Since cucumber is a representative of pumpkin plants, it is very susceptible to white rot. It must be remembered that cucumber is a southern crop, so it has a weak root system. Of course, the question arises: what to do if the cucumbers wither?
Wilting of cucumber leaves is one of the common problems that can be encountered when growing this crop. This can be caused by a number of reasons, including fungal diseases. The latter is a white flake-like coating with black dots located inside. During development of this disease softening of the plant tissues occurs, mucilage occurs, after which the cucumbers wither and their fruits die.
In most cases, the disease makes itself felt when the plant enters the fruiting phase. Based on what signs can this be established? This also explains the yellowing of the upper leaves (this is accompanied by the acquisition of green veins). Wilting of the leaves of the plant is observed before or during fruiting. With sudden changes in temperature during the day and night, rot causes maximum damage to the plant.
For example, to eliminate the risk of root rot affecting the cucumber crop, it is recommended to sow benign, treated, hardened seeds. Along with this, you should not deviate from the agricultural technology of growing cucumber crops. Because of this, the leaves on cucumbers and stems wither and, ultimately, this leads to the death of plants caused by physiological wilting. However, not everything is so hopeless. It is necessary to prepare an intense pink solution from ordinary potassium permanganate. Use it for spraying, while providing the plants with plenty of watering, carrying out regular hilling.
Often, hilling will promote the formation of adventitious roots. This will bring the plant back to life and expect a harvest. There is an alternative - biological preparations “Fitosporin” and “Trichodermin”. Along with this, wilting of cucumbers can also be caused by a sudden change in weather, even in the absence of frost. Weak root hairs are unable to withstand low soil temperatures, which causes the plant to wither.
cucumbers in open ground
Therefore, it is worth taking care of shelter for cucumbers. But very often this crop begins to wither, we frantically search for the cause of the problem - why do the cucumber leaves wither? The most common reason why cucumber leaves may begin to wither is a simple lack of moisture. When plants are not watered enough or there is a drought, their leaves begin to wither, then they dry out and turn yellow until they fall off completely.
This can be done early in the morning or in the evening closer to sunset. If you planted cucumbers in a greenhouse and planted tomatoes next to them, the cucumber tops may begin to wilt. Although both of these vegetables like frequent watering, cucumbers also need high air humidity, and a dry greenhouse climate can cause cucumber leaves to wilt.
The vegetable does not tolerate this fertilizer at all, and in order to save the harvest and prevent the plant from dying, it is necessary to generously spill the foliage with water to completely wash off the herbicides. Infestation by aphids can be detrimental to a vegetable; if you notice wilting, pay attention to the back side of the leaf. When fears are confirmed, there is no time to waste, otherwise this pest will be able to infect all healthy leaves in a matter of days.
When a plant is infected by this fungus, its foliage becomes softer, covered with mucus, and soon falls off completely. Even before planting seedlings, cucumber seeds and growing containers should be treated. The soil also needs to be disinfected and, if possible, completely replaced. In order to grow a good and rich harvest of cucumbers, you must comply with the necessary agricultural technology conditions and care for the plant correctly - in a timely manner.
A hilling system can also help, thanks to which fungal diseases will not be able to gain a foothold on the crop. Among the common problems of vegetable growers who grow cucumbers is leaf wilting. First of all, you should find out the reason for this phenomenon. Despite their commonness, cucumbers are a fairly delicate plant. If they are planted too close to each other, they interfere with each other's growth, experience discomfort and, as a result, wilted leaves appear.
Cucumbers are one of the most popular vegetables that are eaten throughout the year, so they are grown both in greenhouses and in open ground in almost every garden plot. But sometimes, despite the fact that the gardener follows all the recommendations, for some reason the leaves of the cucumber wither. Let's determine the main causes of this problem.
Why do cucumber leaves wither?
Gardeners have identified the following main reasons why cucumber leaves wither:
Common diseases of cucumbers: descriptions and photos of diseases
At the most different stages development, vegetables are susceptible to dangerous diseases. As a result of the defeat, the cucumbers turn yellow, spots appear on the leaves of the cucumbers, the plants weaken and even die.
Root rot can cause cucumber leaves to turn yellow.
This disease of cucumbers appears when the soil temperature sharply decreases and when watering at cold temperatures. If you use soil in which pumpkin crops have previously been grown, the risk of the disease increases. Root rot can also occur if planting is done incorrectly. If it is not clear why the leaves of cucumbers turn yellow, then you should pay attention to whether there is premature wilting and cracks on the lower part of the stem. If these signs are found, then it is possible that it is infected with root rot.
To prevent disease, you must strictly follow the rules for planting seedlings. The stems should not be planted too high.
If the disease has been detected, then the soil is raked from the stem to the very roots. And they are treated with a solution copper sulfate, polycarbacin or copper oxychloride. Plants that have died from the disease should be dug up and burned. The soil from them is treated with a solution of copper sulfate.
If the ovaries of cucumbers turn yellow, then this is bacteriosis
Gardeners often encounter cucumber ovaries turning yellow or even rotting. The reason for this may be a cucumber disease such as bacteriosis. Its spread is facilitated by high soil or air humidity.
Gray spots on cucumber leaves can be caused by a cucumber disease called gray rot.
At low night temperatures, with poor ventilation and when watering with cold water, gray spots may appear on the leaves of cucumbers, in the axils of the leaves and on the stems. These are signs of gray rot. To prevent it from forming, it is necessary to prevent the plants from becoming too crowded, not to water them with cold water, and to ventilate the room frequently.
Ascochyta disease is why cucumbers turn yellow and why cucumber leaves turn yellow
This disease affects leaves, stems and fruits. First, large yellow spots appear, then they are replaced by gray ones. Afterwards, black dots appear on the plant. In case of damage, it is necessary to spray with Bordeaux mixture. If it is not clear why cucumbers turn yellow, then it is worth examining the fruits for signs of ascochyta blight.
Sclerotinia or white rot
It affects all organs - petioles, fruits, leaves, tendrils, stems. A white coating forms on the tissues, after which they soften and rot. First, white and then black fruiting bodies appear on the affected areas. They are called sclerotia. They are the cause of infection. Sclerotia overwinter in the soil. When the air or soil is too wet, rot will spread. The affected areas should be sprinkled with fluff lime or charcoal.
Plants are most often susceptible during the fruiting period. The formation of rot can also be caused by temperature changes and thickened plantings. It is imperative to alternate cultures. Sprinkle stems with signs of damage with lime. The affected parts must be cut out, partially including healthy tissue. If the infection is very widespread, it is better to remove the sheets during hot hours - this way the wounds will dry out faster. The sections are sprinkled with crushed coal or wiped with a solution of copper sulfate. Provide regular ventilation. Watering is carried out in the evening warm water. You can try feeding. For ten liters of water, use ten grams of urea, one gram of zinc sulfate and two grams of copper sulfate.
Other fungal diseases of cucumbers in open ground: spotted blight, cladosporiosis
Anthracnose or spot burn is characterized by light brown spots that have an irregular shape. As a result of the damage, the fruits do not grow to the required size, and in severe cases they disappear.
The next fungal disease of cucumbers in open ground is olive spot or cladosporiosis. First, an olive coating appears on the plant, then the tissues become depleted and crumble. Then spots appear on the fruits. You can look at photos of cucumber diseases to better recognize cladosporiosis.
Photo gallery of diseased cucumbers (click to enlarge):
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udec.ru
Why do cucumber leaves turn yellow? What should I do? Help?
Dmitry Andreev
there was such a problem. this year I planted them in a shadier place and no problems
Sunny_sXe
try spraying with a weak solution of potassium permanganate in water
orgrlrr 87654654
You need to water with warm water, not cold
Natasha Vitova
whitefly aphids and mites
An effective remedy is the biological control method. To do this, they use a natural enemy - phytoseiulus. It is propagated on soybean plants and released onto plantings affected by spider mites, where it sucks the eggs. During the summer it is released from 2 to 6 times every 10 - 12 days, 80 - 100 individuals per 1 square meter. m. The use of the fungus Entomophthora adjarian, which destroys the tick completely, is also effective. -----
Just where to get it all... .
I collect these leaves, burn them, and water the whole lash with Baikal or summer resident (the smell is Vietnamese star diluted in water)
Anat
To help you, I would like to know: 1) Where cucumbers grow, in open ground
or in a greenhouse? 2) Which leaves turn yellow, lower, upper or on the whole plant
straightaway? 3) What preceded the yellowing of the leaves - application of fertilizers, lack of watering, treatment with drugs against diseases and
insect pests, sudden changes in temperature and humidity? 4) What is the planting density?
But even without knowing the answers to these questions, I can advise you the following:
1) If the lower leaves turn yellow, simply remove them; this will not harm the plant.
2) Fertilize the plants with SOLUTION (6 teaspoons of fertilizer
per 10 liters of water). Before fertilizing, water the plants with water.
3) Water the plants only with warm water (cold - under no circumstances).
4) When watering, try not to get water on the leaves.
5) If possible, hill up the plants. The ground for
It is better to bring hilling from outside. Use soil for hilling that
which is undesirable next to the plant - it will only damage the roots and cause harm.
6) Enrich the soil with potassium - add ash (1 cup per 1 square meter)
7) Watering should not be excessive and at the same time optimally sufficient. I wish you success and great harvests.
Ludmilcka
I think either they poured cold water and the stream was strong or there was not enough potassium. Try sprinkling the soil with ash before watering. And if you don’t have enough capacity to hold water, fill plastic bottles and place them around the perimeter of the greenhouse and when you need to water, use them; the advantage is that the bottles, which have warmed up during the day, will heat the greenhouse. Or maybe you overheated them, the manure is fresh, it’s hot outside, you didn’t open them at the right time. There are several reasons. Good luck!
Marina Shumikhina
You need to water the cucumbers with water with added ash.
Hilarion
feed with ashes.
Why do the leaves of cucumbers turn yellow in a greenhouse?
Why do cucumber leaves turn yellow in a greenhouse???
ife
Do they turn yellow or become covered with yellow spots (become like marble)? In the second case, spider mites are possible, spray with Fitoverm. It happens that they turn yellow from a lack of potassium, but then the edges of the leaves dry out.
Pro100th
cucumber leaves may turn yellow due to a mite; it sits on the plant on the back side of the leaf and the leaf begins to turn a little yellow with spots like marble. Maybe the aphid is starting, if there is a lot of it, then it is immediately visible, and if it has just attacked, then the leaf will turn yellow, but the aphid itself is clearly visible.
If the leaf turns yellow from the very edge, there is not enough potassium, it needs to be fertilized.
Powdery mildew begins as yellow spots initially, and then becomes covered as if with flour.
the leaves at the very top can simply burn from the sun; if young leaves turn yellow, then there is not enough copper.
Well, watering should be with warm water, not over the leaves, but at the roots, watering the entire soil under the plant.
Aleso
The leaves of cucumbers in the greenhouse turn yellow, which means the plant is infected with a fungal disease." powdery mildew"or not regular watering.
If you don't fight powdery mildew, you can lose your entire crop.
It is necessary to spray the plant with the fungicide drug Topsan or Karatan, and the cucumbers must also be fed with liquid mullein; there may be a lack of magnesium and potassium.
dolfanika
Experienced gardeners have noticed that cucumbers turn yellow for several reasons, this could be
Poor pollination of plants, too many ovaries on the plant, also diseases, incorrect temperature regime in a greenhouse, lack of minerals in the soil, high temperature and insufficient watering of plants.
1 Cucumbers love warmth; temperatures favorable for their development are within + 20 - +26 degrees. At temperatures below + 14 degrees or above + 40 degrees, cucumbers stop growing. Therefore, during frosts, be sure to cover the cucumbers with film and place bottles of hot water under it.
2 With a lack of nitrogen and other minerals, the leaves of cucumbers first lighten and then turn yellow, and gradually the vines of the plant also become yellow. Crocheted cucumbers also indicate a lack of nitrogen.
Therefore, three to four days before planting the plants in the greenhouse, top dressing is carried out and sprayed with a nutrient solution.
In autumn or spring, rotted manure is added, about three buckets per square meter. But excess minerals also lead to yellowing of leaves.
3 If pollination is poor, which also causes yellowing, then spraying with a solution boric acid, dilute 5 grams of boric acid per 10 liters. water. You can spray with the "Bud" preparation and use a sweet solution to attract insects to the greenhouse. 1 tablespoon of honey is diluted in 2 liters of water.
Insects for pollination are attracted by dill planted in the greenhouse, borage.
4 More than 20 ovaries on one bush also harm plants that do not have time to get enough nutrients.
And watch a video about diseases of cucumbers that cause yellowing of plants.
lady v
As a rule, any disease of cucumbers ends in yellowed leaves, so you need to look at initial development diseases. For example, if the ovaries turn yellow along with the leaves, this may be a consequence of insufficient watering, crowding, lack of pollination, and even night cold. Also, leaves may turn yellow after being attacked by melon aphids and spider mites, but these insects can be easily detected on the lower sides of the leaf and sprayed, for example, with a solution of onion peels. There are also numerous diseases: powdery mildew, anthracnose, bacteriosis, mosaic. As a rule, most diseases are combated with Bordeaux mixture, but during the fruiting period this is undesirable. And finally, leaves can turn yellow due to lack of nutrition or its excess - we are, of course, talking about fertilizers. 
Glamurrka
Of course, it’s very bad when cucumber leaves turn yellow. And when these cucumbers are in a greenhouse, including. It seems that plants grow better in a greenhouse than just in a garden bed. But even here problems can arise. And such a problem is yellowing of the leaves of cucumbers. Why does this happen? Mainly due to cucumber disease and also due to insects. In the case of insects, they can greatly harm the plants and it is better not to spray them against insects, otherwise you can completely throw away the entire crop of cucumbers. If this is some kind of disease, then it can and should be fought. Buy special medicines for plants depending on the disease.
Andrey0817
The leaves of cucumbers in a greenhouse may turn yellow because the soil is poor in a fertile layer of humus (humus). They definitely need to add rotted organic matter to the soil.
High temperatures and insufficient watering can cause yellowing of the lower leaves.
But the most common cause is root rot.
Due to high humidity, poor ventilation and thickening of plants, a fungus develops in the root system, which affects the roots of cucumbers. This will undoubtedly affect the leaves.
Ludvigo
- Lack of moisture cold water for watering.
- Cold damp weather, early frosts.
- Lack of nitrogen in the soil, poor soil in general.
- Fungal diseases of leaves (powdery mildew, fusarium wilt, root rot).
- Pests: melon aphids, spider mites).
- Many ovaries on the plant (more than 25).
- Insufficient pollination.
First you need to find the cause, and then fight it. Have a good harvest!
Alexander Vetrov
As far as I know, many cucumbers planted in a greenhouse may have cucumber leaves that turn yellow for several reasons. In particular, this can occur as a result of their overheating, as a result of their poor pollination, and also due to a very common fungal disease of cucumber leaves called powdery mildew.
darkmessia
If the leaves of cucumbers turn yellow in your greenhouse, there may be several reasons for this. You may be watering your cucumbers too little because cucumbers love water. Perhaps a tick has wound up, it sits on the other side of the cucumber leaf where you do not see them. In this case, you need to spray your plants with an anti-mite drug.
bolshoyvopros.ru
Problems with cucumbers. -- Questions and answers --
|
In July, bacteriosis usually manifests itself in this way, and later, in colder weather, anthracnose also joins it. They can be distinguished from each other by their diseased ovaries.
If the marbled color of the leaves (not in the form of individual spots, but continuous) is dark green with light green, then this is a lack of magnesium. Spray the plants with the preparation "Uniflor-bud" (2 teaspoons per 10 liters of water) or burnt magnesia (sold in pharmacies; just dilute 1 teaspoon in 5 liters of water) or water with dolomite milk (1 glass of dolomite per 10 liters of water; according 0.5 l at the root of plants with marbled leaves). Cucumbers are one of the most popular vegetables that are eaten throughout the year, so they are grown both in greenhouses and in open ground in almost every garden plot. But sometimes, despite the fact that the gardener follows all the recommendations, for some reason the leaves of the cucumber wither. Let's determine the main causes of this problem.
Why do cucumber leaves wither?
Gardeners have identified the following main reasons why cucumber leaves wither:
Why do cucumbers wither?
Withered leaf of a plant - photo
A very common problem for many vegetable growers who grow cucumbers on their plots is wilting of the leaves on the plants.
Growing cucumbers is quite a difficult task. These vegetables are very demanding in terms of growing conditions and care. It often happens that leaves on plants wither. There are several reasons that explain this process. In this article we will answer the question “ Why do cucumber leaves wither?”.
Why do cucumber leaves wither?
There are several reasons why cucumber leaves wilt. Cucumbers are very delicate plants and quite sensitive to changes in growing conditions and weather conditions. It’s especially disappointing if just yesterday the cucumbers looked very good, grew quickly and set ovaries, but today the leaves hang downward and are all limp.
Most often, the reasons for wilting of cucumbers are: too high a temperature, dry air, lack of nutrients, as well as various diseases. Below is a list of the main reasons for the wilting of cucumber vines, and we will also tell you how to deal with these reasons.
Lack of moisture
Lack of moisture is the most common cause of wilting of cucumber leaves. Everyone knows that cucumbers are very demanding when it comes to timely and abundant watering. With little watering, at the first signs of soil drying out, the leaves immediately become limp. It is necessary to water the plants immediately, otherwise the wilted leaves begin to turn yellow and die.
To prevent this from happening in the future, you need to regularly water the cucumbers 4-5 times a week.
Nutrient deficiencies
Cucumbers have a very large green mass, which requires a lot of nutrients to grow.
Another common reason Why do cucumber leaves wither? is a lack of a nutrient such as nitrogen. Wilted leaves are an indicator of a lack of nitrogen in the soil. Moreover, this is the first sign, which means that all is not lost.
To cope with this problem, it is necessary to add nitrogen to the soil as quickly as possible. You can fertilize with liquid chicken manure, or you can use urea (1 tablespoon per 10 liters of water). In order to satisfy the plant's need for nitrogen as quickly as possible, it is necessary to produce foliar feeding urea solution.
Exposure to direct sunlight
In the wild, cucumbers grow under trees, twining around their trunks. Accordingly, a shadow is created under the trees. This should be taken into account when choosing a landing site.
Very often, cucumbers turn yellow due to exposure to direct sunlight. Plants especially suffer due to prolonged exposure to the sun during the day. The leaves wither, turn yellow and good harvest does not work.
A solution to the problem can be a slight shading of the cucumber vines, for example, with a special covering material.
Diseases and pests
Diseases that can cause wilting of cucumbers are downy mildew, olive spot, cladosporiosis.
To prevent these diseases, it is necessary to sprinkle cucumbers with potassium permanganate and a chalk solution. Affected leaves must be plucked off to avoid spreading the disease.
These are the main reasons why cucumber leaves wither. Don’t let it happen and prevent it in time - then a wonderful harvest of vegetables awaits you!
Why do cucumbers wither video.
ferma-biz.ru
Why do cucumbers wither in a greenhouse, what to do in such cases
One of the goals of any gardener or vegetable grower is to obtain environmentally friendly products, which is especially important in our time. However, growing fruits and vegetables requires certain knowledge, including that which allows timely recognition of diseases and other misfortunes to which fruits are susceptible. Among vegetable crops cucumber is one of the most popular plants, confidently occupying its niche in vegetable gardens and larger farms.
Private owners prefer to grow this vegetable in greenhouses, which gives early harvest, but at the same time cucumbers can be attacked by various diseases in the form of pests and rot. Often, cucumber leaves actively wither. Why is this happening?
Untimely watering
Cucumbers are a rather delicate, even capricious, vegetable that requires attention. One of the reasons lies in the elementary negligence of the vegetable grower - for example, untimely watering. If this happens, the leaves wither first, then they dry out, as a result of which they turn yellow, wither and fall off.
If you start to notice yellowing on the leaves, then first try watering them more intensively. It is necessary to nourish with moisture in the morning or late in the evening. However, everything is good in moderation - you should not pour too much water, as there is a risk of root rot.
The usual watering rate for cucumbers in a greenhouse and outdoors is 4–5 times a week. If the leaves still turn yellow and wither, using a regular solution of potassium permanganate can give a good result - it will protect against many diseases. It is recommended to treat the lower parts of the stems with preparations such as Gitrauskin, Fitosporin, Kornevin or Trichodermin. It is better if all these drugs are used as prophylactics.
Pests and herbicides
Another attack that this representative of the pumpkin plant family is exposed to is white rot. Moreover, the disease spreads quickly. Why? This occurs due to leaves touching when seeds are planted too close. The fungus makes the cucumber foliage very soft; then it becomes covered with mucus, and white coating, and the leaves wither and fall off. To defeat this disease, first remove the infected parts of the cucumbers (vines, vegetables, tendrils). Sprinkle the cut healthy part of the fruit with TMTD or fluff lime (ordinary crushed coal will also do).
Place the diseased fragments in a suitable container filled with formaldehyde and bleach. To prevent the development of this disease, maintain the temperature in the greenhouse at 15–17 degrees, gradually reducing the intensity of watering and maintaining effective ventilation.
Herbicides also do not help good development fruits Once on the surface of the leaves, the chemical has a detrimental effect on their internal structure, resulting in wilting. You can wash off herbicides with plain water. Another reason for wilting is planting tomatoes next to cucumbers, since these vegetables require higher moisture, which tomatoes can take away from them.
How to prevent the problem
You need to especially carefully monitor the seedlings in the first stages of their development, because cucumber is still a southern crop, and it is quite natural that it is affected by sharp weather fluctuations, and a weak root system may not withstand too low temperatures.
Another wilting factor is constant strong exposure to ultraviolet rays (at least a little shading is required). To prevent the soil from drying out and the roots from getting too cold, you can mulch. Regular hilling is also considered a good preventive measure.
TeplizaNaDache.ru
why cucumber leaves wither in a greenhouse and what to do
Lidia Provotorova
Look at the root. Perhaps it was overwatered and this is root rot.
Isle of Palms
Growing cucumbers in a greenhouse:
Caring for cucumbers involves thinning, loosening, weeding and watering the soil.
Plantings are watered frequently as the soil dries out. Cucumber loves warm, room temperature water. Humidity during the day and dryness at night will reduce the likelihood of developing diseases.
What do cucumbers lack?
If the plants grow weakly, the stems are thin, the leaves are pale green, the ovary turns yellow - there is a lack of nitrogen. With an excess of nitrogen, plants “fatten”, growth increases, the leaves are large, and flowering and fruiting are delayed.
With a lack of phosphorus, the growth of plants and fruits slows down, the leaves are small and dark green.
With a lack of potassium on the leaves, a pale yellow border is noticeable along the edge of the leaf.
droplet
the problem may be in the roots (rot, ants, beetles, mice) and in the stems - look for rot on the stems
Nadezhda Vasicheva
tamp down the earth, there is emptiness under the roots, dug by shrews, the roots are suspended in the air, only carefully
It becomes especially offensive if just yesterday the vines of cucumbers looked great, quickly grew, fruits formed en masse on them, and the next day the cucumbers look like boiled ones, their leaves hang lifelessly and the ovaries fall off. Most often, the reason that green cucumbers wither is - in the wrong microclimate: at excessively high temperatures, cucumber seedlings not only wither, but also lose their ability to pollinate. After all, growing cucumbers in a greenhouse requires the right choice varieties and more careful care than is required for cucumber varieties open ground. In other cases, it may be due to numerous diseases caused by bacteria, viruses and other infections, much like in humans.
Cucumber diseases
The most dangerous and common diseases of cucumbers are:
- downy mildew; common mosaic; cladosporiosis.
Pests of cucumbers
In other cases, cucumber seedlings may wither when attacked by pests that suck the juices from the leaves or gnaw the roots. There are also many of these pests, but the most common of them include:
- greenhouse whitefly; melon aphid.
You can fight them with infusions of garlic, onions or chemicals. If you detect signs of the disease in time and immediately begin treatment actively, there is a chance that most of the crop can be saved, you should pay special attention to choosing a variety of cucumbers for greenhouses - usually on packages indicates plant resistance to diseases and pests, you should definitely study this data.
The problem of summer residents: why do cucumber leaves wither?
October 20, 2014
So, let's figure out why cucumber leaves wither. Many summer residents face this problem, since cucumber is one of the most popular crops. Who among us does not love a fresh salad of cucumbers and tomatoes, with herbs, and even from our own garden?
What factors influence the condition of cucumber leaves?
Naturally, both inveterate experienced summer residents and novice gardeners begin to worry about the question of what they are doing wrong, why cucumber leaves dry and how to correct this situation. The cause of leaf wilting may be:
- influence of weather conditions; crop disease
Why do cucumber leaves wither in summer?
The most common problem is insufficient soil moisture. This problem is not difficult to deal with - you need to increase the amount and frequency of watering, and the leaves will come to life again.
It is worth considering that you need to water cucumbers either early in the morning or in the evening, avoiding sunlight on the plant. Otherwise, the leaves will gradually turn yellow and fall off over time. When planting cucumbers in a greenhouse, you can also see that their leaves have begun to fade - thus, the crop’s reaction to the greenhouse climate is manifested - for cucumbers it may be too dry, since they need increased air humidity.
Herbicides
When herbicides get on the surface of the leaves, the crop wilts. Cucumbers cannot be fertilized with herbicides, otherwise you can lose not only the leaves of the plant, but also its fruits. To save cucumbers from certain death, it is necessary to carefully water them with water, completely washing off the fertilizer.
Aphid
To find out if aphids are destroying your cucumbers, you need to check the back of the leaves, this is where they will hide. Before the aphids have completely ruined your cucumbers, you should immediately take action and treat the damaged leaves with special means or a regular soap solution.
White rot
This disease most often appears during the period of fruiting. White rot is a fungus, under the influence of which the leaves first become softer, after a while become covered with mucus, and then fall off.
The fungus can be found on early stage and try to prevent its development. The disease begins with the appearance of brown spots on the shoots, which over time form a solid lump. Don’t be too lazy to take safe measures when planting - treat the cucumber seeds and containers for growing them; ideally, you should also treat the soil, or replace it completely. These precautions will help you prevent rot from occurring.
Incorrect care.
If you decide to plant cucumbers, you should carefully familiarize yourself with the conditions in which they need to be kept; this will help you avoid many mistakes, many of which may turn out to be irreparable. As you know, cucumber is a southern crop, and therefore has a weak root system, which may be affected by sudden changes in weather conditions. In no case should the roots of the plant be allowed to dry out or become hypothermic. To prevent the occurrence of crop diseases, even the simplest remedy can help - a solution of potassium permanganate, which can be used to spray cucumbers.
As you know, potassium permanganate has disinfectant properties and can save your crop from many diseases if used regularly. When using a solution of potassium permanganate, you should also pay attention to the proportions - the solution should not be too saturated. Note: we decided to rest big company? We recommend visiting http://www.galaktica.ru/karaoke_catalog/ "Galaxy".
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Almost everyone who comes to their country house for the summer plants their own garden, where vegetables and fruits are grown that adults and children can safely eat. One of the most popular vegetable crops that is planted by almost all gardeners, both experienced and beginners, is the cucumber. But very often this crop begins to wither, we frantically search for the cause of the problem - why do cucumber leaves wither? First of all, it is necessary to find out what factor can influence the withering of foliage, and there are several of them: agronomic conditions may not be met, the influence of weather conditions or a disease of the crop .Cucumber is a rather delicate plant and will not tolerate careless treatment of its person.
Problems that cause cucumber leaves to wilt.
The most common reason why cucumber leaves may begin to wither is a simple lack of moisture. When the plant is not watered enough or there is a drought, their leaves begin to wither, then they dry out and turn yellow until they completely fall off. As soon as you notice that the leaves of the cucumbers are losing their juiciness and elasticity, just start watering them more often.
This can be done early in the morning or in the evening closer to sunset. But you shouldn’t overwater cucumbers either, otherwise there may be a risk of infection with root rot; everything should be in moderation. If you planted cucumbers in a greenhouse and planted tomatoes next to them, the cucumber tops may begin to wither.
Although both of these vegetables like frequent watering, cucumbers also need high air humidity, and a dry greenhouse climate can cause cucumber leaves to wither. Another reason why cucumber leaves wither may be herbicides on their surface. The vegetable does not tolerate this fertilizer at all, and in order to save the harvest and prevent the plant from dying, it is necessary to generously spill the foliage with water to completely wash off the herbicides. Infestation by aphids can be detrimental to the vegetable; if you notice wilting, pay attention to the back side of the leaf.
When fears are confirmed, there is no time to waste, otherwise this pest will be able to infect all healthy leaves in a matter of days. In order to get rid of aphids, you can use a regular soap solution or buy ready-made products. Since cucumber is a representative of pumpkin plants, it is very susceptible to white rot.
When a plant is infected by this fungus, its foliage becomes softer, becomes covered with mucus and soon falls off completely. Most often, such a disease manifests itself already during the period of fruit appearance, and it can be detected at a very early stage. Pay attention to the root system of the shoot; if brown spots appear on it and subsequently form a solid lump, this is the first sign of white rot.
Since this is a fungal disease, it is easier to prevent than to cure. Even before planting seedlings, cucumber seeds and growing containers should be treated.
The soil also needs to be disinfected and, if possible, completely replaced. In order to grow a good and rich harvest of cucumbers, you must comply with the necessary agricultural technology conditions and care for the plant correctly - in a timely manner. In principle, the simplest solution of potassium permanganate used for spraying will help prevent many diseases . An earthing system can also help, thanks to which fungal diseases will not be able to gain a foothold on the crop. Since cucumber is still a southern crop and its root system is weak, sudden changes in weather conditions can also affect it. To prevent the soil from drying out or the roots from overcooling, you can mulch the soil surface in the place where you planted the cucumber seedlings. Diseases of cucumber leaves wither video. Now you know why cucumber leaves wither, and you can prevent possible causes of death of cucumber foliage.
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Greetings to all friends of gardeners and gardeners! In the comments to articles, my readers often ask the question: “why cucumber leaves wither in a greenhouse and in open ground? One of the reasons for this unpleasant phenomenon may be a fungal disease called “Fusarium wilt of cucumber,” which mainly affects plants in greenhouses. The first signs of this disease are wilting of the top of the plant and individual leaves. The wilting process is also accompanied by rot of the stem in its root part.
During the flowering phase and at the very beginning of fruit formation, the roots and root collar of cucumbers become brown, cracks appear on their bark, which soon rot. If you cut a cucumber stem in the root zone, you can see a ring of browned vessels. If the growing conditions are too wet, then a pink coating can be observed on the stems of diseased plants and on the soil next to them.
This plaque is an accumulation of pink conidia - the causative agent of the disease. The causative agent of this disease penetrates cucumbers through wounds in the root and root hairs. The disease is most dangerous when the soil temperature drops below 10 - 15 degrees. The main source of plant infection with fusarium is contaminated soil.
The fungus gets there along with plant debris and can persist there for quite a long time. The Fusarium fungus is also transmitted with seeds. Based on the above, it is clear that the main methods of combating Fusarium wilt of cucumber are disinfection of the soil and treatment of seeds before sowing.
Heavily infested plants must be removed and destroyed. Monitor the maintenance of optimal temperature and humidity values in the greenhouse.
Do not water cucumbers with water at a temperature below 22 degrees. It is worth noting that cucumber leaves wither not only because of this disease. Other reasons for leaf wilting can be found in the “Plant Diseases and Pests” section.
Cucumbers are withering, what to do?
Withering of cucumber leaves is one of the common problems that can be encountered when growing this crop. This can be caused by a number of reasons, including fungal diseases.
What to do if the leaves of cucumbers wither? Any representative of pumpkin, including cucumbers, are affected by white rot. The latter is a flaky white coating with black dots located inside. With the development of this disease, plant tissues soften, mucilage, after which the cucumbers wither and die of their fruits. The risk of developing root rot exists regardless of the stage of plant growth.
In most cases, the disease makes itself felt when the plant enters the fruiting phase. Based on what signs can this be established?
First of all, the lower part of the stem near the roots is covered with brown spots, which merge over time, the plant tissue itself acquires a brown tint, which begins to rot, after which the rot spreads to the roots. As a result, the plant begins to receive less water and nutrients.
This also explains the yellowing of the upper leaves (this is accompanied by the acquisition of green veins). Wilting of the leaves of the plant is observed before or during fruiting.
With sudden changes in temperature during the day and night, rot causes maximum damage to the plant. The best method to effectively resist cucumber diseases is regular preventive measures. As you know, the costs of disease prevention are not comparable with the costs required for the treatment of plants.
The main activities include preparing seeds, preparing soil, cultivation structures, and agricultural equipment for each summer season. For example, in order to eliminate the risk of root rot affecting the cucumber crop, it is recommended to sow benign, treated, hardened seeds. At the same time, one should not deviate from the agricultural technology of growing cucumber crops.
There are summer residents who, due to insufficient experience, choose narrow and high beds for planting crops, from which irrigation water drains quite quickly. Because of this, the leaves on cucumbers and stems wither and, ultimately, this leads to the death of plants caused by physiological wilting.
How to spray cucumbers if the leaves wither
However, not everything is so hopeless. It is necessary to prepare an intense pink solution from ordinary potassium permanganate. Use it for spraying, while providing the plants with plenty of watering, carrying out regular hilling.
A good effect is obtained by treating the lower part of the stems with the preparation “Kornevin”, “Gitrauxin”, which have a stimulating effect and promote the formation of new roots. Often, hilling will promote the formation of adventitious roots.
This will bring the plant back to life and expect a harvest. There is an alternative - biological preparations “Fitosporin” and “Trichodermin”.
The actions here are similar to those described above. Along with this, wilting of cucumbers can also be caused by a sudden change in weather, even in the absence of frost. Cucumber belongs to the southern crops and has a weak root system.
Weak root hairs are unable to withstand low soil temperatures, which causes the plant to wither. When planting a plant directly in open ground, there is a risk of its death in case of cold weather.
Therefore, it is worth taking care of shelter for cucumbers. Cucumbers are grown by almost all gardeners, both experienced and beginners. The technology for growing this crop is known to everyone, but nevertheless, in many areas every season a problem arises - the leaves of cucumbers wither.
Let's try to figure out why this happens. The first and most common reason why cucumber leaves wither is a simple lack of moisture. If a plant does not have enough water, its leaves will first droop, wither, and then begin to dry from the edges to the center.
How to determine that the cause is a lack of water? It’s very simple - start moistening the beds every day, morning and evening, and if the situation quickly changes for the better, then the problem was only in the wrong watering regime. The second reason why cucumber leaves wither is directly related to the first.
If you planted tomatoes and cucumbers in the same greenhouse, such proximity will not lead to anything good. Despite the fact that both plants are heat-loving, cucumbers require high air humidity, which tomatoes cannot tolerate at all.
That’s why it may turn out that, trying to please the tomatoes, you “dried out” the cucumbers, and they again suffer from a lack of water. The third reason why cucumber leaves wither is when herbicides get into the garden bed. Cucumbers cannot tolerate them at all, so you should not use chemicals not only in the greenhouse, but also in neighboring beds.
If the herbicides have already managed to reach the plants, then abundant watering will help - the chemicals will simply be washed off with water and go further into the soil. Another reason why cucumber leaves wither is damage to aphids. It is very easy to confirm or refute this - you need to look at the back of the sheet.
If you find aphids there, then you need to take urgent measures, since the pest can infect all healthy plants in a matter of days. It is best to use a soap solution or special chemicals, for example, "Iskra" or other similar drugs.
In addition, cucumbers may suffer from fungal disease or mites. The first is eliminated using chemicals such as “Photosporin”, and the second is eliminated by using an infusion of onion peels. The last reason why cucumber leaves wither is incorrect agricultural technology, that is, a whole complex of factors that affect the plant to one degree or another.
For example, excess or lack of fertilizer, incorrectly chosen planting location, when direct sunlight actually burns the leaves. This can also include incorrect watering technology, when plants are watered often, but little by little.
As a result, water does not reach the roots, and the plant begins to suffer. Another watering mistake is spraying water directly onto the leaves on a bright sunny day.
Droplets of water turn into tiny lenses and the cucumbers get burned. So, we have enlightened you on the question of why cucumber leaves wither and indicated the most effective methods of combating this phenomenon. Take care of your plants, and they will delight you with a tasty and rich harvest.
Greetings to all gardening and gardening friends!
In comments to articles, my readers often ask the question: “why cucumber leaves wither in a greenhouse and in open ground? One of the reasons for this unpleasant phenomenon may be a fungal disease called Fusarium wilt of cucumber, which mainly affects plants in greenhouses.
The first signs of this disease are wilting of the top of the plant and individual leaves. The wilting process is also accompanied by rot of the stem in its root part. During the flowering phase and at the very beginning of fruit formation, the roots and root collar of cucumbers become brown, cracks appear on their bark, which soon rot. If you cut a cucumber stem in the root zone, you can see a ring of browned vessels.
If growing conditions are too wet, a pink coating may be observed on the stems of diseased plants and on the soil next to them. This plaque is an accumulation of pink conidia - the causative agents of the disease.
The causative agent of this disease penetrates cucumbers through wounds in the roots and root hairs. The disease is most dangerous when the soil temperature drops below 10 - 15 degrees.
The main source of plant infection with fusarium is contaminated soil. The fungus gets there along with plant debris and can persist there for quite a long time. The fusarium fungus is also transmitted by seeds.
Based on the above, it is clear that the main methods of combating fusarium wilt of cucumber are soil disinfection and seed treatment before sowing. Heavily infested plants must be removed and destroyed. Monitor the maintenance of optimal temperature and humidity values in the greenhouse. Do not water cucumbers with water at temperatures below 22 degrees.
It is worth noting that cucumber leaves wither not only because of this disease. Other reasons for leaf wilting can be found in the “Plant Diseases and Pests” section.
ayatskov1.ru
Many gardeners often encounter the fact that cucumber leaves in the greenhouse begin to wither. Before taking measures to save the plant, you need to figure out what is the reason for this phenomenon. The causes of leaf wilting can be of various origins.
The main reasons for leaf wilting are improper watering and changes in air humidity.
Failure to comply with agricultural technology conditions when growing cucumbers
Why do the leaves wither? Primarily due to improper watering. Cucumber plantings can be overdried, then the leaves first wither and then begin to dry out, and the whole vine has a depressed appearance. Also, when watering, you should avoid getting water directly on the leaves, since in sunny weather this can cause burns to the leaf blade, and in cold weather the leaves can be affected by powdery mildew.
You cannot plant cucumbers in the same greenhouse with tomatoes, since they have absolutely no different needs in air humidity. Therefore, if in such a neighborhood preference is given to the agricultural technology of tomatoes, then it is quite natural that the cucumbers in the greenhouse will react with a deterioration in productivity and appearance, including withering of the leaves. The incorrect dosage of applied fertilizers also affects.
Both a lack of fertilizer and its excess can be disastrous, especially for such a delicate plant as a cucumber.
Action of herbicides. The above-ground part of cucumbers is very delicate; it can react even to the ingress of a very small drop of herbicide. Therefore, you need to be careful when working with these products near cucumber plantings.
Planting density. As they grow, cucumber bushes begin to consume more and more fertilizer and moisture. Stronger bushes begin to oppress weaker plants, which, in turn, wither and die.
If the reason is improper watering, then everything is quite easy to fix. Optimize the required amount of water. It is better to water a little less often, but with a large amount of liquid so that it reaches the depth. Otherwise, only the top layer of soil will be wetted, and new roots will grow there. But since the top layer dries out quickly, and in hot weather it also gets very hot, the roots will be in unfavorable conditions, which will further affect appearance and productivity.
If cucumbers and tomatoes are already planted in a greenhouse, then in order to preserve both vegetables, you need to choose a middle ground that will suit both tomatoes and tomatoes. For example, to prevent wet soil from saturating the air with moisture when watering cucumbers abundantly, you need to install 1.5-2-liter bottles with the neck down near each cucumber bush as close as possible to the base of the stem. Watering must be done directly into these improvised funnels. Water will flow directly to the depth, to the roots. This method of irrigation can significantly save water.
When fertilizing, if possible, use a special fertilizer for cucumbers, strictly observing the dosage. When feeding cucumbers, you need to adhere to the rule that it is better to underfeed a little than to overfeed. If, nevertheless, a certain amount of herbicides gets on the leaves and vines of cucumbers, then you need to thoroughly water the plants with a watering can. Water will wash away all harmful substances. If some time has already passed, then it is better to cut off the whip that received the poison, half or entirely. This will save the remaining lashes. When planting cucumber seedlings, try to leave enough space.
It is considered optimal when per 1 sq.m. there are 3-4 plants, or planting according to the 100x100 cm pattern.
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Damage to the vegetative part and roots by insect pests and diseases
One of the reasons for leaf wilting is damage to the vegetative part and roots of cucumbers by insects.
This is the most unpleasant cause of leaf wilting. It cannot always be eliminated, and in some cases it can completely destroy all plantings.
- Fusarium wilt is a fungal disease that often affects cucumbers when grown in a greenhouse. Its peculiarity is the withered top of the lash and the stem beginning to rot.
- Root rot, signs of damage are clear from the name. This is one of the most dangerous diseases cucumber, if measures are not taken in time, the entire vine, or even the whole plant, may die.
- White rot - leaves become limp and soft, and then fall off, brown spots appear on the root collar.
- Aphids are one of the most common pests that attack cucumber plantings. It is quite easy to detect. By the time the leaves begin to fade, it will already be present in large quantities on the reverse side of the leaf blades and internodes.
- Spider mite. This pest is too small to be seen with the naked eye. But its presence can be determined by two signs: small yellow dots appear on the leaf blade and a slightly noticeable cobweb is visible on the reverse side.
- Slugs. These pests very readily live in greenhouses where there is high humidity. They do not tolerate direct sunlight, so during the day they hide under leaves and stems.
When affected by various diseases, they are treated with drugs such as Fitosporin-M, Topaz, and Hom. As soon as the first signs of root rot appear, it is recommended to sprinkle the vine with earth at a distance of 10-15 cm from the main shoot. As a result, the lash will grow its own roots, which will allow it to be preserved even if the plant dies. If the plants have been severely affected by one of the types of rot, it is recommended to disinfect the soil in the fall, since the bacteria of this disease live in the soil. To prevent the appearance of fungal diseases of cucumber, they are treated with Bordeaux mixture.
To treat various diseases, cucumber lashes are treated with the drug Fitosporin-M.
Preventative measures against the appearance of aphids will be timely removal of various plant debris in which insect larvae settle. Treating cucumbers with infusions of various plants helps: tomato and potato tops, celandine, yarrow. From chemicals use “Fitoverm”, “Aktara”, “Iskra”.
Spider mites appear mainly in dry and hot weather, so as a preventive measure, water and spray the plantings in a timely manner. Plant dill next to cucumbers; it attracts ladybugs - the natural enemies of ticks.
If the spider mite infestation has already covered a large area, then you need to use chemicals fight, for example, “Fitoverm” or “Karbofos”. Summer residents who are categorically against chemicals can use a decoction of onion peels.
If there are only a few slugs, you can collect them by hand. Of the chemical preparations, the most effective is the drug “Thunderstorm”. You can also use folk remedies struggle. The solution helps very well ammonia, for 2 liters of water take 4 tbsp. processing is carried out at dusk.
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Weather conditions not suitable for growing cucumbers
This is the third reason why cucumber leaves wilt. It is practically irremovable and beyond the control of human actions.
If the cold snap is short-lived, for example, late summer frosts, then you can additionally insulate the cucumber plantings. If the whole summer is cold and cloudy, then you can no longer expect a good harvest.
Advice: timely preventive measures will help prevent the occurrence of most of the above causes of leaf wilting.
Follow the rules of crop rotation and do not plant cucumbers in the place where last year representatives of the same family grew - zucchini, pumpkins, squash.
Keep your area clean: it is in plant waste that most pests live and multiply.
If you have to prune cucumbers, use only clean tools; most pathogens travel well from plant to plant using pruners and garden shears.
1PoParnikam.ru
Cucumber leaves wither and dry out. Who knows what this is: some kind of disease or something else? If this is a disease, how to deal with it?
Zhanna S
Root rot, Verticillium wilt.
Fungal disease.
Factors that reduce plant resistance to root rot include:
* excessively frequent and abundant watering (reduces the amount of air reaching the roots);
* watering with cold water (10–11°C);
* drying the root system;
* high concentration of salts in the soil solution.
The soil should not be allowed to overheat above +28°C.
Feeding and watering should be moderate.
When the first signs of root rot appear, plants are rejuvenated:
the stem is lowered onto the soil and sprinkled with fresh soil to form a new root system.
After new roots appear (after 10–15 days), additional soil is added.
If the method does not help, you need to remove the plants along with a lump of earth.
For treatment, you can use biological products like Fitosporin.
Medet
Did you forget to water?
Star
It seems to me they just watered it in the heat and didn’t wait until evening
Maria
eo down syndrome
Alla Chul
It is very possible that earth ants have settled in the ground under the cucumbers. If this is so, then you won’t save the cucumbers until you poison them. But there are also diseases, root rotting due to waterlogging or watering with cold water, etc.
Kostenko Sergey
exclude watering with cold water, watering when the sun is actively shining (well, when it is already setting, but still high). try feeding it with nitrogen (I advise you to water it and spray it with 1 tbsp urea solution per 10 liters of water) - something similar worked for me. similar symptoms appear when plants are overly fed with phosphorus and potassium and with an acute nitrogen deficiency (often on light soils and when large amounts of rotted manure are added). and in hot weather, water twice - morning and evening
Larisa
I sometimes water the cucumbers with boric acid (5g of powder per 10 liters of water) as if spraying the plants. Helps. Good luck. Now we are already eating our cucumbers. Today I even closed two banks.
Invisible
THIS IS FUSARIA WILTER. This disease affects young and adult plants. In some cases, wilting can occur within one night. The fungus attacks the vascular-fibrous vascular bundles through which nutrients are supplied from the soil, releasing toxins, which causes poisoning of plants and their rapid death. The infection persists in the soil. Therefore, it is necessary to observe cultural rotation and change contaminated soil.
My cucumbers have this problem every year. And I can't do anything about it ((((
also read this http://www.ogorod.com.ua/-p385.html-sid=...
Why do cucumber leaves wither and turn yellow???
Oleg Shelest
There may be several reasons:
1. Spider mite. Against him, I would advise you to use chemicals. drugs actellik and thiovit jet. From biological products phytoverm.
2. Perenosporosis. Yellow spots appear on the leaves, then they cover the entire leaf and it begins to die. Chemical drugs that can be used against it are Ridomil Gold and Quadris. Biological products include epin extra and zircon.
3. Lack of Nitrogen. Feed the cucumbers with nitroammophos, and after a while organic. Gumi+ fertilizer. After feeding, wash these fertilizers off the leaves with water, otherwise they will get burned. You can also feed with Cytovit. It will also protect the plant from chlorosis, that is, iron deficiency.
By the way, if you use the biological preparations listed above, then do not be afraid to mix them together. From the moment the leaves appear on cucumbers, start using this combination to protect against pests and diseases: fitoverm + zircon or epin extra + cytovit.
Natalia
Maybe their fruiting period is over? Abundant watering and fertilizing with nitrogen fertilizers, urea, for example, can help. On a bucket of water sp. boxes
*-*
Perhaps there is not enough moisture, or maybe you are watering with cold water. Cucumbers love warm water. Another reason is that if you water in the heat and water gets on the leaves, then drops of water act like lenses and burn the leaves. Choose)))
Natalya Dubinina
In August the leaves always begin to turn yellow, this is a natural process!
maria_johansson
The tick ate all my cucumbers!
Lyudmila Grishaeva
If the nights are cold and yellow, aphids may attack.
Tatiana Surovaya
Possibly root rot.
Why do the first cucumber flowers (hybrids) wither and fall off after flowering? I grow it in a greenhouse. Or do they need to be cut off?
Svetlana Zapolina
Vegetable growers make the mistake of not pinching the shoots and the first flowers. This agrotechnical technique is needed to prevent excessive thickening of the stems and leaves, especially from below, and promotes the rapid growth of the main bud of the stem on which the crop is formed. Another mistake they make is that they don’t pinch off the side shoots. As a result, they grow and quickly fill the entire space of the greenhouse. The main stem begins to grow very slowly, and because of this, a lot of fruit will not be produced.
How should pinching be done correctly? In the axils of the lower 3-4 leaves, shoots and ovaries are completely removed and this is done as soon as possible in order to reduce the risk of injuring the plants. The shoot must be removed (broken out) completely, without leaving a stump. It is better to pinch the shoots in the morning so that the injury heals by the evening and does not become infected. Starting from the fourth node, the ovaries are not touched, but only the side shoots are pinched to one leaf. With this procedure, many people again make the mistake of trying to pinch not just one sheet, but at least two. As a result of such a mistake, the lashes with cucumbers will begin to hang down heavily, lie on the ground, become overly moistened and rot. Plants partially die. Remember: the lashes from below must be well ventilated!
Further pinching is carried out above the sixth leaf in the axils of the side shoots into two leaves, and only at the very top of the greenhouse the side shoots are pinched into three leaves.
Cucumbers like moderately moist soil. Simultaneously with the formation of plants, they are watered only with warm water, standing in the sun or indoors in the greenhouse. Some vegetable growers, considering cucumbers to be a moisture-loving crop (which is generally true), try to water the plants in the greenhouse as much as possible in the evening, and not in the first half of the day (as this should be done). But here lies one of the mistakes.
When excess moisture is created, rot and other diseases develop and pests, such as spider mites, appear. In addition, condensation (cold drops) forms on the inside of the greenhouse film at night. Trying to get rid of it, they ventilate the greenhouse well, making another mistake: a draft is completely contraindicated for cucumbers!
Gleb Navin
Are they self-pollinating?
Alexandra
They need to be removed up to the fourth sheet
Sergey Kalyakin
They may fall off for several reasons. The most common:
1. The variety is bee-pollinated (for open ground), and not parthenocarpic (self-pollinating).
2. Due to stress as a result of a strong night-day temperature difference. Cucumbers don't like this.
Lyudmila Levkina
If cucumbers are bee-pollinated, they are most likely not pollinated. For the greenhouse, it is necessary to select varieties that do not require pollination. Read the label carefully. Bee-pollinated varieties have male and female flowers. Women's with small cucumbers, men's empty. It is better to choose varieties with a predominantly female type of flowering.
Natasha
Hybrids do not mean parthenocarpic (self-pollinating), they are both bee-pollinated and self-pollinated, read, everything is written on the label. You can get your bearings by price: a bee.... is much cheaper. Well, you can lure bees into the greenhouse, but they will die.
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