Cucumbers turned yellow ahead of time or are bitter - what is the reason?

 Cucumbers turned yellow ahead of time or are bitter - what is the reason?

You sowed cucumber seeds according to all the rules, carefully looked after the seedlings, watering and feeding on time, watched the first cucumbers ripen ... Imagining the refreshing taste of a green cucumber, you pluck the first fruit from the plant, but in fact it turns out to be bitter! Or cucumbers start to turn yellow ahead of time, and at the same time their taste deteriorates.

What caused the bitterness in cucumbers, and what to do now?

What caused such annoying troubles? Why cucumbers bitter or prematurely yellowed? How to prevent the appearance of yellow or bitter cucumbers in the future and can such fruits be used somewhere? You will find detailed answers to all these questions below. Don't despair, your cucumber growing efforts won't go to waste!

In appearance, bitter cucumbers are no different from ordinary ones - the same bright green color, crispy crust, fresh aroma. Who among the housewives has never spoiled a salad with bitterness, deceived by the usual appearance of a cucumber! You can, of course, just cut off the peel, which accumulates the most bitterness, but after all, it is in the peel of the cucumber that the main amount of useful trace elements and vitamins is contained, you should not constantly neglect it.

In appearance, bitter cucumbers are no different from ordinary ones.

Why are cucumbers bitter?

The reason lies in a special substance cucurbitacinwith a bitter taste. This substance is found in all cucumbers, but in some varieties it is more, and in others (hybrid) - less. Under certain circumstances, the cucurbitacin content may increase markedly. The main causes of bitterness in cucumbers:

  • lack of moisture;
  • irregular watering;
  • an abundance of moisture in a cold, rainy summer;
  • excess sun;
  • direct exposure to sunlight;
  • low humidity in the greenhouse;
  • lack of nitrogen-potassium nutrition;
  • selection of seeds from the back of the seed cucumber.

Cucurbitacin content can also increase with inaccurate harvesting, when cucumber lashes are twisted and damaged. When, after hot weather, a long cold snap suddenly sets in with heavy rains, the cucumbers also begin to taste bitter.

How can bitterness be prevented?

Water cucumbers with lukewarm water only, increasing watering in hot, sunny weather and pausing when it gets colder. It is enough to moisten the soil to a depth of 10-15 cm. In extreme heat, it is recommended to additionally spray the plants (in the morning or in the evenings). For feeding, it is better to take potassium nitrate and complex fertilizers with a balanced composition of nutrients. Remember that cucumbers do not tolerate fresh manure.

To be on the safe side, give preference to such varieties of cucumbers, on the packaging of which it is indicated that they will not taste bitter. These varieties contain a special gene that prevents the accumulation of cucurbitacin. However, keep in mind that the taste of these cucumbers will be less expressive, softer. Varieties with a bright taste are more prone to bitterness.

Water cucumbers only with lukewarm water, increasing watering in hot sunny weather and pausing when it gets colder

You should not throw away bitter cucumbers - during processing, cucurbitacin is split, which means that you can pickle or pickle fruits that are not suitable for fresh consumption. If the bitterness is not too strong, you can cut off the peel and try to hold the cucumbers in plain water for several hours so that the bitterness goes away.

Cucumbers turn yellow before our eyes, how to save them?

The reasons why the ovaries, fruits or leaves of cucumbers turn yellow can be different. Here it is important to correctly determine: are pests, diseases, extra ovaries to blame for everything, or is it improper care of plants?

So, why do cucumbers turn yellow:

  • not enough light;
  • the irrigation regime is violated (the soil dries up);
  • too hot and stuffy in the greenhouse;
  • low air temperature;
  • more than 20 ovaries on one plant;
  • there is not enough nitrogen and phosphorus;
  • bee-pollinated, not self-pollinated, varieties of cucumbers are planted in the greenhouse;
  • For several years in a row, cucumbers have been grown on the same plot of land, which is why infections and fungal spores accumulate in the soil.

How to prevent the appearance of yellow cucumbers?

Since cucumbers are very fond of water, you need to carefully observe the watering regime and use only settled, warm water (you cannot water cucumbers in the greenhouse from a hose), otherwise the plants will begin to turn yellow. During the fruiting period, watering should be increased: on sunny days, water in the morning, and on cloudy days - during the day. In extreme heat, you can add a refreshing light daytime watering of plants at the root.

Yellowness of fruits and leaves can be caused by poor soil with insufficient nutrition

The yellowness of fruits and leaves can be caused by poor soil with insufficient nutrition. From time to time, fertilize with mullein solution and complex mineral fertilizers. But an overdose of fertilizers can also negatively affect plants, observe the measure.

If you notice that more than 25 ovaries have formed on the plants, you will need to pinch the new shoots so that they do not delay the formation of greens. From many ovaries, small ugly fruits are formed, which quickly begin to turn yellow and deteriorate.

Video about the appearance of yellow cucumbers

Various diseases of cucumbers or attack of pests can contribute to yellowing of fruits and leaves. You will learn about preventive measures and methods of dealing with such problems from the corresponding article on our website. Observe the rules for caring for cucumbers, react in a timely manner to the appearance of alarming symptoms, and you will be able to grow delicious, crispy cucumbers!


When to plant cucumbers for seedlings and in the ground in 2021, the lunar and folk calendars will help you

In different regions, the dates for sowing cucumbers are different, so you need to focus more on the weather, folk signs and dates according to the lunar calendar 2021.

Cucumbers are plants native to the tropics, so they love warmth. Seedlings of cucumbers can be planted in the soil with a temperature not lower than + 15 ° С. Without measuring the soil temperature, the planting time of cucumbers can be determined by folk signs or other signs - when the air temperature at night does not drop below + 10 ° C for a week, or when dandelions bloom en masse.

In addition, cucumber varieties are selected according to the type of growth and quality of the fruit.


Greenhouse cucumber care

Cucumbers love abundant watering, especially during flowering and fruiting. At this time, they need to be watered often - after each harvest. But in small doses - 2–2.5 liters per 1 square meter. m.

But when watering, there are two important watering rules to consider:

1. Never pour water on the leaves - the greenhouse does not have as good ventilation as the vegetable garden, and here the plants will start to hurt. The ideal option is under the root, with settled water. Watering during the day, under the sun's rays and directly on the leaves is also impossible: this is how small water lenses are formed from drops that refract light, and the plants eventually get burned.

2. Water only with warm water, otherwise the cucumbers will begin to shed their ovaries.


Microclimate in the greenhouse and in the garden

Intensive ventilation of the greenhouse effectively helps against the formation of hollow cucumbers in combination with feeding with ash. Changes in moisture are reflected in the development of cucumbers: water light soil often, and heavy soil less often, but try to loosen more often. Dangerous for fruits and jumps in the thermometer when the time of day changes.

Decision

Solve the problem for planting outside the greenhouse by covering the bushes at night.

Cucumbers grow at night. Ideal if the temperature does not drop below 20 ° C. Stressful temperatures, below 10 ° C and above 30 ° C, lower immunity and increase the likelihood of illness. The growth regulator will help the development of borage during unfavorable weather.


Why don't ovaries grow on cucumbers?

Often gardeners complain - there are no cucumbers, only barren flowers. What to do in this case? What is the reason for the continuous flowering of plants with barren flowers alone? And are they really needed at all, these barren flowers?

First of all, a significant delay in the appearance of female flowers and late fruiting lies in the quality of seeds. If you did not heed the numerous recommendations and sowed fresh seeds, then the plants grown from them form first male flowers - barren flowers, and then female ones. A completely different picture if you sowed seeds 2-3 years ago. In this case, female flowers are formed simultaneously with male flowers or earlier than male ones.

But what if your seeds are fresh, or you do not know the age of the purchased seeds? This is easy to do - they need to be warmed up, and plants from such seeds will give female flowers much earlier than usual. Pre-sowing hardening of seeds by negative or variable temperatures will also accelerate the appearance of female flowers.

Another reason for the infertility of cucumbers is an imbalance in nutrition, most often the abundance of nitrogen fertilizers in the soil, which causes the rapid growth of lashes, leaves and barren flowers. In this case, the plants are very useful for feeding with fast-acting phosphorus fertilizers, for example, superphosphate extract (2 tablespoons per 10 liters of hot 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 cold water. The water temperature must be at least 25 ° C. The water should not be allowed to be colder than the soil.

The next reason for "barren abundance" is a large excess of moisture in the soil. Dry the soil in the cucumber patch for a few days. As soon as the leaves on the plants are slightly twisted, an abundance of female flowers will immediately appear. But at the same time - do not overdry the soil.

The high temperature of the ambient air, the strong thickening of the plants in the greenhouse, etc. also have a serious impact on the "barren abundance".

And if all this does not help, then pinch the top of the main stem of the plants. It will stop the growth of plants in length, will cause the growth of lateral shoots and female flowers.

But what about the barren flowers? Some gardeners remove most of the barren flowers, mistakenly hoping that it will cause the female flowers to grow. There is no benefit from removing them, and it is possible to worsen the conditions for pollination of female flowers. The barren flowers on the plant themselves will quickly turn yellow and fall off.

In recent years, the most popular are bunch varieties and hybrids of cucumbers, especially the female type of flowering, which are distinguished by high yields and mainly good pickling qualities. They form 3 to 7 ovaries in a knot. But not every gardener manages to get fruits from these ovaries.

This is a fairly common occurrence, especially in hot weather and in plastic greenhouses. At the same time, part of the ovaries does not grow and gradually begins to turn yellow, and then quickly dries up and disappears. What's the matter? There are several reasons for this phenomenon:

And in order to improve the filling of the ovaries, especially in cool weather, it is necessary to carry out foliar feeding of plants with the preparations "Zircon" or "Epin", which increase the resistance of plants to stressful situations.


Cucumbers bloom but do not bear fruit. What to do?

Hello! We are often asked questions, why do cucumbers bloom and do not bear fruit?

First of all, I must say that there are two types of cucumbers: bee-pollinated and self-fertile, which are popularly called self-pollinated. Therefore, for the sake of simplicity, we will say so, so you should know very well what kind of cucumber to plant. If you have a self-pollinated cucumber, then its main fruiting is on the central stem. We pinch the lateral shoots of such a cucumber somewhere above the second leaf. And in the bee - pollinated varietal cucumbers, on the central stem are male flowers that do not bear fruit. Accordingly, barren flowers and female flowers that bear fruit, in varietal cucumbers, develop on lateral shoots, respectively. You cannot pinch them briefly, and this is why: we see such a picture that cucumbers are blooming, blooming with male flowers and there is no harvest on varietal bee-pollinated cucumbers. Female flowers on lateral shoots appear 2-3 weeks after male flowers, this is biologically laid down by nature, so we repeat, if you have a lot of flowers and no harvest, you just need to wait a couple of weeks until lateral shoots develop. Female flowers will appear on them and, accordingly, there will be cucumbers. And on self-pollinated cucumbers there is a flower and a cucumber immediately behind it, that is, there will never be empty flowers here, this does not mean that varieties and hybrids of self-pollinated cucumbers are better than bee-pollinated ones, just their harvest begins to form earlier.

A few more words about leaving. We love tied cucumbers more. They get sick less and since we plant self-fruit cucumbers, which bear fruit on the central stem, it is convenient to tie it up from the point of view of providing the cucumber with carbon dioxide. If you have a lot of room for side shoots, for bees - pollinated varieties, then get ready for the next picture. In bee-pollinated varieties, cucumbers appear a little later than in self-fertile ones. So, cucumbers begin to grow a little later, but there are a lot of them. There it can turn out and 5-6 buckets per day for one vegetable garden! And so it continues for a week and a half, in fact, until the first rain, because after the rain a fungal disease begins to develop. You noticed that if there are spots on the leaves, or the edge begins to turn yellow and seem to dry out, this is really a disease that needs to be fought with antifungal agents. But you really cannot fight, because the ground is very close to the leaf, it rains and the leaf is constantly infected, and plus dew falls in the morning and in the evening. That is, cucumbers are at a very high risk of such a disease, and this disease occurs at some point. And when the cucumbers are tied up, of course, they also need to be prophylactically processed, but they get sick much less, that is, because of the rain, a couple of the lower leaves there may turn yellow, but then until the very frosts the top will be green. Everything will be fine, even if you leave for a week or two and then come back, you will see that our cucumbers are sick, we also take phytodoctor and trichodermin treated with biological products. We alternate them. But accordingly, the lower leaves of course will never turn green back, if they have already turned yellow. The affected tissue and it will not be green back, but on the other hand, young foliage, young cucumbers grow from above, and further fruiting continues perfectly.

Let's summarize. If you have little area and you want early cucumbers, then it is worth sowing self-fertile and tying it to a trellis. And if you have space, then you can take varietal seeds, they are also a little cheaper.


Ficus Benjamina sheds foliage due to lack of nutrition

Ficus Benjamin leaves fall off if the plant:

  • located in a substrate poor in organic and mineral substances
  • have not been transplanted for a long time, and the roots do not have the opportunity to receive so much nutrition and moisture to meet all the needs of the overgrown crown.

An immediate measure will be the feeding of decorative deciduous crops with a liquid complex agent. And at the first opportunity, ficus:

  • pruned, forming a more compact crown and simultaneously removing bare and dead shoots
  • transplanted into a loose nutrient substrate, having previously selected a suitable, larger pot.

The longer Benjamin's ficus is in unsuitable conditions, the higher the risk of finding pests on it.

Weakened plants are most often attacked by spider mites, thrips, scale insects.When a pet is taken out into the garden for the summer, aphids or miner fly larvae can settle on it.

So that uninvited guests do not cause the growth of Benjamin's ficus to stop and the foliage to fall, it is useful to regularly inspect the plant, and, if necessary, carry out treatment with systemic insecticides and acaricides.


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