Cucumber leaves turn yellow around the edges: why and what to do

Cucumber is a rather delicate plant that immediately begins to react to improper care, temperature changes or unsuitable soil. That is why many vegetable growers are faced with the problem when cucumber leaves turn yellow at the edges. Having found the first signs of such changes on the bushes, it is necessary to immediately start treating cucumbers.

Why leaves turn yellow

Before you start fighting the yellowing of cucumber leaves, you need to familiarize yourself with the main causes of this problem.

Temperature fluctuations

Quite often, yellow spots appear on the leaves of cucumbers due to the fact that the bushes are grown in unstable temperatures. Cucumbers love warmth and therefore, due to sudden changes in temperature, the edges of the leaves of cucumbers can not only turn yellow, but also stop their growth.

When growing seedlings in a greenhouse, you must carefully monitor the temperature in the room. It should not be too high, as this activates the development of bacteria and leads to root rot.

Unsuitable growing area

Sometimes the leaves of cucumbers begin to change color due to an unsuitable place for growing vegetables. So that cucumbers do not have any diseases, it is necessary to choose areas with good lighting for their cultivation. However, this plant also needs shade. Therefore, it is necessary to choose a place in the garden that would be partially shaded so that the cucumbers do not get hot and their leaves do not turn yellow.

Nutritional deficiency

It is known that cucumbers are demanding on the soil and therefore if there is not enough nutrients in it, then the leaves of cucumbers turn yellow and dry.Most often, this problem appears due to a lack of nitrogen supplements. With a lack of nitrogen, the lower leaves begin to turn yellow and the fruits curl.

When the above signs appear, 3-4 buckets of last year's manure should be added to the soil. Too much manure should not be added to the soil, as this can lead to the death of the plant.

Irrigation

Some vegetable growers attribute the appearance of yellow plaque on the leaves to improper watering. Most often, the edges of the leaves turn yellow in cucumbers with insufficient moisture in the summer. However, sometimes such a problem appears due to the wrong watering regimen. After all, many people prefer to water vegetables little and often. In this case, the liquid simply will not be enough to penetrate into the deep layer of soil where the roots of the cucumbers are located. This leads to the depletion of the root system and the gradual appearance of yellow spots on the leaves on the cucumbers.

Powdery mildew

Sometimes the plant turns yellow after the appearance of powdery mildew. It is quite simple to determine such a disease in cucumbers. First, white spots appear on the lower leaves of cucumbers. After a week, the disease gradually spreads to the leaves located in the upper part of the bush. First, their edge begins to turn yellow, and then the leaves dry up. If powdery mildew is not cured in a timely manner, then all the leaves will fall off and the plant will die.

You can get rid of the disease with the help of Zaslon or Topaz. They are recommended to be used before the formation of the first fruits on the bushes.

Fusariosis

Another reason why a yellow border appears on the leaves is Fusarium. Because of this fungal disease, all the capillaries of plants are blocked, which complicates the supply of nutrients to the leaves.In most cases, even timely treatment of the disease does not help save the infected bushes, and they die. Therefore, it is recommended to get rid of a bush that begins to turn yellow in advance so that the disease does not spread to he althy plants.

What to do when bushes turn yellow

Having figured out why yellowed leaves may appear in cucumbers, it is recommended that you familiarize yourself with the main methods of treating yellowness. There are several fairly common remedies that will help remove the yellowish tint from cucumbers.

Fitosporin

If a cucumber leaf has a yellow spot, then it can be sprayed with Fitosporin. It helps to quickly eliminate yellowness and cure the plant of many diseases. This drug is recommended to be used during flowering or vegetation, as during this period it is better absorbed by plants.

Before using Fitosporin to treat bushes, you need to make a working solution. To do this, add about 15-20 grams of the drug to five liters of boiled water. The resulting liquid is mixed and infused for 30-40 minutes. Cucumbers are sprayed once a week for a month. It is not recommended to do this in cloudy weather, as rain will quickly wash Fitosporin off the leaves.

Oxychom

Many gardeners, when cucumber leaves turn yellow, spray them with Oxyx. This is a fairly effective tool with which you can quickly get rid of diseases at any stage of their development. You can use Oksikhom not only on the street, but also in greenhouses.

The drug is available in powder form, before processing cucumber seedlings, it is necessary to prepare a working solution. During its preparation, about 20-30 grams of Oxychoma is added to 10 liters of water.The created mixture is sprayed onto the surface of the leaves with a spray gun twice a month. The interval between each spraying should be about 14-15 days.

Topaz

When the leaves have a light edging along the edge, you should use the Topaz fungicide. With this tool, bushes can be cured of powdery mildew and other diseases caused by fungal bacteria. Topaz can be used not only for the treatment of already infected seedlings, but also for prevention.

Fungicide is available in different forms, but it is recommended to buy Topaz in powder form. To prepare a solution from it, 20 grams of the drug is added to 10 liters of water. During processing, about two liters of Topaz should be consumed per square meter of land. Spray the plants twice a month. If after that the yellow border does not disappear, then the use of the drug is extended for another month.

Quadris

If the rims on the edge of the leaves turn yellow, then you can get rid of this problem with the help of Quadris. The fungicide was developed to combat yellowness and protect vegetables from disease. With it, you can get rid of oidium, late blight and powdery mildew. Quadris penetrates the leaves immediately after spraying and protects them from further pathogen attacks.

Before applying Quadris, you will have to start creating a working mixture. To do this, a quarter of a 10 liter container will have to be filled with water. Then 200 ml of Quadris is added to the liquid. The solution is thoroughly mixed, after which another 2-4 liters of water is added to the container. The prepared mixture must be used within 24 hours, since then it will not be possible to process vegetables with it.

It is recommended to process cucumbers in the complete absence of wind so that the liquid does not spray neighboring crops in the garden.

How to feed cucumbers

It is recommended to regularly feed cucumbers with nitrogen fertilizers, because due to their lack, the leaves begin to change their color. At the same time, fertilizing from nitrogen must be done not very concentrated, so as not to accidentally burn the bushes. To prepare a feeding solution, add 20-30 grams of fertilizer to 5-7 liters of water. After applying nitrogen fertilizers, cucumbers should be watered with warm water.

Foliar top dressing can also be carried out with the help of nitrogen. In this case, the solution will be sprayed onto the bushes using a spray bottle.

Conclusion

It's no secret that the edges of the leaves often turn yellow in cucumbers and this leads to the death of the plant. Beginning vegetable growers do not know how to deal with the yellowness of the leaves.To get rid of this problem, it is necessary to identify the causes of yellowing and find the most appropriate means to combat it.

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