Many are familiar with the situation when, when growing cucumbers, instead of many fragrant fruits, one has to be content with two or three incomprehensible shapes. Although everything was done correctly: the seeds were planted on time, the place was suitable ... But powerful stems with leaves and flowers, but without fruits, turned out. And the question arises: "Why are there a lot of barren flowers on cucumbers?" To find the cause, you need to know the agrotechnical subtleties that should be used when growing this vegetable.

Basic requirements for growing cucumbers

Surely not everyone knows that the cucumber is a tropical plant, therefore, it is demanding on heat, moisture and sunlight. These factors most often affect the ovary of flowers, and with a lack of one of them, empty flowers form on cucumbers. First, it should be noted that the formation of the fruit comes from the female flower (pistil), and the male flower (stamen) is necessary for pollination. Its most common name is empty flower.

On the stem, male flowers are formed first, then they alternate with female ones. On the lateral processes and closer to the top of the stem, the number of pistils increases. The formation of flowers is influenced by growing conditions, quality and variety of seeds. When choosing a place, one must proceed from the fact that this plant is sun-loving, and in a shaded place there will be a small number of ovaries. Many are interested in why there are a lot of empty flowers on cucumbers if all agrotechnical requirements have been met. It is worth noting that weather conditions also have an impact on the development of a vegetable.

The laying of pistils is influenced by temperature during the day and at night (the higher they are, the more actively female flowers are formed), the presence of nitrogen in the soil and the amount of sunlight. If the weather is predominantly cold and damp, there is no balance between the applied fertilizers, and the plants are planted close to each other, then mainly stamens grow. In addition to weather conditions, there are many factors that affect the formation of male flowers.

Seed selection

When choosing seeds, one should take into account not only their variety, but also their age. 80% of all gardeners who ask the question why there are a lot of empty flowers on cucumbers planted fresh seeds. This is the main reason for infertility. For a good harvest, seeds should be planted with a 2-4 year shelf life. If it is not possible to wait, then the seeds must be subjected to heat treatment. The best option is to put it in a cloth and hang it near the heating system for 3 months. So the seeds "grow old", increasing the yield.

Empty flowers on cucumbers: causes

The predominance of male flowers can provoke irrigation of seedlings with cold water. This is absolutely impossible to do. The water temperature should not be lower than 20 degrees, especially in the first time after planting seedlings or the appearance of sprouts. Plants should not be watered late in the evening either. It is important to observe the watering regimen. During the growth of both the stem and the fruit, watering should be sufficient (every day), but during flowering it is necessary to limit the flow of moisture, thereby provoking the formation of female flowers. If you use warm water and follow the irrigation regime, the question of why there are a lot of empty flowers on cucumbers will lose its relevance.

By pinching the top of the main stem, the development of female flowers with ovaries can also be accelerated. With this method, lateral shoots begin to actively grow, on which pistils are mainly formed.

Do cucumbers need empty flowers?

Many gardeners, not knowing the reason why cucumbers have a lot of empty flowers, begin to remove it. At the same time, they are greatly mistaken when they believe that by removing male flowers, they will provoke the formation of female ovaries. Without an empty flower, full pollination is impossible. After a few days after the appearance, they themselves turn yellow and fall off.

Why are there a lot of barren flowers on cucumbers in a greenhouse

Often, when growing vegetables in a greenhouse, a situation arises when cucumber seedlings grow well, forming a strong stem and large leaves, but there are no ovaries. As a rule, the main reason is that pollination did not occur. There are varieties that form fruits without pollination, but the bulk are bee-pollinated species. When growing cucumbers in a greenhouse, it is necessary to open it, allowing insects to penetrate inside. You can attract bees by placing bouquets of dandelions in the greenhouse or by sprinkling the leaves of the plant with a weak solution of honey and water. You should not leave a container with sugar syrup or honey, because the bees, having accepted the "treat", will not pollinate the flowers themselves. You can also artificially pollinate the pistils, but this process is quite laborious, requiring certain knowledge and skills.

Influence of weather factors on the growth of greenhouse vegetables

However, there is another reason why cucumbers have a lot of empty flowers. Very often, on hot summer days, the temperature inside the greenhouse reaches high values. This contributes to the fact that the formed ovary turns yellow and disappears. Therefore, to obtain a good harvest, it is necessary to ensure that the temperature does not exceed 35 degrees.
High humidity and lack of nutrients in the soil also become the reason why fertilization does not occur. After the formation of ovaries, greenhouse plants must be fed with organic fertilizers once a week, and air humidity during the entire growing season should not exceed 90%.

syl.ru

How to care for cucumbers in a greenhouse.

After the summer resident tried to grow cucumbers in an open garden and once decided to purchase a greenhouse, he has a logical question: “How to grow cucumbers in a greenhouse?”. How is watering different from what was with open ground? How to form them correctly? And why do they suddenly start to bitter? Lots of nuances to consider.

How to start caring for cucumbers in a greenhouse?

From the preparation of the greenhouse in autumn. First you need to carefully process the structure itself. Take out the remains of any plants, and dig the soil deep.

All structural elements must be disinfected with a bleach solution. For this purpose, 350 g of the substance will need to be diluted in a bucket of water. This mixture must be prepared 3 hours before processing.

If cucumbers were grown in one place for two years in a row, then the soil also requires bleaching. It needs to be sprinkled on the bed at the rate of 150 grams per square meter.

Another option for enriching the land is its complete replacement. To do this, you need to prepare a mixture of peat, humus, sawdust and soddy soil. All ingredients must be taken in equal proportions.

In the spring, fertilizers need to be applied for cucumbers; rotted manure or humus is supposed to be scattered in the greenhouse. It will require 12-14 kg per 1 m2. This top dressing should be done a week before planting seedlings.

Continuation in planting seedlings of cucumbers

Without this moment, it will not be possible to understand how to properly care for cucumbers in a greenhouse. First, a few words about seedlings. It should already have 3-4 true leaves.

Cucumber beds should be about a meter wide and 25 cm high. Holes should be placed every 30 cm. In order for the cultivation to be healthy, each recess must be processed. Shed with a weak warm solution of potassium permanganate. And then just warm water.

After that, install peat cups with seedlings of cucumbers inside the holes. Or carefully remove with the ground from the insoluble, so as not to damage the roots. The entire ball or cup must be completely immersed in the soil. At the end, the seedlings need to be watered with warm water (temperature about 23 degrees Celsius).

How to water cucumbers in a greenhouse?

Experienced gardeners give several recommendations. The first of them is connected with the fact that watering cucumbers in a greenhouse should be done only with warm water. Moreover, it should not pour on the roots, but along specially created grooves between the bushes. This is because the soil around the stem must always remain dry. So the plant will not be susceptible to diseases.

The third determines how often you need to water the cucumbers in the greenhouse. After planting seedlings in a polycarbonate greenhouse, this action is performed every three days and about 4 liters of water are consumed per square meter. This process continues until flowering and the formation of ovaries. Then the volume of water doubles. And the frequency of watering depends on weather conditions. It can be daily or every other day.

What is the feeding of cucumbers in a greenhouse?

For proper nutrition, these plants need organic fertilizers. Their role can be played by: rotted manure, humus and compost, chicken manure and mullein.

Throughout the season, it is necessary to feed the cucumbers with mineral components several times. What you can feed cucumbers in a polycarbonate greenhouse can be written in the following list.

• ammonium nitrate;
• superphosphate;
• nitrophoska;
• urea.

What elements make up the ideal microclimate for growing greenhouse cucumbers?

• Ventilation. Cucumbers are demanding on drafts. They don't tolerate them. For ventilation, you need to open only one side of the polycarbonate greenhouse.
• Air and ground temperature. Cucumbers do not thrive if exposed to extreme temperature fluctuations.
• Air humidity. It directly depends on temperature. The hotter, the higher the humidity should be.

How to form cucumbers in a greenhouse?

This is one of the most important points that affect the cultivation of cucumbers. To form a cucumber bush in a greenhouse, you will need to perform several steps. In this way, you will be able to achieve maximum yield.

1. the lower level forms the first 20 cm, it is supposed to remove all lateral shoots on it;
2. then there are three zones with fruit-bearing stepchildren; the first one ends at a height of 90 cm from the ground, here one leaf and one ovary should be left on the stepchildren;
3. the second continues up to 130 cm and leave 2 leaves and ovaries already;
4. the third zone allows you to leave 3 leaves and ovaries.

On the other hand, it is possible to carry out such a pinching of cucumbers in a greenhouse, in which a compact bush is obtained:

• all side shoots from the first 4 sheets must be removed;
• from the next two, leave one ovary with a leaf;
• then there are two more shoots of 2 leaves and inflorescences;
• after that, pinching can be stopped.

How to tie up cucumbers in a polycarbonate greenhouse?

The answer to this question will be a listing of all possible methods for tying cucumbers.

With vertical supports

They are made in the form of the letter "P". Their maximum height is 2 meters. To the horizontal bar, you need to tie a twine or rope, to which each cucumber bush is attached. So each plant has its own individual support. This makes caring for cucumbers very convenient.

With horizontal supports

For such a garter of cucumbers in a greenhouse, two metal poles must be installed along the edges of the beds. They rely on pulling several rows of wire or a strong rope. You can combine the horizontal and vertical garter methods and make a mesh for which the antennae of cucumbers will cling to as they grow.

blinding method

It consists in tying up the main vine. And then cut off everything that is up to a height of 50 cm above the ground.

The method of forming a bush in several shoots

It starts in the same way as tying cucumbers in a greenhouse according to the previous method. You need to attach the central vine. Then let the side lashes grow freely until the first ovaries appear. Then they are recommended to be tied in the central one. The angle between the shoots and the stem cannot be less than 60 degrees.

Growing and pinching cucumbers in a greenhouse made of covering material.

Problems that a summer resident may face while caring for cucumbers

Cucumbers do not grow in a greenhouse

Plants do not get sick, they have active growth. But they are few and they are small or do not develop at all. The question arises: "Why do cucumbers grow poorly in a greenhouse?". Most often this is due to the fact that varieties are selected that require pollination by bees. To avoid this, you need to choose self-pollinated cucumbers.

If this was not achieved at the seed selection stage. The plants are already growing. Something urgently needs to be done. For example, attract bees. Sweet water is suitable, which you need to spray all the cucumbers.

If the bees have not arrived, then you need to be one yourself. That is, pick a male flower (the one without an ovary) and touch it to all female ones. This is how forced pollination will be carried out.

Empty flower on cucumbers in a greenhouse

What to do if such a situation arises when ovaries do not form? Understand the cause and eliminate it. The reasons why cucumbers are not tied in a greenhouse can be:

• the youth of the seeds, it is easy to avoid if you harden them with high temperatures;
• an excess of nitrogen, urgently feed the plant with superphosphate;
• use for irrigation of cold water;
• plants planted very densely;
• the earth is flooded with water.

Cucumber leaves wither in the greenhouse

• High air temperature in the greenhouse. Because of this, they are unable to absorb moisture from the soil.
• Insufficient watering.
• Small amount of nutrients in the ground. Most often - nitrogen. You can quickly make up for its deficiency with the help of foliar top dressing with a solution of urea.
• Direct sunlight.
• The appearance of pests. To prevent the appearance of aphids, it is recommended to plant cucumbers near garlic.
• The spread of the disease. Spraying with a solution of potassium permanganate and chalk will help prevent their appearance.

Bitter cucumbers in a greenhouse

There are several reasons why cucumbers are bitter, and it does not matter in a greenhouse or open field. The first repeat those that were indicated in the previous paragraph.

• Too little or too much water.
• Deviation from a sufficient level of nutrients.
• Violation of natural lighting cucumbers. They should be exposed to the sun, but not burned by its rays.

The last three reasons:

• violation of the level of acid-base balance of the soil;
• creepers of cucumbers are squeezed or twisted;
• excessive closeness of the fruits, they are difficult to access.

Cucumbers inside are empty

In the greenhouse there is such a misfortune. It leads to an unbalanced content of trace elements in the soil. If there is too much nitrogen compared to potassium, phosphorus and calcium, then voids cannot be avoided.

If cucumbers are regularly fed with mineral complexes, and voids still form, then it is worthwhile to objectively assess the amount of water used for irrigation. Cucumbers with voids signal its lack.

And the last reason is the development of a viral disease.

superda4nik.ru

Problems with the growth and fruiting of cucumbers in a greenhouse: why they don’t grow, why they don’t bloom, why there are no fruits, why there are few fruits, ways to fix the problem, video

To answer these questions and understand what to do in each specific case, it is necessary to clarify some specific features of this vegetable crop and the optimal conditions for growing cucumbers in a greenhouse or greenhouse. In addition, everyone knows that in protected ground cucumbers, as a rule, develop quite quickly and bear fruit abundantly, and few greenhouse cucumbers are formed in extremely rare cases.

Why greenhouse cucumbers do not grow

It is simply impossible to give a definite answer to such a question. There may be several reasons for the slow growth of a greenhouse vegetable, among which the most likely are:

• lack of pre-sowing treatment with growth stimulants or insufficient processing of seed material;
• an error in the timing of sowing seed material or planting seedlings. The main period of such work should fall on the period when the average daily temperature will be at least fifteen degrees Celsius;
• cucumbers grow slowly if insufficient or inadequate plant nutrition is performed during the growing season. The main signs of such a cause are the deformation of fruits with a lack of nitrogen and a change in the color of plants with a lack of potassium in the greenhouse soil;
• there is no control of the ventilation mode, which provokes overheating of the air masses in the greenhouse and inhibition of the growth of vegetable crops;
• insufficient moisture or inadequate irrigation of plants in the greenhouse causes a significant slowdown in the growth of cucumbers, and with a critical lack of moisture, the plants may die.

Planting seedlings of cucumbers should come at a time when the average daily temperature is not lower than fifteen degrees Celsius

You may also be interested in an article in which we talk about the main diseases of greenhouse cucumbers and how to deal with them.

Why don't cucumbers bloom?

In a greenhouse, it is extremely rare that cucumbers do not bloom or flowers form in small quantities. Much more often, a gardener is faced with a problem when there are no ovaries on the flowers or they fall off. The conditions for the growth of heat-loving vegetable crops in a greenhouse, as a rule, are close to natural, and even flaws in the implementation of agrotechnical measures and microclimate disturbances cannot completely deprive cucumbers of flowering.

However, if such a problem is still observed, then the cause may be the underdevelopment of weakened plants or an insufficient temperature regime, which provokes a stop in the growth of cucumbers. Such troubles can be easily dealt with if you do regular plant nutrition and treatment with growth biostimulants, as well as stimulate flowering and ovary formation with special means.

The gardener is faced with a problem when there are no ovaries on the flowers or they fall off

Why are there no fruits?

The absence of fruits on cucumbers in a greenhouse belongs to the category of fairly common problems for beginner gardeners. Most often, this situation develops as a result of the following reasons:

• poor quality of seed material, as well as the wrong choice of cucumber variety for cultivation in protected ground conditions;
• pre-sowing treatment and hardening of seeds by means of special preparations, as well as negative or variable temperatures, have not been carried out;
• an excess of nitrogenous fertilizers in the greenhouse soil, which cause the rapid growth of exclusively lashes, as well as leaves and provoke the formation of barren flowers;
• there is no full-fledged plant care, including the entire necessary set of agrotechnical measures;
• delay in the formation of female-type flowers as a result of the use of low-temperature water for irrigation;
• violation of the moisture regime, characterized by an excess of irrigation or lack thereof.

It should be remembered that by planting in greenhouses and greenhouses not parthenocarpic, but bee-pollinated varieties, as well as hybrid plants, the gardener dooms himself to receive a meager harvest.

How to grow cucumbers (video)

You can also find out why there are a lot of empty flowers on greenhouse cucumbers.

Why are there few fruits

There are several reasons why cucumbers do not grow well, and with abundant flowering, too few full-fledged fruits are formed. The most basic of them are the following violations of the regime of keeping and caring for plants in a greenhouse:

• too high for the growth of cucumbers (above 30 ° C) air and soil temperature in the greenhouse;
• very high rates of relative humidity, which exceed ninety percent;
• varieties and hybrids with a purely female type of flowering require the presence of pollinating insects, which may not get into the greenhouse in conditions of a long cold snap;
• a significant number of empty flowers reduces the yield of cucumbers in the greenhouse to the maximum and the situation can be corrected only by oversowing pollinating varieties, the number of which should not be less than ten percent of the total volume of plants grown in the greenhouse;
• irregular collection of ripened fruits is able to restrain the pouring of new ones and provokes a significant depletion of the vegetable crop;
• lack of nutrients in the greenhouse soil, which is especially strong when growing modern hybrids with a beam type of fruiting.

Irregular collection of ripened fruits can inhibit the filling of new ones and provoke the depletion of a vegetable crop.

Troubleshooting

• Sowing cucumbers is best done with seeds of a three-year shelf life, since it is precisely such seed material that has excellent germination and cucumbers bear fruit abundantly. In addition, plants grown from such seeds form female flowers much earlier, which stimulates the early formation of ovaries on the lower part of the cucumber bush.
• If your own seeds are used to grow cucumbers in a greenhouse, then they must be properly processed before planting. To this end, it is necessary to use the method of thermal stimulation, which allows you to "age" the seeds and increase their germination and yield.
• Consistently good results are obtained by pre-sowing soaking of seed material in solutions of special factory-made stimulants.
• Perfectly affects the growth, development and formation of cucumber ovaries, the introduction of organic fertilizers into the planting holes with a small amount of superphosphate.

Cucumber seeds of a three-year shelf life have excellent germination

• A significant amount of empty flowers can be eliminated with the proper formation of bushes and timely pinching of the top of the main stem. This method causes the growth of lateral shoots, which form a significant number of female-type flowers.
• A delay in the formation of female flowers and an insufficient number of ovaries can be provoked by irrigation using cold water. The use of warm water for irrigation of plants is especially important at the stage of germination and after transplanting seedlings to a permanent place in the greenhouse.

It should not be forgotten that the cultivation of any vegetable crops, including cucumbers, requires regular and thorough inspection of plants for damage by pests or diseases that can adversely affect flowering and fruiting.

You can also learn how to get rid of ants in a greenhouse by reading the related article on our resource.

How to maximize the fruiting of cucumbers (video)

Growing cucumbers in greenhouses and greenhouses is possible not only for experienced gardeners, but also for beginners. This vegetable crop is very responsive to proper care and timely feeding. Subject to the conditions of temperature and humidity, regular weeding and loosening, as well as timely feeding and watering the plants with warm water, a rich harvest will not keep you waiting, and the fruiting period will be as long as possible.

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MoyaTeplica.com

CUCUMBER PROBLEMS ... Often gardeners complain: "There are no cucumbers, only barren flowers." ..

What to do in this case?

What are the reasons for the continuous flowering of cucumber plants with barren flowers alone?

And are they needed at all, these empty flowers. First of all, a significant delay in the appearance of female flowers on cucumber plants and, consequently, late fruiting, lies not at all in barren flowers, but in the quality of the cucumber seeds themselves. If you did not listen to the numerous recommendations and sowed fresh cucumber seeds, then powerful plants that have grown from them first form many male flowers - empty flowers, and only then do female flowers appear. A completely different picture if you sowed cucumber seeds two or three years ago. On such plants, female flowers are formed simultaneously with male or even earlier than male. But now it is not early spring, but the very height of summer, and therefore it is too late to talk about the quality of seeds and how to fix it.

Another reason for the abundance of barren flowers and the absence of female flowers is the presence of a very large amount of nitrogen fertilizers in the soil, which also causes the rapid growth of lashes, leaves, and these same barren flowers. In this case, it is very useful for plants to feed with fast-acting phosphorus fertilizers, for example, superphosphate extract (2 tablespoons per 10 liters of water) or an infusion of ordinary wood ash.

The third reason for the delay in the appearance of female flowers is watering the plants with very cold water. The water temperature for watering cucumbers should not be lower than 25 ° C and must always be higher than the soil temperature.

The next reason for "barren abundance" is a large excess of moisture in the soil. Dry the soil on the cucumber bed for a few days. As soon as the leaves on the plants are slightly withered, female flowers will immediately appear. But do not overdry the plants, this will be another extreme.

And if all this does not help, then pinch the top of the main stem of cucumber plants, regardless of the number of leaves on it. Such pinching stops the growth of the whip, causes the accelerated development of axillary shoots and female flowers - with ovaries.

Well, what about male flowers - barren flowers?

A big mistake is made by those gardeners who remove all barren flowers, mistakenly hoping that this will cause the growth of female flowers. There is no benefit from their removal, and it is really possible to worsen the conditions for pollination of female flowers. Empty flowers on plants themselves will quickly turn yellow and fall off.

In the role of a bumblebee - a gardener.

Often, especially in film greenhouses, it happens like this - the plants grow well, the lashes are large, the leaves are large, there are many female flowers, but there are no cucumbers. Why does it happen? And because the pollination of flowers did not occur. There are so-called parthenocarpic varieties and hybrids that form fruits without the participation of insects, without pollination. But most varieties and hybrids are bee-pollinated. In them, if pollination has not occurred, the ovaries will last 3-5 days, then turn yellow and fall off. When growing such varieties, it is necessary to have bees or open a greenhouse, then the insects around will fly there. But the owners can also help such cucumbers in pollination. The best time for artificial pollination is from 9 to 12 noon. The process of pollination is carried out as follows. They pluck the male flower, pluck the petals, check the quality of the pollen. To do this, touch the tips of the stamens with the back of your hand. If the pollen is smeared, then it is ready. Then the male flower is put into the female flower so that the pollen from the stamens of the barren flower gets on the stigma of the female flower. It will be better if you touch a female flower with two or three male ones. If you want bees to help you with pollination, then put bouquets of flowering dandelion or perennial onions in the greenhouse. To attract them, plants are sometimes sprayed in a greenhouse with a very weak solution of honey. But you can not put honey on a saucer to attract bees to the greenhouse. The bees will take away the honey, but they will not “work” with the flowers.

Why don't ovaries grow?

This is a fairly common occurrence, especially in hot weather in film greenhouses. At the same time, the ovaries do not grow at first and gradually begin to turn yellow, then quickly dry out and fall off. What's the matter? And the fact is that there was no fertilization. There are several reasons for such an unpleasant phenomenon: - too high air temperature in the greenhouse (over 35 ° C); - very high relative humidity (over 90%); - lack of insects due to prolonged rainy and cool weather or strong winds (see above); - a significant lack of nutrition in the soil, especially in modern varieties and hybrids with beam fruiting. At the same time, 1-2 fruits grow, and the rest dry up and fall off. If the plants are weak, and there are many ovaries, then they are fed with mullein infusion with the addition of urea.

Why did ugly cucumbers grow.

Cucumbers are very demanding on the availability of sufficient nutrients in the soil, but they tolerate an increased concentration of fertilizers in the soil worse than other vegetables. Therefore, they must be fed more often than other vegetables, for example, once a week, but with relatively small doses of mineral fertilizers. The cucumber (fruit) itself “signals” the lack of one or another nutrient in the soil especially convincingly. You just need to learn to "speak" with him in the same language.

With a lack of nitrogen in the soil, the fruits, regardless of the variety, acquire a light green color, the upper part of the fruit (where the flower was) is narrowed, pointed and often bent, like a beak, the cucumber resembles a conical carrot in shape. At the same time, the lower leaves turn yellow, the growth of stems and side shoots in plants is delayed. And if the leaves and lashes of plants, on the contrary, grow wildly and have a dark green color, then there is an excess of nitrogen in the soil. In this case, it is necessary to immediately feed the plants with superphosphate or wood ash, otherwise you will not see a cucumber crop, because. there will be only leaves.

With a lack of potassium in the soil, the fruits of cucumbers are narrowed towards the stalk, and at the top, regardless of the variety, they are spherical in shape and are very similar to an ugly green pear. At the same time, a light border appears along the edges of the leaves (starting from the bottom), in the heat the plants may fade slightly.

If there is little phosphorus in the soil, then the growth of the lashes slows down, the leaves become smaller, turn dark green and dry quickly. All these signs will tell you the composition of fertilizers for subsequent top dressing of cucumbers.

If the fruit is narrowed in the middle and has a pronounced "waist", then this is due to a large difference in day and night temperatures or due to watering the plants with very cold water. And if the cucumbers are curved and have an irregular arched shape, then this happens when the soil is very dry or when the plants are watered very unevenly.

How to prolong the fruiting of cucumbers?

By the beginning of August, the first abundant wave of fruiting of cucumbers basically passes, their leaves become rough and prickly, in some places powdery mildew appears on them. At this time, urgent assistance to plants may be required. It is necessary to immediately carry out foliar feeding of plants with a solution of urea (0.5 tablespoons per 10 liters of water). After such feeding, the leaves of the plants will again become soft, photosynthesis will increase in them. And the powdery mildew that appeared on them in the initial stage is very easy to suppress with special preparations. Look closely at the soil of the plants. By this time, it has become very dense, but it should not be loosened, since it is easy to damage the root system of cucumbers. The soil must be watered and mulched with humus, in extreme cases, peat, grass or sawdust. After that, the plants quickly form new suction roots, the growth of fruits will increase. But soon, on plants where the lower tier has finished fruiting, the leaves will turn yellow and the stems will be bare. If the weather still allows, try carefully lowering the lashes a little down, bending the lower bare part of the stem to the ground or curling it into a ring and covering it with humus. But all this must be done before watering, while the stems are soft, after watering the lashes become very fragile and break easily. And, of course, at this time, the plants must be intensively “fed” with a solution of mullein with the addition of urea and ash. And what they need - the plants will tell you themselves, you just need to follow the shape of the fruit.

Why is cucumber so bitter?

Gardeners very often complain that cucumbers are bitter. Moreover, this bitterness is concentrated under the skin and is not present in all cucumbers. Basically, this bitterness is due to the content in the fruits of the substance cucorbetacin, which has an antitumor effect. This substance is present in any cucumber in very small quantities. But when its concentration in the fruit increases greatly, the cucumbers begin to taste bitter. Its presence in cucumbers is explained mainly by the hereditary properties of individual varieties. They are predominantly old varieties. However, the appearance of bitterness in cucumbers is also affected by growing conditions - high temperature in the greenhouse, lack of moisture in the soil and in the air, watering with cold water, low air temperature in sunny weather, the wrong composition of fertilizers, i.e. completely different situations. Fruits grown on dry beds in hot weather are distinguished by a particularly bitter taste.

How to avoid this undesirable phenomenon?

First of all, probably, to plant modern varieties and hybrids of cucumbers containing significantly less cucorbetacin. It is also important at the same time to strengthen the immune system of the plants themselves by spraying them with anti-stress preparations "Epin-extra", "Novosil" or "Aurum S". Some gardeners have an opinion that the accumulation of bitterness in the fruits is facilitated by their careless collection, which allows turning or damaging the lashes. Whether the last statement is true or not - check for yourself in your greenhouse.

Why did the cucumber overgrow?

Cucumbers should be harvested regularly as they ripen, while the fruits are still small, crispy, and they contain small, tender seeds. To do this, they are cut off with a knife every two days or plucked very carefully so as not to damage the lashes of plants, as just mentioned above. If you collect cucumbers less often, they will quickly outgrow. This immediately causes a delay in the growth of subsequent ovaries and a general decrease in the yield of cucumbers. In addition, overgrown cucumbers are less tasty, their skin coarsens, their seeds increase in size and become more rigid.

How to defeat the spider mite?

The spider mite is the main pest of cucumbers. They are very small and only visible under a magnifying glass. But if you have good eyesight, then they can be seen on the back of the sheet in the form of rapidly moving dark dots. Most gardeners use an infusion of garlic against spider mites. This is an effective remedy. But at the same time, spraying must be carried out on the underside of the leaves, where pests “live”. Much more convenient and effective are modern biological preparations - "Fitoverm", "Agravertin" or "Iskra-bio". These preparations are quickly absorbed by the leaf and within 20 days protect cucumber plants from all sucking and gnawing pests. Having tasted the "treats", the pests die in two days. These drugs are absolutely safe for birds and predatory insects. People can, without any harm to health, eat plants two days after they have been treated with these drugs.

http://pallase.jimdo.com/c-a-d/tree-pruning/cucumber-yard-mystery-garden/

A lot of empty flowers on cucumbers?

Boris Stepanov

Pinch the main lash after 4-5 leaves. Try not to water for 2-3 days. The daytime temperature will drop - they will be better tied. That's right, at a temperature of +30 and above, pollination does not occur, and even parthenocarpic cucumbers have one barren flower. In this case, no Ovary will help.

Shuravi

Check the temperature in the greenhouse, at T above 30 pollen can be sterilized.

◄non-GMO

there is such a thing, "Ovary" is called. Tried - excellent, even in the heat. There are different ones for cucumbers and zucchini, for tomatoes, and for peppers.

Irina Nekrasova

Pinching and Ovary are good remedies, but for fruit growth, cucumbers, like tomatoes, need potassium. After treatment with Ovary, feed them with potassium sulfate.