Why cucumbers turn yellow

Cucumbers turn yellow

Often, gardeners on their site can see yellowed cucumbers. This phenomenon has several explanations: cucumbers are fully ripe, improper growing conditions (little moisture at high temperature, lack of nutrients, low night temperatures with frosts), diseases that cause fungi or parasitic insects. Consider why the yellow leaves of cucumbers and all the factors that affect it.

We do not know if we eat uncooked cucumbers. When the cucumber completely ripens it turns yellow, it is not eaten due to the fact that it has a bitter taste that appears through the processes occurring inside the fruit, in which the pulp is saturated with juices of potassium, magnesium and iodide compounds. Cucumber juice in this state is a kind of medicine, so it is often used in pharmacology.

A good gardener knows that cucumbers love water, so even a minimal lack of moisture can lead to yellowing of the fruit or ovary. Plants are better to warm up with warm, preheated in the sun water, cold water leads to illness or yellowing. If the leaves of cucumbers turned yellow in the early spring, then this effect can cause frost or a lack of nitrogen. Later Need to feed cucumbers during flowering And even fruiting.

Cucumber leaves turn yellow, how to fight

Powdery mildew appears on leaves in the form of light spots of small size. After a while they increase and completely cover the surface of the leaf with a white coating, eventually it turns yellow and dries. This means that the plant has infected the fungus, which actively multiplies and slows down the process of cucumber life. The likelihood of the same disease for the next season is very high, so produce a crop rotation or sow cucumber resistant to this disease. It is necessary to fight at the first stages of the development of the disease with the following drugs: Karatan, Bayleton, and others.

Root rot can be infected with adult plants or seedlings. The disease occurs when there is a significant difference in temperature during the day and at night or by making waterings using cold water. The disease is often manifested in weak plants, transmitted through the soil. For prevention, the basal region is treated with "Previcurus" two times at intervals of two weeks.

Fusarium is also caused by a fungus, its spores are clogged with capillaries of the culture, which prevents the access of useful substances to the plant. They excrete toxins, and the plant dies, this disease affects culture at any stage of development.

Powdery mildew can be called a virus for cucumbers - this is the most common disease. When this mushroom is affected, the ovary and leaves of cucumbers turn yellow, and later shrink and die. Usually the peak of infection begins in July and comes to September. If the disease appeared simultaneously with the beginning of fruiting, then the crop can not wait. Symptoms of the disease appear on the inside of the leaves in the form of dark green acute-angled spots. The disease progresses rapidly and spreads, especially in rainy weather. For the prevention of using a variety of means with an interval between treatments - 7-10 days. The first time - Bordeaux mixture, the second - "Bravo", "Avixil", etc. Processed in dry weather before sunset.



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