Why cucumber leaves turn yellow: how to process and spray, how to treat

The main reason why cucumber leaves turn yellow is improper care of the vegetable. It can also be caused by pests, diseases or lack of nutrients.

To help the plant and save the harvest, you need to correct the situation in time.

Main causes of the problem

The reason for the yellowing of leaves on cucumbers is usually one of the following adverse factors:

• wrong watering regime, both frequent and rare soil moisture is harmful;
• deficiency of nutrients, especially nitrogen;
• decrease in air temperature;
• hot weather or water getting on the leaves while watering on a hot day;
• fungal or viral disease;
• root damage from transplanting or insect pests.

Why do not all cucumber leaves turn yellow, but only some? If the lower leaves turn yellow, then the following problems should be excluded:

• poor light access to the base of the plant;
• excessive or insufficient watering;
• using cold water for irrigation;
• cold climate;
• micronutrient deficiencies;
• diseases caused by fungi, viruses or bacteria.

If the tips of the leaves turn yellow, this may be due to the following adverse factors:

• infection with a fungal disease (powdery mildew is common);
• dry summer, not enough watering;
• if the leaves turn yellow around the edges, you need to make up for the lack of potassium.

When the leaves turn yellow, the situation most often signals a problem, so you need to take action.

Fight the problem

Why the leaves of cucumbers in the open field can turn yellow is associated with both natural adverse events and errors in courtship.

Vegetable cultivation should be carried out on a site with favorable conditions. In low light, the leaves begin to turn yellow at the base. When cucumber stems grow, light may not reach the inner green part of the plant. In this case, the problem for the crop does not pose any danger. You can simply cut off the bad leaves so that they do not take extra strength from the vegetable.

If a place was chosen for planting cucumbers, where its rays come from sunrise to sunset, a burn may occur. Not only the leaves turn yellow, but also the ovaries. Therefore, you need to choose a place where in one of the halves of the day there is a shadow on the site.

Agrotechnicians give advice: "Plant cucumbers where the sun illuminates the place only until lunchtime."

A common reason why cucumber leaves turn yellow is an unfavorable summer. When the summer is hot and watering is rare, the roots of the plant begin to creep up to the upper layers of the soil. As a result, not only the root, but also the leafy part becomes yellowish. If, on the contrary, the summer is rainy or water is supplied in excess to each root, they begin to rot and the leaves turn yellow.

Sometimes the leaves of cucumbers in the open field begin to get sick with ascochitosis. The disease spreads during the period of fruit formation. Yellow-brown spots appear on the plant, the leaves dry and curl around the edges.

If the leaves immediately after planting began to turn yellow, you need to exclude the appearance of pests. The most common unwanted guests in the cucumber garden are aphids or spider mites. Insects feed on the juice of juicy greens. The veins turn yellow and the tips dry out.

Insecticides (Photosporin, Spark) will help with a massive invasion of pests. If the scale is not too large, you can try natural-based formulations (celandine infusion, wood ash solution and laundry soap).

Fungal diseases such as Fusarium, Pitiosis can be recognized by small yellow-brown spots on the leaves. As the disease spreads, the entire leaf area will turn dark yellow. Protective sprays should be used especially when there are sharp fluctuations in air temperature, for example, after a strong heat it rains.

Cucumbers are very prone to putrefactive diseases. White rot affects the shoots and young fruits of the plant. The problem can be recognized by a white coating, which damages the stem and stops the flow of useful components, the leaves turn yellow and dry out.

How to feed, if cucumber leaves turn yellow, determined by external signs. Nutrient deficiencies in the soil can be recognized by the following signs. The fact that there is not enough magnesium or potassium is indicated by yellowing leaves along the edges, while they dry and wrap.

Yellowish leaves with green veins appear when manganese and iron are deficient. If only the upper leaves turned yellow, and the lower ones remained green, then the plant should be fed with components rich in copper.

Another reason why foliage turns yellow is aging. At the end of the growing season, when the flowers and ovaries cease to appear, the leaves and tops begin to coarsen, turn yellow and dry. Usually by this time the main crop of cucumbers has already been harvested. If you want to extend the fruiting period, then you should use special fertilizers.

Prevention measures

To prevent cucumber leaves from turning yellow, preventive measures should be taken.

1. Cucumber patch should not be planted in the same place every year, nor should it be planted where squash or squash were previously harvested.
2. Be sure to follow the rules of watering. Water only in the morning or evening hours. Especially often you need to water the plant during the formation of flowers and fruits, every two days or even more often if the weather is hot and without rain.
3. If cold snaps are predicted, plants should be covered with foil.
4. Complex fertilizers should be applied regularly. Gardeners recommend: “Feed the plant three times during the entire period of development. More frequent fertilization is needed during the cold and disease season.”
5. It is recommended to treat seeds, seedlings, young shoots from diseases and pests. In time, you need to tear off sick leaves and use the tool to destroy the enemies that have appeared.

If it is not possible to water the plant in a timely manner, mulching can come to the rescue. Straw, peat, sawdust are suitable as mulch. The layer will slow down the evaporation of moisture from the soil, warm in the cold, prevent weeds and reduce the risk of pests.

Rescue actions

The choice of how to water cucumbers so that the leaves do not turn yellow can be stopped on purchased preparations. What to do if cucumbers have yellow foliage? Treatment should be done as soon as yellowing appears. Folk remedies will also help. In order to prevent the problem or quickly get rid of it, several recipes will help how to process cucumbers so that the leaves do not turn yellow.

1. Milk composition with soap can prevent yellowing of the leaves. A liter of milk, soap chips and a few drops of iodine are added to a bucket of water. Processing is carried out every 12 days.Many people use a similar composition: “For the first time, you can apply the composition when the first leaves appear on young sprouts. As soon as you spray the plant, the problem will disappear.”
2. It is recommended to treat the plant from yellow leaves with an infusion of onion peel. In addition, the composition will enrich the soil with nutrients and repel many pests. Onion peel is poured with hot water and put on fire until it boils. After that, the liquid is left to infuse for 12 hours. The resulting solution is filtered and diluted with water in a ratio of 1:4. The composition can be sprayed on the leaves and watered under the root.
3. A solution of potassium permanganate is used at the first manifestations of yellowing of cucumber leaves. Positive reviews about this solution can be found everywhere: “I treat with potassium permanganate not only adult plants, but also seeds before planting. For sowing, I select only large and dense seeds.”
4. To make the leaves turn green again, you can use herbal infusion.The ideal option is nettle, which will enrich the soil with iron, potassium, magnesium. Crushed grass stems are poured with water and left to ferment for several days. Soap shavings are added to the prepared solution and vegetable beds are watered.
5. What else can you spray the beds with? To prevent fungal diseases, it is useful to spray the plant with a soda solution. 30 g of soda is added to a large bucket of water. It is advisable to water at the beginning of summer.
6. You can fill the ashes with water and leave to infuse for a week. Before watering, the concentrate must be diluted with water. You can mix it with other ingredients or simply sprinkle it on top of the soil, only after that it needs to be watered.

The cause of yellowing leaves in cucumbers is often a lack of trace elements. Throughout the growing season, it is recommended to make at least three top dressings. When the leaves turn yellow on cucumbers, it is useful to feed by spraying the ground part of the plant.

How to feed cucumbers to avoid problems with growing vegetables and get a rich harvest? The first feeding should be done when the leaves begin to unfold. The second dressing is applied as soon as the third leaf appears. You can use organic or mineral fertilizer.

Vegetable growers prefer to fertilize with mullein at all stages of vegetable development. Manure is poured with water (1:5) and left to infuse for 5-6 days. During this time, the nitrogen will pereprete and become absolutely harmless to the cucumber. Wood ash can be added to the solution to increase efficiency.

It is useful to make top dressing from bird droppings. Useful as a dry litter, or prepare an infusion. Bird droppings, filled with water, insist about 1.5 weeks. Such a solution is especially useful during the rapid formation of ovaries. Before watering, the solution is once again diluted with water.

If the leaves turn yellow, a recipe based on dry or live yeast is suitable.The yeast solution strengthens the root system, activates the activity of beneficial bacteria in the soil, and increases productivity. Once a week it is useful to spray on plants or water with a watering can with a prepared solution. The leaves will stop turning yellow, and the cucumbers will be even and juicy.

You can spray cucumbers with purchased preparations. The instructions will help you choose which one is best for you. Ovary, Pollen, He althy, Good power helps to get rid of yellowness. These drugs increase the resistance of plants to diseases, repel pests, and saturate the soil with nutrients.

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