Why do cucumber ovaries in a greenhouse turn yellow and dry out?

Why is this happening?

There are many videos on the topic, Why do cucumber embryos turn yellow? In a greenhouse and what to do. Every beginning gardener needs to know what can contribute to plant disease and how to deal with it.

Incorrect pollination of the plant

It's important to always remember that cucumbers will grow well if they receive intensive pollination. Insects are needed to transfer pollen, and greenhouses are enclosed spaces. This means bees and other insects won't have a hard time getting in. Without them, the plant won't receive proper pollination.

The greenhouse needs to be regularly ventilated to allow bees access. They can't survive in greenhouses, and without pollination, cucumbers may turn yellow. The ovaries that appear on pollinated fruit are capable of developing quickly.

Advice

This situation can be resolved in various ways. First, it's recommended to ventilate the greenhouse daily during the day to allow insects access. Second, only self-pollinating varieties can be used for greenhouse cultivation. Third, pollinate the ovaries yourself. All of this will lead to a good harvest.

Temperature

It's important to remember that cucumbers are heat-loving plants. However, in some areas, there's a risk of the plants dying due to the last frost, which usually occurs in May. This can cause the plant to turn yellow and stop growing.

Advice

Frosts are easy to combat. Simply cover the cucumbers with plastic wrap. The temperature shouldn't fall below 14 degrees Celsius (55 degrees Fahrenheit). 25 degrees Celsius (77 degrees Fahrenheit) is considered ideal.

Insufficient intake of minerals

A lack of nutrients in the soil is to blame. To ensure proper fruit formation, the soil needs to be saturated with potassium. A deficiency of this element can cause cucumbers to turn yellow. Why do ovaries turn yellow? cucumbers in a polycarbonate greenhouse So what should I do? The answer to this question is provided below, along with a photo. Nitrogen is required for proper fruit development. Without it, cucumbers won't grow either.

Advice

Now that we know the problem, we need to figure out how to combat it. To ensure proper cucumber development, soil fertility must be maintained. The plant requires regular feeding. Tree resin is a great remedy for yellowing ovaries. Many prefer to feed the plants with urea.

Inexperienced gardeners often notice the problem too late. In this case, fertilizing is necessary immediately. To do this, you can prepare a fertilizer solution. Combine 10 liters of water and a large spoonful of urea. You can also add resin and mix everything together. This solution can be sprayed on the leaves of the bushes. But why, even with this care, do cucumber ovaries in the greenhouse turn yellow, and what can be done about it? Because spraying causes the bushes to lose moisture even faster. This treatment is best done in the morning and evening hours, when the sun is unable to affect the ovaries. After a few days, the yellowing problem will disappear.

Incorrect watering

In greenhouses, it's essential to maintain a high water level regularly. If this is done incorrectly, the plants will die. Watering is a key factor in the appearance of yellow leaves. Greenhouses have very high temperatures, so cucumbers need to be watered about five times over a seven-day period. Watering should be done in the morning and evening, when the sun is out. During the day, the sun can evaporate moisture from cucumbers, causing them to turn yellow.

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There are more ovaries than expected

It's possible for more than 25 ovaries to form on a single plant. This can also cause them to turn yellow. It's important to remember to remove excess shoots promptly. After all, as the number of ovaries increases, the consumption of nutrients increases. But why do cucumber buds turn yellow in a greenhouse, and what can be done? Fruits turn yellow because they aren't receiving the necessary nutrients for proper development. Something needs to be done about yellowed ovaries, as they will waste nutrients.

Advice

In this case, you'll need to remove side shoots. This means you can simply replant some of the shoots. Or you can simply remove excess ovaries. This will help produce healthy fruit.

Various diseases

Why do cucumber ovaries turn yellow in a greenhouse, and what can be done? Bacterial wilt can be the culprit. It can also occur for many reasons. Yellowing ovaries can be caused by dense planting. It is recommended to plant cucumbers at a certain distance from each other. Bacterial wilt can also be caused by high humidity. This can be prevented by regularly ventilating the greenhouse.

The plant may turn yellow due to a fungal infection. Powdery mildew is the most common disease. A white coating appears on the leaves, which gradually wilt. This disease develops due to watering with cold water or low temperatures. At the first signs of the disease, the plant should be sprayed with a mullein solution. It is also necessary to treat the soil with potassium permanganate annually.

During growing cucumbers You may encounter downy mildew. This disease can be recognized by greenish spots that darken over time. Urgent action is necessary, otherwise the plant will die.

Watering with cold water, improper planting, and sudden drops in temperature can all lead to root rot. This condition causes leaves to turn yellow. It can and should be combated. To do this, add chalk and ash to the soil. Dead plants should be removed to prevent the disease from spreading to other plants.

Parasites are to blame for everything

Certain pests can also cause cucumbers to turn yellow. Aphids are the most common. Small yellow spots appear on the leaves. Over time, they become larger and turn dark green. Melon aphids are transmitted from weeds, so it's crucial to remove them promptly.

Spider mites may appear on the underside of leaves. They spread yellow spots across the entire leaf, causing it to wilt. Akarin is an excellent pest control product.

All of these factors can cause yellowing of the ovaries. This problem can be overcome; the most important thing is to determine the cause. With proper cultivation and adherence to all standards, a good harvest can be achieved.