The ovaries of cucumbers turn yellow in the greenhouse and open field: what to do, how to treat

It is important to figure out in time why the ovary of cucumbers turns yellow and falls off. This will save the crop and preserve the taste of the fruit. There may be several reasons, mostly it is either improper care or infection with some kind of infection.

Why do cucumber ovaries dry in a greenhouse

It is not always possible to avoid problems if all agrotechnical requirements are met. There are several main reasons why the ovary of cucumbers in a greenhouse may turn yellow, what to do in this case will help some tips.

Cucumber germs may develop slowly due to the rare ventilation of the room. The air becomes damp or too dry, stale.
Hot air, another reason why cucumbers don't grow. If the air temperature in the greenhouse is more than 27 degrees, then the leaves and ovaries turn yellow and crumble.
Another unfavorable factor why the ovaries do not develop and wither is the close planting of cucumbers. The green tops of densely planted seedlings create a shadow and do not allow air to pass through. Therefore, it is very important to keep your distance during landing. The distance between each cucumber bush in a row should be at least 45 cm.
The reason why the chicks do not grow is due to the untimely harvest. During the period of active ripening of cucumbers, it is recommended to harvest every other day. If the fruits remain on the lashes, they overripe, from which they begin to take all the nutrients. The new ovary does not develop, but dries up and falls off.
Violation of the irrigation regime is often the main factor why small cucumbers turn yellow in the greenhouse. A lack or excess of moisture leads to the fact that the ovaries of cucumbers dry in the greenhouse. Water for irrigation should be warm (about 20 degrees) and it is desirable to defend it. You can not sprinkle too often, it is better to water under the root, with a jet without pressure.
Ovary does not form on cucumbers or they turn yellow due to a lack of trace elements in the soil. When correcting the situation, the main thing is not to overdo it, since an overabundance of fertilizers is not beneficial.
Zelentsy do not develop due to too many ovaries on one bush. The optimal number of them is about 26 pieces. If there are more ovaries, then more nutrients begin to be consumed and the ovaries of cucumbers turn yellow and dry out.

Insufficient or no pollination also causes yellowing of cucumber ovaries.Because the greenhouse is usually closed, it is best to choose self-pollinating varieties. The same varieties of cucumbers are best chosen for growing on the window. The inflorescences of such cucumbers have both stamens and pistils. If bee-pollinated varieties are planted, then you need to take care of the free access of insects to cucumber beds.

The reasons why the ovaries of cucumbers turn yellow in the open field are almost the same as in a greenhouse or greenhouse. Additional factors are frosts, heavy rains and through winds.

What to do if the ovaries of cucumbers turn yellow in the greenhouse

As soon as the reason why the cucumbers turn yellow has been identified, they begin to eliminate it. The following steps will help.

When cucumbers cannot start, watering should be adjusted. Before the fruiting period, it is recommended to water every other day with warm, settled water in the evening. During fruiting, watering is recommended to be done less frequently. Approximately 5 liters should go to each root.
Poorly developing cucumbers need to be ventilated. It is advisable to equip the greenhouse with a ventilation system, on a hot day you can open a window or a door.
Be sure to monitor the air temperature at night and daytime.
To prevent the ovaries from drying out, it is imperative to form a stem, tie it to a support and prevent excessive hanging of the fruit from one branch.
When cucumbers turn yellow in a greenhouse, what to do depends largely on the variety. If bee-pollinated varieties of cucumbers grow in the greenhouse, then you need to check whether the bees can enter the greenhouse. It is recommended to open the door of the greenhouse during the day, to attract the attention of insects, you can use a sugar-honey solution. There is an option to help the plant yourself.
If the ovaries of cucumbers fall due to the large number on the branch, then it is recommended to pick some of them. But it is better to carry out stepsoning in time.

If cucumbers are tied, but do not grow, the situation may be the result of a lack of top dressing. Soil depletion leads to a lack of useful trace elements. Wood ash will help replenish potassium. Nitrogen deficiency will be filled with urea. Chicken manure and mullein are also popular.

You should not abuse nitrogen fertilizers, which is why the tops begin to develop, and the ovaries dry up and can crumble. You can feed cucumbers with potassium-phosphorus fertilizers.

It is useful to carry out foliar treatment of the plant. Useful infusion based on urea. 50 g of urea and 90 g of soda are added to 10 liters of water. Such a composition helps to restore damaged seedlings in just two sprays.

Gardeners may experience not only yellowing, but also falling ovaries. The problem of why the ovary falls on cucumbers often leads to non-compliance with the temperature regime, improper watering, lack of mineral fertilizers and poor pollination.

Why can ovaries turn yellow and dry on cucumbers, diseases and pests

The formed ovaries of cucumbers turn yellow and fall off as a result of various infections.

Sudden temperature changes, moist air, dense planting leads to the development of downy mildew. First, the leaves begin to turn yellow and dry, brown spots appear. After a few days, the whole plant begins to turn yellow, including the ovaries on cucumbers in the greenhouse. The first step in solving the problem is to stop watering and fertilizing. You can use drugs such as Topaz, Oksihom.
The reason why cucumbers in a greenhouse turn yellow is often a fungal disease such as fusarium. Once inside the plant, it prevents the movement of nutrients and the plant dries up.Treatment is carried out with drugs such as Fitosporin, Trichofit, Kornevin.
The ovaries of cucumbers do not develop due to bacteriosis disease. Frequent watering and an excess of moisture causes the reproduction of the fungus. You should not plant the bushes too close to each other, you need to water it correctly, and after watering, be sure to ventilate the room.

The invasion of various insect pests is another reason why the ovaries dry and the embryos turn yellow. The most frequent unwanted guests are spider mites, aphids, and whiteflies. You can fight them with compositions from folk recipes or use insecticides (Aktara, Aktellik).

If the cucumber does not grow due to pests, then you can make an infusion of hot pepper. The product is poured with boiling water and left to infuse for a day. The finished solution is filtered, shavings of crushed soap and wood ash are added.
You can make an infusion of onion skins. Half a bucket of husks is poured with a bucket of water, put on fire and brought to a boil. Then for 10 hours you need to leave to insist. The filtered solution is diluted with water and sprayed with cucumber beds.
Infusion of potato tops will not let the ovaries dry. Greens are poured with boiling water and insisted for a day. For better adhesion of the solution, add soap to the composition during spraying.
Infectious diseases that can cause ovaries to fall off are treated with skim milk. A few drops of iodine and soap are additionally added to a liter of milk. You need to water the cucumbers with the composition under the root.

As a preventive measure against insects, you can spray cucumbers with modern preparations: Tsimbush, Fitoverm, Akarin.

What to do so that the ovaries on cucumbers do not turn yellow, preventive measures

General preventive measures will prevent the yellowing of the set cucumbers.

In autumn and spring, disinfect the greenhouse structure and garden equipment.
In order for the cucumbers not to wilt and grow well, it is recommended to replace the top layer of soil in the greenhouse with a new one every year.
It is recommended to fertilize the soil before planting cucumbers, for example, with rotted manure.
Cucumber beds in a polycarbonate greenhouse must be regularly weeded from weeds and loosened after watering.
It is useful to carry out soil mulching. An additional layer of straw, grass, sawdust will help protect the plant from adverse factors.
The distance between beds and seedlings in a row should be respected.
During the active ripening of fruits, it is recommended to harvest daily or every other day.

Few ovaries may be due to poor seed quality and poor preparation of planting material. Therefore, cucumber seeds must be carefully selected, heated and treated with special preparations before planting.

In order to have fewer yellowed ovaries, it is necessary to carry out preventive treatment of cucumbers. Spraying with boric acid has a positive effect on the formation of cucumbers. You can dilute the solution from drugs such as Bud, Ovary.