Why do cucumber embryos turn yellow in a greenhouse and what should be done about it?

Causes of yellowing of fruits

The cause is improper growing practices. The most important thing is to create a favorable microclimate for plant growth and development. It's essential to provide good lighting, a stable temperature not only for the air but also for the soil, and to constantly ventilate the greenhouse. It's crucial to ensure the soil is well-hydrated. It should never dry out, as this can cause the fruit to turn yellow and wilt. Why? cucumbers are turning yellow and their embryos in the greenhouse, and what needs to be done?

• Yellowing occurs due to a lack of nitrogen, potassium, and phosphorus in the soil. This can be prevented by adding fertilizer to the soil each season. Special cucumber fertilizers are available for this purpose. These already contain the necessary micronutrients. However, be careful not to overdo it with fertilizer, as excessive use can also negatively impact the plant.
• If hybrid varieties are used, up to 150 ovaries can form. This can overload the bush, leading to fruit disease. For greenhouses, 25 ovaries are sufficient; any remaining ovaries should be removed.
• It's recommended to rotate cucumber growing locations annually, as constantly growing cucumbers in the same greenhouse severely depletes the soil, which in turn becomes susceptible to various infections that cause yellow leaves and fruit. This can lead to plant disease and crop loss.
• Insect pests also negatively impact cucumber bushes. They feed on the sap, shoots, and fruits of the plant, causing the cucumbers to turn yellow, dry out, and eventually die. Moreover, these pests can reproduce at an accelerated rate. This can be avoided by inspecting the bushes daily and treating them with special pesticides.
• Cucumber ovaries may turn yellow due to improper fertilization. The plant's pollen is sticky, which attracts bees. To attract them, increase magnesium fertilizers and other micronutrients.

Growing cucumbers in a greenhouse isn't easy. Proper care is essential for a good harvest. If you follow all the rules and helpful tips, you'll be able to enjoy fresh cucumbers at home as early as spring. You can watch the video to learn why cucumber embryos turn yellow in a greenhouse and what to do about it.

Other causes of fruit yellowing

In addition to the above reasons, there are several other causes of leaf death. But why do cucumber embryos turn yellow in a greenhouse, and what should be done? The main cause is believed to be a drop in temperature. As everyone knows, cucumbers are heat-loving plants, so avoid watering the bushes with cold water, and the air should also remain warm. Consider Methods for treating greenhouses in spring against diseases and pests.

Certain factors can even lead to the death of ovaries. In some cases, cucumber leaves may turn yellow at the edges. This is often due to insufficient pollination. In this case, the cucumbers experience premature vegetation, which leads to their death.

As mentioned earlier, yellowing of the ovaries can be caused by their large number. This prevents the plant from being able to provide enough energy to nourish all the ovaries. This is why they begin to turn yellow along with the leaves.

Helpful tips

Why do cucumber embryos turn yellow in greenhouses, and what should be done? Many gardeners want to know the answer to this question. First, it's important to determine the cause and then begin addressing it. But prevention is best to prevent yellowing of the plant's leaves and fruits. Follow clear rules and helpful tips, and this situation will never happen again.

• It's crucial to water your garden beds regularly. Don't allow the soil to dry out too much.
• Crop rotation must be done correctly. This affects the spread of fruit diseases.
• As you'll notice, there are about four mature leaves on the plant that need to be sprayed. To prepare the solution, mix a liter of milk, 1/5 of laundry soap, and 35 drops of iodine. Mix everything in 10 liters of water. Spray the plant with this solution approximately every 1.5 weeks.
• Cucumbers should also be regularly fertilized. Both mineral and organic fertilizers are permitted.
• To prevent fungus from developing on the plant, it needs to be sprayed regularly. Baking soda will help with this. Dissolve one tablespoon of baking soda solution in 10 liters of water. Spray the plant with this solution.
• To prevent yellowing of fruits and leaves, spray the plant with a special infusion. It's easy to prepare. First, soak some bread overnight. Then, add a bottle of iodine. Then, take 1 liter of the mixture and dilute it in a bucket of water. Spray the plant every 14 days.

• At the initial stage of yellowing, the plant can still be saved. To do this, use a weak solution of potassium permanganate, which you should water the bushes with to grow cucumbers in a polycarbonate greenhouse.
• Ordinary onion peels can be effective against various pests. First, boil them and let them steep overnight. Then measure the amount of peels. They should be completely filled into a 700-gram jar. This amount is needed for 10 liters of water. This solution is useful not only for spraying the leaves but also for watering.

Reasons why cucumbers on the balcony turn yellow

Many people don't have garden plots, so they have to look for other places to grow cucumbers. They often try to grow them on balconies. But everyone knows that cucumbers are very easy to grow, so they thrive in such conditions. However, even with this method of growing cucumbers, you may encounter the problem of yellowing fruits. Why do cucumbers and their buds turn yellow in a greenhouse, and what should you do? There can be a variety of causes for this phenomenon.

This can occur due to a nutrient deficiency. It's recommended to grow cucumbers indoors in fairly large containers, using garden soil instead. In the early stages, it's best to feed the plant with a mullein solution, and later, you can use mineral fertilizers for indoor plants.

In some cases, embryos may fall off due to bacterial blight. To avoid this, preheat and disinfect the seeds. Only after this treatment can they be planted. Whether you grow cucumbers in a greenhouse or on a balcony, the most important thing is proper care.

What diseases and insect pests cause cucumbers to turn yellow?

Why do cucumbers and their embryos turn yellow in a greenhouse, and what should be done? A variety of factors can contribute to this. It's important to identify them, as many different diseases and parasites can cause yellowing.

• You may encounter powdery mildew, a type of fungus that inhibits photosynthesis. Small pale spots may appear on the leaves, growing larger over time. These spots can spread across the entire leaf, forming a white coating. This causes the leaves to dry out and turn yellow. This disease can be controlled with various fungicides.
• Some gardeners notice another fungal disease on cucumbers: Fusarium wilt. In this disease, parasitic spores enter the plant's capillaries and release harmful toxins. This leads to a lack of nutrients in the leaves and fruits. Ultimately, this condition can lead to the death of the cucumbers. In this situation, it is recommended to replace the contaminated soil and regularly rotate the fruit variety.
• Plants can be susceptible to root rot. During this period, the leaves begin to turn yellow at the bottom. Root rot can be caused by overwatering the plant with cold water or by temperature fluctuations. This disease can be transmitted through the soil.

• Downy mildew may develop. This disease can be caused by excessive soil moisture. With downy mildew, fruits and leaves begin to turn yellow and shrink. If the plant is infected early in the fruiting process, the harvest may not be achieved. The disease manifests itself as dark, moist, angular spots.
• Why else do cucumbers and their embryos turn yellow in a greenhouse, and what should be done? It's also important to know about certain insect pests and their dangers. When growing cucumbers, you may encounter melon aphids. They live on the underside of the leaves and suck out all the plant's sap. They can be seen throughout the season.
• You may notice webbing on the underside of leaves. This means you have spider mites. They can reproduce throughout the summer. They can overwinter in greenhouse cracks or on the leaves themselves. Only by getting rid of these insects can you find a solution. cucumbers for a polycarbonate greenhouse.

Proper cultivation

If you grow cucumbers not in soil, but in sand, then you need to follow several rules.

• It's important to know that on hot days, the plant requires ample watering. Therefore, cucumbers need to be watered daily.
• Water should be applied only to the leaves. Because the leaves aren't tied down, moisture is retained underneath them, protecting the soil from drying out.
• Experts in this field recommend sprinkling the plant with ash. You can also use a special product.

It's easy to prepare. You can use any weeds. For example, you can take nettles, place them in a bucket, and then add water. Let the solution sit covered for about seven days. Then, dilute the solution and fertilize the cucumbers. Apply it carefully under the leaves. The ash helps preserve the plant, preventing the leaves from turning yellow.

Many inexperienced gardeners and vegetable growers don't know why cucumbers and their buds turn yellow in the greenhouse, and what to do about it. But first, it's important to determine the cause of the plant's yellowing before addressing it.