Why do cucumber ovaries turn yellow and dry

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To get a rich harvest, the gardener has to perform a number of specific actions: sowing seeds, watering, fertilizing, etc. the further result depends on them. It is possible that problematic situations may arise in the process of plant growth, and then the gardener begins to ask quite logical questions: why does the cucumber ovary turn yellow and dry, and what needs to be done in such a situation?

Cucumber ovaries turn yellow and dry

Main reasons

According to the results of the surveys, this problem is often faced by those vegetable growers who grow this vegetable crop not in open space, but in greenhouses. Another reason is that the gardener independently creates all the conditions for this to happen. The experts who carried out the research came up with a number of main reasons:

1. Temperature violations;
2. High yield of hybrids;
3. Poor insect performance;
4. Lack of light;
5. Excess or lack of moisture in the soil;
6. Improper use of mineral fertilizers.

To find the answer to the question: why do cucumber ovaries turn yellow, it is important to carefully analyze each reason.

Temperature violations

Permissible ambient temperature for growing: sunny day 21-24 degrees, cloudy at least 22 degrees, at night 16-18 degrees. As soon as the fruiting period begins, the indicators increase by 1-2 degrees, respectively. If a vegetable grower produces those varieties that need bee pollination, then the temperature rises by a few more degrees. In the case when the temperature of the earth drops to 13 -14 degrees, then under such conditions the ovary of cucumbers turns yellow and after a while they rot.

It is also important to mention here: why do the ovaries turn yellow in cucumbers grown in closed greenhouse conditions. Very often this happens due to a change in the temperature background. The film coating transmits light well, therefore, on a hot day, the air inside can heat up to 35-40C, and therefore the plants overheat. At night, polyethylene releases the accumulated heat, so a sharp temperature drop occurs inside the structure, leading to the falling off of leaves and ovaries.

High yield of hybrids

The uniqueness of modern plants is that many of them were created piece by piece, so they are labeled "hybrids". Growing such varieties, the vegetable grower receives both positive and negative consequences. The positive ones include:

• high yield rate;
• disease resistance;

But there is also a negative side, which becomes the reason: why the ovaries of cucumbers turn yellow.The thing is that in the axils, almost every leaf has one or more ovaries, so the plant spends most of its vital resources on the full development of each of them, because of such a load, yellow spots may appear on the cucumbers, and over time they simply rot before flowering. To influence the process, it is necessary to remove excess ovaries in time, and this is done before the flowers bloom.

Poor insect performance

Unpolished inflorescences fall off

Very often, the reason that yellowing appears on cucumbers or flowers fall off is the poor work of insects (bees). They are very sensitive to weather conditions, they rarely fly into a hot plastic shelter. Even if a bee tries to transfer pollen under such conditions, it becomes sterile and unsuitable for pollination. Accordingly, the unfertilized cucumber ovary will dry out and fall off.

Lack of light

Any plant needs light, and cucumbers are very demanding on this, since the lack of light illumination negatively affects the development of culture.

The lack of light may still be due to the fact that the landing norms were not followed during landing. Often, gardeners plant as many bushes, completely disregarding the fact that as soon as they germinate, they will interfere by creating a shadow. To prevent such situations, you need to accurately calculate the number of bushes that can be planted per square meter. m.

Hybrid varieties have a well-developed vegetative system, therefore, when planting such plants, you need to know several points: how to accurately set up greenhouses so that it is well lit, as well as the recommended feeding area; on average, parthenocarpic varieties are planted 1 per 1 sq. M. maximum 2 seedlings. Bee-pollinated hybrid plants can be planted with a maximum of 3 pcs. for 1 sq.m. If you do not adhere to this planting scheme, yellowing may appear on the cucumbers and the flowers simply fall off, as the grown bushes will begin to give shade.

Unformed bush

If the gardener noticed that the cucumber ovary is drying up, then this may happen due to the fact that the bush was not formed. Cucumber tops have very branching shoots, if they are not removed, they will begin to shade one another. The upper part is pinched, if the length exceeds 23-25 ​​cm, such shoots weaken the bush, so the ovaries fall off, in some cucumber rot appears).

Formation must begin with stripping the sinuses, since the rudiments of shoots, antennae and flowers are located in them. As these parts develop, they need more nutrients, and this leads to a weakening of the root. If the rudimentary elements are removed in time, then it will be like treating the mother bush, since it will not waste all resources on feeding unnecessary branches, therefore, it becomes possible to develop a strong system.

Excess or lack of moisture in the soil

Any vegetable crop needs proper and timely irrigation, otherwise drying occurs. With cucumbers in this matter, everything is simple, so that the plants do not turn yellow, it is necessary to take into account the fact that the moisture content of the soil before fruiting should be slightly less than during harvest. As soon as the fruits begin to ripen, the soil needs additional watering so that the soil does not lose moisture. But you also need to consider some watering rules:

• it is forbidden to irrigate with cold water (11-15C), this leads to a sharp and massive drop;
• so that there are more flowers (especially female ones), during the period of their formation, they are not first watered for several days to dry the ground, and then they are irrigated;
• over-watering can cause the formation of harmful bacteria, so irrigation must be done very carefully.

Improper use of mineral fertilizers

The problem can start due to improper fertilization

Leaves and ovaries also turn yellow due to improper fertilization, this reason may lie not only in the lack of elements, but in their incorrect combination.

Incompatible fertilizers

It is forbidden to combine preparations containing ammoniacal nitrogen with preparations containing alkali. So ammonium nitrate must not be mixed with ash or slag.

Compatible fertilizers

Compatible fertilizers include all organic fertilizers:

• bird droppings;
• manure;
• urea;
• humus.

Among artificial fertilizers, the following are compatible:

• calcium nitrate phosphoric flour;
• lime fertilizer sodium nitrate;
• potassium chloride superphosphate;
• potassium sulfate carbamide.

Parthenocarpic varieties are very dependent on the factor of proper feeding, since they have a powerful vegetative and root system, so they need abundant watering, and this can lead to leaching of useful minerals from the ground. If the plants do not receive the necessary elements, then the ovaries dry up and fall off.

The treatment is simple, the gardener needs to feed the bushes with mineral fertilizers in time.

Conclusion

Growing any garden culture is hard work, during which all sorts of difficulties can arise. If the gardener sets a goal to get the maximum yield, then he needs to know what problems arise and how to deal with them. Knowing the causes of yellowing and the factors due to which the young ovary of cucumbers dries up, it is possible to develop a system of preventive measures.