Why zerovazhi cucumbers in the greenhouse yellow and what to do?

To enormous regret, gardeners have to face situations where the embryos of cucumbers grown in greenhouses from polycarbonate and other materials are yellow, dry and fall off.

You can prevent similar phenomena, exactly knowing why they happen and what to do about it. Experienced gardeners have a whole arsenal of effective means that allow you to solve the problem in a timely manner.

Possible reasons

Sources of thoughtfulness in question can be divided into three main categories. If future fruits are poorly tied on young cucumbers, and the wounds are too small and do not grow or deteriorate, then in the overwhelming majority of cases, they lead to this:

  • inappropriate conditions for the culture of culture in the greenhouse (greenhouse);
  • violation of the rules of care for young plants;
  • Diseases and pests.

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Rapid yellowing of the barbells are able to provoke many diseases. And leading positions in their lists occupy Bacteriosis. In addition, there are often problems due to the fact that the roots rot, that is, it is about such a dangerous disease as the root rot. At the same time, it is most often a long enough plant looks absolutely healthy except that he starts to push the tops a bit.

If analyze biological reasons, it is worth noting that the most common pests include:

  • curtain tick;
  • aphid;
  • flesh black;
  • Bellenka.

Of course, you need to know what to do to protect the ovary and provide a good harvest. At the same time, it is important to take into account the peaks of the activity of different harmful insects, due to which the embryos dry out, withering and falling out. Such periods fall, as a rule, in the middle of summer. For example, the wave waters in weeds and chooses the roar of the leaves for this. In the spring, the pest begins to spread around the site by a record pace.

Web tick can stay unnoticed long enough. But if his web appeared on the plants, they can die very quickly.

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Bad conditions

It is no secret that the full growth and development of cucumbers in the greenhouse provides for normal lighting, the optimal temperature regime, as well as the level of humidity. Ignoring one of these factors can lead to the fact that the ovary will begin massively yellowing. And first of all it is worth paying attention to the lack of lighting.

The shortage of sunlight inevitably leads to a violation of photosynthesis in the leaves of all plants. This, in turn, becomes the cause of fruiting problems. The cucumbers simply lack strength for the formation of full-fledged stocks, and they begin to reset the younger fruits. The lack of light most often is the consequences of a thick planting, as well as pollution of the greenhouse coating and its improper location on the site.

As practice shows, quite often inexperienced gardens seek to plant the maximum number of plants at the minimum area. Cucumbers in such conditions suffer from the shortage of both light and moisture, and nutrition. The settlement rate of the described culture is not more than 4 bushes per 1 square meter. When it deviates from it, it is recommended to shift the garden that the remaining bushes continue to actively develop, the yellowing of the string stopped.

Invalid are too high and excessively low temperatures. The norm in the case of cucumbers is considered to be the thermometer testimony in the range from 18 to 30 degrees above zero. In some cases, it is possible to increase the upper threshold for 5 units. No less destructive will also be sharp temperature fluctuations.

As a rule, a big difference between day and night indicators is characteristic of growing culture in open ground.

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

However, such problems may occur when using greenhouses. Most often it is observed in the spring, when the shelter is warmed up for the day, and at night, due to a sufficiently low air temperature, cold cools. As a result of banal hypothermia, cucumbers may suffer. To control the temperature mode, it is recommended to use special sensors. However, such equipment will affect the pocket not every gardener, and therefore many lovers prefer to use conventional thermometers.

The following reason for the problems under consideration is inappropriate norms of air humidity in the greenhouse. Optimal indicators in this case, it is customary to be 60-75%. Predictably cucumbers love the increased moisture content, as they have a tropical origin. At the same time, it is important to take into account that if droplets began to form on the walls, the condensate will inevitably appear on the leaves, which will lead to their boost and burns. Naturally, in such conditions will turn yellow and quickly determine the forming fruits.

With high humidity, the plant is forced to direct all the forces first of all for survival. But it should be remembered that events will develop in a similar way and with overly dry air in the greenhouse. Avoiding serious consequences, depending on the nature of the problem, the following actions will allow:

  • In hot weather it is necessary to spray the leaves of cucumbers, preferably twice a day, can also be placed in the greenhouse of water tank;
  • If condensate appeared on the inner surface of the shelter, it is highly recommended to remove it and regularly ventilated the room.

Yellow wounds can be the consequences of problems with pollination of plants. And the essence of the problem is in the wrong choice of variety. For greenhouse cultivation conditions, it is recommended to consider parthenocarpic varieties of cucumbers. Such an approach is due to the fact that these varieties are characterized predominantly female bloom, eliminating the need for insect participation in the process of pollination.

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

When landing with varieties pollinated by bees, it will be necessary to ensure their free access to plants. In addition to the fact that all doors and vents must be open, in the room there can be placed a container with a solution of honey or sugar syrup. Another effective means – laying around watermelon and melocy crust bushes. The minus of this method is that such a bait with a high probability will be interested in both bees and ants. Another way to solve the problem is manual pollination of plants. You can perform all the necessary operations with a soft tassel. It is to transfer pollen between male and female flowers.

In addition to the listed, the list of described reasons also includes Lack of crop rotation in greenhouse cucumbers used. If it will be grown exclusively the cucumbers, the soil will inevitably begin with parallel filling of the soil with pathogenic bacteria. Avoid problems, the list of which includes the appearance of yellow bands, will allow the alternation of cultivated cultures. Do it according to the same rules as in the open soil.

In some situations, the alternation is impossible, and the greenhouse is used only under the cucumbers. In this case, it will be necessary to change the fertile layer of at least 30 cm each year.

In addition, an important point is sowing siturates. After harvesting cucumbers, it is recommended to plant legumes, mustard or winter wheat. Late in the fall before flowering, it will be necessary to overcoat the Earth.

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Wrong care

Most often, the yellowness of the groes is the result of violation of the rules of care of cucumbers at different stages of plant development. It is important to take into account that the described culture can be extremely painful to respond to any deviations. And first of all it is worth emphasizing attention on the wrong irrigation. When irrigating the soil in the greenhouse, it is important not to ignore the following key points:

  • The temperature of the water used should be in the range from 22 to 27 degrees;
  • In the heat, the soil moisturizes daily, and with cloudy weather – with an interval of 3-4 days;
  • Consumption – from 8 to 10 liters for each adult bush.

Wriverers will turn yellow, and in some cases you can lose your crop at all if:

  • water cucumbers with cold water;
  • regularly overcook the land;
  • Do not provide a sufficient amount of moisture in the heat.

The following key factor is a violation of the rules of feeding. It is important to remember that the cucumbers are equally harmful both deficit and excess fertilizers. You can harm the urins, if you feed the soil, not considering the most important points.

  • The key element for normal culture growth is nitrogen. Ensure its content in the ground will help herbal infusions, as well as a solution of a cowboat in proportions 1:10 and urea. It should be reminded that it is possible to feed the plant only before the start of flowering.
  • The need for phosphorus, magnesium and potassium increases at the flowering and formation of fruits. From the moment of the origin of bud and until the fertilization completion is made every 2 weeks.
  • Parthenocarpic species are distinguished by special “voraciousness”. When leaving them, the feedback rate is doubled under normal weather conditions and 2.5 times in dry time.

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

No less critical error may be Rough loosening of soil. In an effort to maintain at any cost of the roariness of the soil, some gardeners neglect care. This often leads to damage and subsequent death of the root part. Predictable as a result of the plant’s further development in the plant lacks forces.

Another reason for the troubled trouble may seem at first glance. However, in practice, it can often negatively affect fruction. This is about untimely harvest. The fact is that fruit frills take a large amount of nutrients in a plant, which then trite does not reach the full development of new bandages. In this case, get rid of the latter will be easier. You can prevent problems if during the active ripening of cucumbers to shoot them every 2-3 days.

In addition to all already listed, it is necessary to focus On the harmful consequences of neglecting the procedure for the formation of cucumber bushes. As a rule, novice gardeners face similar problems. They are not recommended not to forget that when growing under the conditions of the greenhouse, the plant loses the ability to form independently. Considering this, you need to remove some. Competent execution of such operations effectively prevents the yellowing of the strings and their death.

Cucumber bushes form in several stages. At the same time, the nuances of each of them are determined by the varietal features of culture. Some varieties are distinguished by the fact that they themselves grow very neatly with a relatively small number of lateral shoots. In other words, they do not grow up and, therefore, send all the forces on the formation and development of uncess and fruits.

At the same time, other representatives of the family grow with a real scale. And if in such situations not to carry out steaming, it will appear too much embryos, some of which will inevitably yellow and quickly fall.

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

How to deal with diseases?

In the manifestation of symptoms of diseases in the form of yellow barriers, it is necessary to immediately take effective measures. In such situations, both folk and modern chemicals are successfully used. Treatment, depending on the causes of the problems, provides for the following processing:

  • from Rotina – drugs, as part of which there is copper (“Ordan”, “Abiga Peak”, “Hom” and others);
  • With cucumber mosaic – elimination of infected shoots and bushes, it is important to remember that the last stage of this disease is the yellowing of the barriers;
  • With colaporiosa – Spraying with such proven solutions as “pseudobacterin” and “Gamair”.

Another dangerous disease is ill bacteriosis. It develops, as a rule, with a combination of two factors at once: increased humidity and thick planting of cucumbers. It is worth recalling that the first and explicit sign of bacteriosis is the appearance of shapeless spots on the foliage. The next stage in the development of infection is the yellowing and fast wiping of color and barring. The affected elements are immediately removed, and the sections of the sections are treated with a weak solution of potassium permanganate.

Preventive spraying will help prevent the development of this dangerous disease. At the same time, the combustion bag (1%) and suspension of chlorocyssi (0.4%) are successfully used.

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

For rapid treatment of bacteriosis, such effective means are used as:

  • “Pharmiode”;
  • “Aktellik”;
  • “Bayleton”;
  • “Phytolavin-300”;
  • “Climate”;
  • FAS.

In addition, it is important to pay attention to such a misfortune like a mildew. It is the consequence of excessive humidity in the greenhouse, as well as sharp temperature fluctuations and thick planting of plants. To prevent the yellowing and death of nascent fruits in such situations, it is necessary:

  • First, for a week, cease irrigation and fertilizer;
  • Conduct the treatment of affected areas of plants using warm solutions “Oxychoma” or “Topaz”.

Another reason for the troubled trouble is the soil fever as a result of excessive irrigation. Correct the situation in such cases can be the following manipulations:

  • decaying in beds in the greenhouse of adsorbents (ordinary moss fits well), which quickly and effectively absorb unnecessary moisture;
  • temporary (before drying up the upper layer of soil) the abolition of waterings;
  • Organization of high-quality ventilating greenhouse;
  • Removing old leaves at the bottom of the bushes.

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Fighting pests

One of the most dangerous enemies of cucumbers is a web tick. That is why the fight against this pest is recommended to pay special attention. It shams, as a rule, on the bottom side of the leaves and actively sucks the juice of the plant. The sign of infection will be the appearance of a characteristic web, and get rid of her owner should immediately. At the initial stage will be most effective:

  • Soap solution, which includes 3 st. L. crushed economic soap and 10 liters of water;
  • Infusions of Ceeshela, dandelion tops, as well as yarrow;
  • onion infusion, for its preparation, you will need 80 g of crushed meat and 10 liters of water, the day is insisted;
  • Tincture on garlic – 50 g of chopped product on 20 liters of water, insist this solution for 24 hours.

Effective preventive measure when dealing with this tick will be deep peopling of soil in the greenhouse. In parallel, steaming and damping soil. Cardinal Method – Full Substrate Replacement.

Another dangerous enemy of cucumbers is a wave. In this case, it is initially necessary to recall that the pest has many natural enemies. Quick enough to get rid of the Tly in the greenhouse will help:

  • ladybugs;
  • Zlatlazki;
  • Mukho-Burning;
  • Underflows;
  • Predatory wasps.

As practice shows, The most dangerous for Tlima and, accordingly, the most effective in the fight against it are ladybugs. They are gently assembled throughout the plot and transported to a greenhouse, releasing as close as possible to the affected zones.

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

The next effective way to get rid of Tlima, due to which yellowing the wounds is In planting plants capable of scareting this pest. It is known that he does not tolerate the majority of garden colors, For example, velvets, as well as the following herbs:

  • mint;
  • mustard;
  • kinza;
  • basil.

Such natural dischargers are planted both around the perimeter of the greenhouse, and directly between the beds with cucumbers. In addition, many experienced gardens are successfully used by some info.

  • Low. Bucket half fill onion husks and poured it with water. During the day, this solution is insteaded by direct solar rays. Then it is filled and diluted with water to a total volume of 10 liters. Use this tool for both spraying and watering.
  • Operman. Chopping or small as much as possible to cut 1 kg of bitter pepper and pour the resulting mass three liters of water. Cook it is necessary on slow heat for one hour. The prepared mixture is cleaned in heat for 48 hours. The next stage is the focus of the means, the dilution of its water and use. On 5 liters of water quite a half-table of the list of. By the way, it can be stored in the refrigerator, spill on dark bottles or banks.
  • Garlic-dandeller. It will take half aquilogram of dandelion trees (you can with roots). The entire assembled material must be crushed, and after grasping 3 medium in size of garlic head. The resulting mass in a bucket or any other comfortable container is poured with warm water and mix well. It remains only after two hours to strain the solution and spray them the affected tint cucumber bushes.

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Prevention measures

Analyzing the most important and effective ways to prevent the appearance of yellow barriers, it is worth considering that it is initially necessary to level the temperature differences in the greenhouse. For this you need:

  • On hot days to organize good ventilation of the room;
  • When cooling the hot stones to the greenhouse at night;
  • If a sharp decrease in temperature is predicted, cover the bushes with nonwoven material for insulation.

It is also important to remember that Protractable cooling are destructive for the described culture. Prevent extremely negative consequences will allow the construction of a temporary shelter from the film. Another effective measure is the introduction of growth stimulants that will increase the immune system of plants. Another important point is to prevent the resellers of varietal cucumbers with hybrid specimens.

Naturally, you should not forget about constant control of the level of humidity of air and soil in the greenhouse, as well as the rules for making different feeding.

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

Why zerovazhi cucumbers in the greenhouse yellow and what to do?

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