisted into a ring, the stem is strongly thickened, the leaves are juicy, fragile. There is a phenomenon about which they say this: plants "fatten". Obviously, too much fresh manure was added to the soil during planting, and top dressing was predominantly nitrogen. For the future, it should be taken into account that only well-rotted manure or compost is brought under tomatoes (unlike cucumbers), top dressing from the moment the fruits are set should be complex, in August - only phosphorus-potassium fertilizers.
The leaf lobes are turned down, and the leaves are moving away from the shoots under acute angle. Leaves signal that the plant lacks phosphorus. Tomatoes are the most demanding (among vegetable) plants for phosphorus nutrition. And they need it from the moment the seeds germinate until the fruits ripen. Up to 94% of the phosphorus absorbed by plants goes to the formation of fruits. That is why superphosphate for tomatoes is already added when picking into cups under the roots of each plant. Then, when planting seedlings in holes, 1 tbsp. spoon, in the future - in top dressing.
The edges of the leaves curl up, this process goes from the edges to the middle of the lobes, young leaves are curly, the fruits ripen unevenly. On the colored fruits, in addition, greenish or lighter spots in relation to the main color can be observed. All this indicates a lack of potassium. An urgent potassium supplement is needed.
The edges of the leaves are wrapped up and with copper starvation (although it is less common and is observed more often in peat bogs). With copper starvation, plants bloom poorly or do not bloom at all. Top dressing with microelements, which contain copper, will help to correct the situation, or copper sulfate is added to the feeding solutions. And even better if you promptly feed the plants on the leaves.
N. S. Akishin, agronomist
Updated on 18.06.2009 11:14
Astrakhan tomatoes ripen remarkably lying on the ground, but you should not repeat this experience in the Moscow region. Our tomatoes need support, support, a garter. My neighbors use all sorts of pegs, garters, loops, ready-made plant supports, and mesh fences. Each method of fixing the plant in an upright position has its own advantages and " side effects". I'll tell you how I place tomato bushes on trellises, and what comes of it.
Flies are a sign of unsanitary conditions and carriers of infectious diseases that are dangerous for both humans and animals. People are constantly looking for ways to get rid of nasty insects. In this article, we will talk about the Zlobny TED brand, which specializes in fly protection products and knows a lot about them. The manufacturer has developed a specialized line of drugs to get rid of flying insects anywhere quickly, safely and without extra costs.
summer months- flowering time of hydrangeas. This beautiful deciduous shrub is luxuriously fragrant with flowers from June to September. Florists willingly use large inflorescences for wedding decors and bouquets. To admire the beauty of a flowering hydrangea bush in your garden, you should take care of the proper conditions for it. Unfortunately, some hydrangeas do not bloom year after year, despite the care and efforts of gardeners. Why this happens, we will tell in the article.
Every summer resident knows that plants need nitrogen, phosphorus and potassium for full development. These are the three main macronutrients, the deficiency of which significantly affects the appearance and yield of plants, and in advanced cases can lead to their death. But at the same time, not everyone understands the importance of other macro- and microelements for plant health. And they are important not only in themselves, but also for the effective absorption of the same nitrogen, phosphorus and potassium.
Garden strawberries, or strawberries, as we used to call them, are one of the early fragrant berries that summer generously endows us with. How we rejoice in this harvest! In order for the "berry boom" to repeat every year, we need to take care of the care of the berry bushes in the summer (after the end of fruiting). The laying of flower buds, from which ovaries will form in spring, and berries in summer, begins approximately 30 days after the end of fruiting.
Spicy pickled watermelon is a savory snack for fatty meat. Watermelons and watermelon rinds have been pickled since time immemorial, but the process is laborious and time consuming. According to my recipe, it’s easy to cook pickled watermelon in 10 minutes, and a spicy snack will be ready by the evening. The watermelon marinated with spices and chili is stored in the refrigerator for several days. Be sure to keep the jar in the refrigerator, not only for the sake of preservation - chilled, this snack is just licking your fingers!
Among the variety of species and hybrids of philodendrons, there are many plants, both gigantic and compact. But not a single species competes in unpretentiousness with the main modest - blushing philodendron. True, his modesty does not concern the appearance of the plant. Reddening stems and cuttings, huge leaves, long shoots, forming, although very large, but also strikingly elegant silhouette, look very elegant. Philodendron blushing requires only one thing - at least minimal care.
Thick Chickpea Soup with Vegetables and Egg is an easy recipe for a hearty first course inspired by Oriental cuisine. Similar thick soups are prepared in India, Morocco, and the countries of Southeast Asia. The tone is set by spices and seasonings - garlic, chili, ginger and a bouquet of spicy spices, which can be assembled to your liking. It is better to fry vegetables and spices in melted butter (ghee) or mix olive oil and butter, it's certainly not the same, but similar in taste.
Plum - well, who does not know her ?! She is loved by many gardeners. And all because it has an impressive list of varieties, it surprises excellent harvests, pleases with its variety in terms of ripening and a huge selection of color, shape and taste of fruits. Yes, somewhere she feels better, somewhere worse, but almost no summer resident refuses to grow her on her plot. Today it can be found not only in the south, in middle lane, but also in the Urals, in Siberia.
Many decorative and fruit crops, except for drought-resistant ones, suffer from the scorching sun, and conifers in the winter-spring period - from sunlight, enhanced by reflection from snow. In this article we will talk about a unique preparation for protecting plants from sunburn and droughts - Sunshet Agrosuccess. The problem is relevant for most regions of Russia. February and early March Sun rays become more active, and the plants are not yet ready for new conditions.
“Each vegetable has its own time”, and each plant has its own optimal time for planting. Anyone who has experienced planting is well aware that the hot season for planting is spring and autumn. This is due to several factors: in spring, the plants have not yet started to grow rapidly, there is no sweltering heat, and precipitation often falls. However, no matter how hard we try, circumstances often develop in such a way that landings have to be carried out at the very height of summer.
Chili con carne in Spanish means chili with meat. This is a Texan and Mexican dish whose main ingredients are chili peppers and minced beef. In addition to the main products, there are onions, carrots, tomatoes, and beans. This red lentil chili recipe is delicious! The dish is fiery, burning, very satisfying and amazingly tasty! You can cook a large pot, arrange in containers and freeze - a whole week will be a delicious dinner.
Cucumber is one of my favorites horticultural crops our gardeners. However, not all and not always gardeners manage to get really good harvest. And although growing cucumbers requires regular attention and care, there are little secret, which will significantly increase their productivity. It's about pinching cucumbers. Why, how and when to pinch cucumbers, we will tell in the article. An important point The agricultural technique of cucumbers is their formation, or type of growth.
Now every gardener has the opportunity to grow absolutely environmentally friendly, healthy fruits and vegetables in own garden. The microbiological fertilizer Atlant will help in this. It contains helper bacteria that settle in the zone of the root system and begin to work for the benefit of the plant, allowing it to actively grow, stay healthy and give high yields. Usually, many microorganisms coexist around the root system of plants.
Summer is associated with beautiful flowers. Both in the garden and in the rooms you want to admire the luxurious inflorescences and touching flowers. And for this it is not at all necessary to use cut bouquets. In the range of the best indoor plants many beautiful flowering species. They are in the summer when they get the most bright lighting and the optimal duration of daylight hours, can outshine any bouquet. Short-lived or just annual crops look like living bouquets.
Most common problem faced by both beginners and experienced gardeners when growing tomatoes in garden beds and in greenhouses, it is that the leaves of the tomatoes curl up. This phenomenon can be observed on individual plants or cover entire plantations. There are several reasons why tomato leaves curl. Let's figure out if the leaves of tomatoes curl up what to do.
Watering and humidity
First of all, twisting the leaves of a tomato provokes a violation of the irrigation regime. With a lack of moisture in the soil, the leaves of plants are twisted in a boat along their axis. Therefore, if you are wondering why the leaves of a tomato are curled up in a boat, then this is due to a lack of moisture in the soil. The same sign is also observed during surface irrigation, when only a few centimeters of soil are wetted, and the entire root layer remains dry.
Excessive watering of tomatoes leads to rotting of the suction roots and twisting the leaves of the tomato down.
Tomato leaves curl what to do:
It is enough just to adjust the watering to prevent the occurrence of unpleasant symptoms. According to the recommendations of agrotechnicians, tomatoes are watered no more than once every 5 days, spending from 1 to 2 buckets of water, the temperature of which should not be lower than 22 ° C, for each square meter. In cloudy summers and during rainy periods, open tomato beds are watered even less often (once every 7-10 days).
Another common reason why tomato leaves curl inward is a violation of the humidity regime in closed structures. In hot weather, when the temperature in greenhouses rises above 32°C, there is an intensive breakdown of nutrients in the aerial parts of plants, and their accumulation slows down significantly. The solution is frequent cross-ventilation during the day and ventilation during especially hot periods and the organization of drip irrigation.
Root system damage
Most often, the roots of tomatoes are damaged during transplantation. Overgrown plants are especially susceptible to this scourge. The leaf plates of the bushes are twisted the next day after planting the seedlings on permanent place and remain in this form until complete adaptation plant organism to new living conditions.
excess nitrogen
When leaf curling is accompanied by a significant thickening of the stem in tomato bushes, this is a sure sign of an excess of nitrogen substances in the soil. What to do in this case? The way out of this situation is quite simple - spill the beds with plenty of water or add an ash solution. Phosphorus-potassium in this case neutralizes excess nitrogen.
Deficiency of phosphorus, potassium and trace elements
Why do tomato leaves curl into a tube? The leaves of tomatoes are curled in the greenhouse and in the open field, and due to a shortage of certain minerals. Most often, tomatoes lack phosphorus salts. In such cases sheet plates have gray shade, and the veins on them acquire a purple-red tint.
Such a situation can arise both at the stage of growing seedlings, and a few weeks after transplanting seedlings to a permanent place, as well as during budding and the beginning of flowering.
In this case, the answer to the question why the tomato leaf curls what to do, just apply liquid top dressing with double superphosphate, spilling the plant under the root.
Why do tomato leaves curl inward? If the lower leaves are twisted down, then most likely there is an excess of zinc in the soil. And twisting of the upper young leaves occurs with a lack of sulfur, boron and copper. Curved tips may also indicate a potassium deficiency.
If the balance of this compound is not urgently replenished, then necrosis may develop, in which thin veins become faded, and the tissues themselves become brown. To replenish potassium reserves, if the leaves of tomatoes curl down, it helps to strait the plantings with a solution of potassium sulfate or complex potassium magnesia (potassium + magnesium).
Tomatoes are curling leaves down what to do? Root and foliar top dressings help to solve the problem of the lack of certain substances. In the middle of the growing season, carry out a planned fertilization of the plantation with phosphorus-potassium compounds, for example, a solution of superphosphate and potassium nitrate. Treatments of plants (foliar top dressing) with a solution of preparations with microelements available on the market have proven themselves well.
Ash - an alternative to synthetic mineral fertilizers
Instead of ready-made mineral products, many vegetable growers make ash, which contains potassium, phosphorus and all needed by plants trace elements, and in an easily digestible form. Ashes left after burning sunflower tops, straw, birch, pine, fruit trees, herbs and shrubs, is considered a worthy replacement for many mineral and microfertilizers.
The easiest way to feed, if you don’t know what to do when twisting tomato leaves, is to water the plants under the root and spray them with an ash infusion from a spray bottle, which is prepared by diluting two glasses of sifted ashes in 10 liters of water (leak for a day, before pouring into strain the sprayer; filtration is not required before watering the bushes).
bacterial cancer
The leaves of tomatoes curl down, and at the same time the lower leaves turn brown and die, the stems and petioles crack and become covered with sores, and a vascular pattern in the form of a brown ring is visible on the cut of a thick stem, caused by a serious disease of nightshade - bacterial cancer or bacteriosis. It is impossible to cure the disease, and treatment with Aviksil can only stop the process. Therefore, plants showing signs of infection should be immediately removed from the plantation and disposed of by burning.
As you can see, there are a lot of reasons why the leaves of tomatoes curl. Follow the agricultural practices of the crop, plant seedlings in the beds in a timely manner, do not overfeed the plants, do not use fresh manure for tomatoes, organize regular watering and ventilation of greenhouses, and you are guaranteed a harvest of juicy fruits every year!
Once at home, in Peru and Ecuador, tomatoes were considered inedible. After penetrating into Europe, they were first grown as ornamental plant. The romantic French began to call the fruit "tomatoes" because of the scarlet color and shape, reminiscent of a human heart. In Russian, the name was transformed into "tomato" and exists to this day. Tomatoes have long occupied a strong place in the human diet. Those who have the opportunity grow them themselves. Unfortunately, this can lead to growing problems and crop diseases.
General information about tomatoes
Tomatoes belong to the Solanaceae family. The culture grows well on sandy loamy soils and loams, is very thermophilic, and easily tolerates dry air. The bulk of the varieties ends their growth with the appearance of an inflorescence, does not need pinching and garter. Fruits can be round, oval, pear-shaped, plum-shaped. Their color, depending on the variety, can be red, yellow, purple, orange.
Inside the fetus is divided into 3-8 chambers. In strongly ribbed tomatoes, the number of seed compartments can reach up to 20. Fruits weighing 60 g are considered small, varieties with fruits weighing more than 100 g are considered large tomatoes. bigger size tomatoes, the shorter their shelf life. Varieties of universal purpose are suitable for salting, pickling, pickling, drying and other processing methods.
tomato seedling
Tomatoes, like many other vegetables, bring undoubted benefits. They contain vitamins, sugars, organic acids and valuable substance lycopene. This antioxidant is considered to be more effective than other carotenoids.
On a note! Lycopene reduces the risk cardiovascular disease, the aging of the body slows down, the level of bad cholesterol drops, the development of pathogenic microflora in the intestine is suppressed.
Why Do Tomato Leaves Curl?
At self-cultivation tomatoes can sometimes be faced with a problem: the leaves begin to curl or twist. A similar phenomenon can be observed both on individual specimens and on all bushes. To eliminate the cause, it is important to understand why this happens.
At the seedling
Since young plants are still too tender, they need especially careful care. Seedlings usually grow in small containers, so you have to constantly monitor the volume and frequency of watering, the microclimate. This is why tomato leaves curl:
- Temperature too high. Sometimes on a sunny window, the temperature can rise to 35°C or more. Because of this, the leaves wither and curl during the day, and by night they take on a normal shape. You should transfer the seedlings to a window of a different orientation, or shade it.
- Insufficient watering will result in the leaves will start to curl down. Plants need to be watered 2 times a week, while making sure that the topsoil always remains slightly moist. If the bushes “drink” the water too quickly and the leaves of the tomatoes curl, what should I do in this case? It is recommended to transplant seedlings into larger pots.
- Nutritional imbalance. Why do tomato leaves curl up in this case, experienced gardener clear immediately. With a lack of zinc, the leaves are bent down, and the tops of the shoot are twisted. Calcium deficiency is also manifested by twisted leaves and their pale color. Due to the lack of boron, young leaves bend the edges down. With iron deficiency, the leaf plates turn yellow, and their tips are bent upwards. It is necessary to fight this by introducing correct doses complex preparations, for example, Kemira, Universal, Mortar.
- Pest or disease attack. After the attack of the whitefly, the leaves will twist and their edges will begin to dry. Plants are urgently treated with Fufanon or Biotlin. Infection spider mite causes twisting of tender leaves at the very top. With a bacteriosis disease, the shoots stop growing, and the leaves curl, dry and wither. There is no cure for the disease. Sick specimens are destroyed.
If the seeds were dressed before sowing, they used nutrient soil and observed the agricultural technology of growing seedlings, then such troubles should not happen with tomatoes. It happens that problems arise after landing in a greenhouse or open ground. The reason for this is often the same mistakes that were made when growing seedlings.
One example of twisting
In adult plants
After landing on a garden bed or in a greenhouse, seedlings sometimes begin to wither, twist, dry and shed their leaves. Why do tomato leaves curl shortly after planting in the ground? There are several reasons for this:
- The leaves are curled into a tube. This may be due to damage to the roots. If the "relocation" was done carelessly, the roots were damaged and cannot normally absorb moisture and nutrients. In the event that there is confidence that everything is in order with the soil, the plants should be left alone for 4-5 days. After a while, the bushes will return to normal. The second reason for this is the untimely removal of stepchildren. They should be removed at a length of 3 cm. The third factor is that the humidity is not adjusted. It is necessary to establish the correct watering and ventilate the greenhouse more often. Phosphorus deficiency is possible, fertilizing with phosphorus fertilizer is necessary.
- The leaves are twisted in a spiral. There can be only one reason for this - a lack of zinc. Top dressing of 30 g of superphosphate and 50 g of ash will help. Pour a mixture of fertilizers with 1 liter of heated water and leave for 2 hours. Then dilute the concentrate with water in a 10-liter bucket and use by pouring 0.5 liters of the composition under each plant. This fertilizer contains zinc in the required amount.
- The edges of the leaves curl up due to a deficiency of copper and magnesium. To eliminate it, you need to apply a solution blue vitriol and magnesium sulfate. Add a pinch of both substances to a bucket of water and mix thoroughly. Carry out top dressing on wet ground.
- Tops of tomato bushes can curl due to excess nitrogen. This happens if the summer resident overdid it with the application of nitrogen fertilizers. You can restore the balance of the soil by adding potassium in the form of ash. The curl virus can also twist the tops of the shoots. There is no cure for this disease. Sick plants will have to be destroyed so that the virus does not pass to healthy bushes.
- Leaves can curl inward for several reasons. This happens when there is a lack of molybdenum or an excess of zinc. That is why it is necessary to apply complex fertilizer at the right time and do not violate its dosage. Here, again, fertilizer from a mixture of ash and superphosphate will help out, in which the necessary elements are in the right ratio. Another reason why tomato leaves curl inward may be a lack of moisture, especially in powerful indeterminate bushes. It is best to organize a drip irrigation system. Mulching the surface will also help retain water in the soil. Heat and lack of lighting also lead to the twisting of the leaves down. In hot weather, you need to ventilate the greenhouse more often and pour over its walls cold water. If there is not enough light, wash off the dust from the walls and roof of the structure.
Leaves are twisting
To prevent these problems, attention should be paid to preparing the soil before planting. Seedlings must also be of high quality, so it is recommended to grow them in compliance with all the rules.
In addition, the leaves can twist into a "ram's horn", as in seedlings, due to bacteriosis and pest invasion. But in this case, there will be other signs. Insects can be seen visually.
With bacteriosis, young leaves on the top of the stem will begin to shrink, the inflorescences will become small, and the ovaries will not form at all. The cause of bacteriosis can be both infected seeds and the spread of the disease by pests (black aphids, whiteflies). To prevent their appearance, it is recommended to spray the bushes with infusion of wormwood, garlic, hot pepper, tobacco, yarrow. In case of mass infection, industrial insecticides are used.
Important! After applying chemicals, vegetables cannot be eaten, so the last treatment is carried out 2-3 weeks before harvest. Biological products act more slowly, but the hearths are edible within a week after spraying.
The main diseases of tomatoes
According to experts, problems in growing tomatoes occur more often due to improper agricultural practices, but at the same time, various diseases can interfere with harvesting. As a result of selection, varieties have appeared that are resistant to common tomato diseases, but this only reduces the risk, and does not completely eliminate the damage to the crop.
The main diseases of tomatoes include:
Sometimes, due to improper care, soil phytotoxicity can occur, when, with the inept application of pesticides and fertilizers, the soil begins to oppress the crop instead of nourishing and growing it. In this case, the leaves will begin to become spotted with a purple tint, and then dry.
From all of the above, you can make a way out, which is a pledge successful cultivation tomatoes is a strict observance of agricultural technology. Only when proper care you can get a quality crop from this crop without thinking about why the leaves of tomatoes curl.
