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Yellowing cucumber leaves: what caused the problem and how to solve it

 Yellowing cucumber leaves: what caused the problem and how to solve it


Cucumbers are quite delicate and capricious plants that react to even minor mistakes in care with a deterioration in appearance. One of the most common symptoms is yellowing leaves. There are many reasons for this - pest attacks, diseases, improper agricultural practices, and nutritional deficiencies.

Why do cucumber leaves turn yellow

The yellowness of cucumber leaves is a fairly common problem. In order to correctly determine the cause of the deterioration in the appearance of plants and take effective measures, it is necessary to assess the condition of the plant as a whole, taking into account the accompanying symptoms.

Most often, yellowness is explained by the following:

  • Water scarcity. Cucumbers are more than 90% water, so it is obvious that they need frequent and abundant watering. If the plant lacks moisture, it directs it to provide ripening fruits at the expense of the green mass. Leaves turn yellow and dry.
  • Lack of nutrients. Deficiency of specific macro- and micronutrients manifests itself in different ways. It is quite easy to determine this by simply examining the plant.
  • Lowering the temperature. Initially, the cucumber is a heat-loving southern plant, poorly adapted to cold weather. A natural response to the stress experienced is the yellowness of the leaves.
  • Sunburn. When water drops fall on the aerial part of the plant, the tissues under the influence of the sun's rays burn and die off (the drops act as lenses). Yellow spots appear on the leaves.
  • Diseases and pest attacks. The symptom is characteristic of many fungi, provoking pathologies of the plant's conducting system, which can no longer provide the green mass with water and nutrients, and pests sucking juice from the leaves.
  • Mechanical damage to the root system. They can be gnawed by bears, moles, and so on. Either the gardener himself is to blame, inaccurately conducting loosening or transplanting.
  • End of the growing season. Cucumber, like any plant, has a period of "productive life" of a certain duration. When it ends, the aerial part of the plant dies off, this is natural.

Cucumber leaves can turn yellow for a variety of reasons; both harmless enough and very serious

In most of the cases described, it is enough to adjust the care, and the problem will disappear by itself. Only diseases and pests require purposeful control.

Video: the most common causes of yellowness on cucumber leaves

What does the affected plant look like?

If the leaves not only turn yellow, but also curl, this may mean:

  • Powdery mildew infection. This symptom manifests itself already at a late stage in the development of the disease. At first, the leaves are covered with a whitish coating, reminiscent of flour. For the prevention and control of the fungus, copper-containing preparations (fungicides) are used. The safest for humans and the future harvest are substances of biological origin (Fitosporin, Baikal-EM, Bayleton, Maxim).
  • Pest attack. Most often these are aphids and spider mites, in a greenhouse - a whitefly. Aphids and whiteflies are easy to detect visually, a spider mite is easily identified by the presence of a thin "web" encircling the plant. To combat insects, general-purpose insecticides are used (Mospilan, Commander, Tanrek), to scare them away - any sharp-smelling infusions. Special preparations are used against spider mites - acaricides (Neoron, Apollo).
  • Exposure to high or low temperatures. For example, seedlings grown on a window can come into contact with cold window glass, cucumbers in greenhouses and greenhouses - with polycarbonate heated in the sun.
  • Decreased air humidity. The leaves turn yellow when it is dry, the plant tries to reduce the area of ​​evaporation by folding the leaf plates with a tube. The only way out when growing outdoors is timely watering. In the greenhouse, you can raise the humidity by placing several containers of water.

It is problematic not to notice aphids on cucumbers - insects settle on a plant in whole colonies, feed on its juice - the leaves first become covered with small translucent dots, then turn yellow and dry

Often only the lower leaves are affected. This is explained by the fact that the plant undergoing stress strives to provide everything necessary, first of all, the most "promising" parts - the ovary and the growing point with the upper leaves. Many diseases also develop from the bottom up - fungi also spread through the soil. The yellowness of the lower leaves is provoked by:

  • Natural aging of the plant.
  • Lack of light. The sun's rays are simply unable to break through the dense green mass. The lower leaves gradually turn into unnecessary "ballast" and die off.
  • Improper watering and hypothermia.
  • Fusarium-causing fungus. This is one of the most dangerous diseases for culture. The aboveground part dries up and dies off in just a few days. Due to the rapidity of development, it is almost impossible to detect infection at an early stage, therefore, the fight against it is pointless. Affected plants are simply removed from the garden, the soil is disinfected. For prevention, use any fungicides, a bright pink solution of potassium permanganate, an infusion of wood ash.

The lower leaves of the cucumber bush "consider" the least significant and promising, therefore, if the plant is not satisfied with something in the conditions of detention, they are the first to suffer

The opposite situation is also possible. Not only the lower leaves turn yellow, but also the ovaries, in general the whole plant. This may be due to:

  • Lack of light when choosing the wrong place for planting. Cucumbers simply won't survive in the shade.
  • Hypothermia. If the temperature at night stays below 15-18 ° C for a long time, the ovaries fall off. The required minimum for their normal development is 23 ° C during the day and 20 ° C at night.
  • Deficiency of nitrogen and potassium. The first is necessary for plants in the early stages of development for active growth of green mass, the second for normal fruiting. With frequent watering, which is required for cucumbers, macronutrients are gradually washed out of the soil, it is necessary to fill the deficit.

If the yellowness captures not only the leaves, but also the ovary of the cucumber, this means serious flaws in agricultural technology or the conditions of detention that do not suit the plant at all

If only the tips and edges of the leaf plates have turned yellow, this may be:

  • Early stage of development of downy mildew. The leaves turn yellow, starting from the tips, at the same time the wrong side is tightened with a greyish-lilac bloom. This reason is most likely if the weather is cool, rainy.
  • Moisture deficiency due to dry air and poor watering. First, the edges of the leaves dry, then they roll up into a tube.
  • Lack of potassium.

Potassium is one of the macronutrients vital for cucumbers; with its deficiency, you can not count on a good harvest

Where are cucumbers grown

The problem of yellow leaves is not bypassed by cucumbers planted in greenhouses. Here, most likely, you just need to create optimal conditions for the plants. At the same time, consider the possibility of developing diseases. Humid stale air is a suitable environment for many fungi:

  • Improper watering. Often, gardeners do not take into account the weather outside.
  • Higher temperature than cucumbers need. The optimal daytime value is 25-27 ° C, nighttime - 21-23 ° C. Overheating and hypothermia can provoke yellowness.
  • Lack of fresh air. Airing is especially important in hot weather. Otherwise, the plants will simply "roast".
  • Too poor soil. Greenhouse cucumbers tend to yield higher yields and therefore require higher doses of nutrients.
  • Excessive thickening of the landings. In the greenhouse, if the planting scheme is not followed, cucumbers often form impassable "jungles". This means a lack of light and favorable conditions for the development of diseases.

The supply of fresh air is vital for the cucumbers, and ventilation also helps to regulate the temperature in the greenhouse.

Specific problems that cause yellowing of the leaves also occur with cucumbers planted in the open field:

  • A sharp cold snap. Take your time to plant cucumbers in the beds. If a drop in temperature is predicted, cover the bed with a covering material.
  • Too poor or excessively abundant watering (the latter provokes the development of rot, one of its symptoms is "wet" and yellowing leaves).
  • Wrong watering time. If you do this during the day, water droplets turn into lenses, causing sunburn.

If frosts are predicted after planting cucumbers in the ground, take care in advance to protect the bushes from low temperatures

Seedlings may also suffer. The yellowing leaves of seedlings are due to:

  • cramped containers for seedlings or lack of substrate in them;
  • high air humidity;
  • low temperature, cold drafts;
  • unsuitable soil (quality, air permeability), nutrient deficiency;
  • improper watering;
  • the development of the "black leg" (provoked by an excess of water in combination with a low temperature - a dark "constriction" appears at the base of the stem, the plant lays down on the ground, gradually turns yellow and dries up).

Seedlings of cucumbers are even more sensitive to conditions of detention than adult plants, therefore, most often the gardener himself is to blame for the fact that the leaves of the seedlings turn yellow.

Video: why cucumber seedlings turn yellow

Yellowness on the leaves with spots

Yellow spots on the leaves are most likely a sign of disease or pest attacks. To combat pathogenic fungi, fungicides are used (treatment scheme and solution concentration - according to the instructions). Insecticides are used against insects; folk remedies are often enough to prevent the appearance of pests.

  • anthracnose (rounded yellowish-brown spots, at high humidity, covered with pinkish "pads", on the petioles and leaves - dark depressed "ulcers");
  • downy mildew;
  • powdery mildew;
  • root rot (softening "weeping" stem bases, yellow-brown spots on the leaves);
  • mosaic virus (yellow spots on the leaves add up to a kind of stained glass).

There is currently no cure for the mosaic virus; this disease will not kill the plant, but its development will sharply slow down, and the yield will drop

Video: typical diseases of cucumbers

What to do for prevention

It is easier to prevent any problem than to deal with the consequences. For the prevention of yellow leaves, cucumbers can be treated with the following solutions (every 15–20 days). They have a general strengthening effect, make plants less susceptible to the vagaries of the weather and gardener's mistakes, and help to avoid fungal infection and pest attacks:

  • a liter of milk and 30 drops of iodine per 10 liters of water;

    A mixture of milk and iodine is an effective prevention of many fungal diseases

  • a loaf of crumbled black bread, a bottle of iodine (pour a bucket of water overnight, strain before use, dilute 1:10);

    Black bread is a source of yeast, the described solution activates the development of the plant and makes it less capricious and sensitive

  • a liter jar of onion husks (pour 10 liters of water, boil, let it brew for 12-15 hours, strain, dilute with water 1: 4);

    Many gardeners collect onion skins all winter - they are widely used in the garden.

  • potassium permanganate (1% solution);

    Potassium permanganate solution is one of the most common and affordable disinfectants

  • a tablespoon of baking soda or soda ash per 10 liters of water.

    The scope of application of baking soda is by no means limited to cooking.

Video: how to process cucumbers so that the leaves do not turn yellow

One of the most common causes of yellow leaves is a lack of fertilizer:

  • nitrogen (leaves turn pale, then turn yellow, shrink, lengthen unnaturally);
  • potassium and magnesium (there is a thin yellowing border along the edge of the leaf, it gradually dries);
  • copper (mainly the upper leaves turn yellow);
  • manganese and iron (sharply distinguished dark veins on a yellowish background).

Based on what the plants lack, and choose top dressing. Macronutrients can be applied both separately (for example, urea, superphosphate, potassium sulfate, magnesium sulfate, iron chelate), and as part of complex purchased fertilizers. The latter option is preferable, since it takes into account the specific needs of the culture in microelements. Adherents of natural agriculture at the beginning of the growing season can use "green infusion" (raw materials - any garden weeds, most often - nettle, dandelion leaves) or infusion of cow dung, bird droppings, after the formation of ovaries - wood ash in dry form or as an infusion.

Complex fertilizer is the best option for cucumbers, especially for modern hybrids

Correct watering is no less important for prevention. Let the soil dry 8-10 cm deep, consider what the weather is outside, how long has it rained.

Proper watering is one of the most important agrotechnical measures for cucumbers and effective prevention of yellow leaves

The most likely explanation for yellowed leaves in cucumbers is errors in agricultural technology and / or deviations from optimal growing conditions. In this case, it is enough to adjust the care, and the problem will be solved by itself. But there may be other reasons, more serious. Therefore, such a symptom should not be taken too lightly.

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Why do cucumber leaves dry

If you notice that the leaves of the cucumbers are slightly planted in the daytime, and at night they have taken their original position again, then do not worry - this is a natural process, thus the plant reacts to the heat. This can be avoided only by more frequent watering, and it is advisable to water it not only in the evening, but also in the daytime, after which it is required to close the cucumbers from direct sunlight.

One of the most common causes of cucumber leaves drying out is overfeeding with fertilizers. In this case, water will help to save the plants. Water the cucumbers abundantly with warm water, it will significantly reduce the concentration of fertilizers in the ground (i.e. dilute) and the plants will avoid death.

The most common cause of drying of the lower leaves of cucumbers is root rot. Adult plants most often suffer from this disease: yellowing and wilting of the lower leaves are observed in cucumbers, while the root parts of the stems turn brown and grind, which leads to the complete drying of the plant. The causative agent of this disease are fungi of the Fusarium genus, therefore, to save the cucumbers, either disinfection of the soil (for example, with the biological product "Trichodermin") or its complete replacement is required.

Not only viruses, but also common aphids can harm the plant. Take a closer look at the drying leaves, especially carefully examine their lower part: if you see tiny translucent or dark bugs on them, then this is aphid. There are many drugs that successfully combat these pests, buy one of them and use it as indicated in the instructions. Popular recipes against aphids have also proven themselves well:

- infusion of celandine (pour 200 grams of dry leaves of celandine with 10 liters of water, let it brew for a couple of days, then spray the resulting infusion of the plant)

- infusion of wood ash (pour two glasses of ash with 10 liters of water, add half a piece of shaved laundry soap, stir, let it brew for a couple of hours, then spray the resulting infusion of cucumbers).


What to do if the leaves of cucumber seedlings turn yellow

There are certain rules and recommendations that are followed when the leaves of cucumbers turn yellow and dry:

  • feeding
  • watering regulation
  • the effect of light and heat on young seedlings
  • landing errors
  • protection against diseases and pests.

Top dressing

For the correct growth of a dicotyledonous plant, feeding is important during the entire period of growth and fruiting. The first feeding with organic fertilizers occurs after the cucumbers are planted in open ground. In the future, in order to understand what fertilizers need to be applied, it is necessary to look at what place the leaves begin to turn yellow and dry. For example, if the plant lacks potassium and magnesium, then the edges of the leaves of the seedlings of cucumbers dry out. If the yellowing begins from the top, then it lacks copper, and if the entire leaf turns yellow with green veins, there is little manganese in the soil.

The photo shows how the leaves of seedlings turn yellow, depending on the lack of a certain micro- and macroelement.

Top dressing is carried out according to the following scheme: at the beginning of summer, the bushes are fed with nitrogen fertilizers, and at the end of summer - with potash fertilizers. Humus or compost are used as organic fertilizers. One kilogram is enough for a bucket of water. The bushes are watered with this solution. For inorganic feeding, 2 tbsp is diluted in 10 liters. tablespoons of superphosphate, 1 tbsp. spoon of urea and 250 ml of ash. This fertilizer will be enough for 1 sq. m.

Watering regulation

If the problem of yellowness is in improper watering, then you need to build a new schedule. In this case, one should take into account the type of soil, in what condition the seedlings are, as well as weather conditions. If the soil is dry, then it should be moistened with settled warm water. If the soil is very moist, then the excess moisture can be removed with an absorbent material such as paper or cloth. If possible, river sand is poured into the garden bed. Watering should be 3 times a week and this should be done at the root, try not to get on the foliage.

Influence of light and heat on young seedlings

If the leaves of cucumber seedlings turn yellow, then it may not have enough light. This may be due to a violation of the planting scheme: the rows must be one meter wide, and in the rows the distance between the bushes should be 55 cm.With this scheme, each bush will be well ventilated and receive enough light.

Temperature also affects the health of the dicotyledonous plant. With a sharp decrease in it, the roots are damaged, due to which the bush does not receive a sufficient amount of nutrients and dies. Transplanting the cotyledon into open ground should take place when the night temperature is at least +12 degrees.

Landing errors

The leaves of cucumber seedlings may turn yellow initially due to improper planting. Therefore, before forming a cucumber bed, you should take into account the neighbors for a dicotyledonous plant, do not overdo it with fertilizers and follow the scheme for planting seedlings in the ground. It is important to harden the seedlings before planting for seven days. The garden bed itself must be changed to a new one every year, and to return to the old one after 4 years.

Protection against diseases and pests

Cucumbers can become infected with powdery mildew, root rot, fusarium or pernosporosis. In this case, Previkur preparations are used - for root rot, Topaz or Fitosporin - for powdery mildew. You can spray the plant and the soil around it with a 1: 1 solution of baking soda and water. To prevent a diseased bush from infecting a neighboring one, it should be removed.

Yellowed seedlings can also speak of a pest attack. Most often these are spider mites and aphids. To combat them, pesticides are used: Aktara, Akarin, Fitoverm, Thunder, etc. The solution is made according to the instructions on the package.

How to process cucumber seedlings when yellowing

You can stop yellowing of the leaves or completely prevent this process with the help of some solutions:

  1. With milk. 1 liter of the drink is diluted with 10 liters of water. Add 30 drops of iodine and 20 g of shavings of laundry soap. The leaves are processed for 10 days.
  2. On bread with iodine. A loaf of bread is soaked in 10 liters of water for 12 hours. Knead the bread and add 1 bottle of iodine. A liter of the resulting substance is diluted in one bucket and the bushes are sprayed every two weeks.
  3. Potassium permanganate. Use a 1% spray solution.
  4. On onion tincture. 0.8 liters of onion peel infusion are added to 10 liters of water and put on fire. As soon as it boils, the solution is removed and covered tightly with a lid for infusion. After 13 hours, the solution is filtered and diluted with water in a 1: 4 ratio.

Bushes are sprayed with such solutions, starting with the upper leaves and ending with the lower ones. And what is left is poured under the bushes.


Lack of fertilizers

If there is enough moisture in the soil, and the leaves turn yellow, then the plants need to be fed. So, it is known that during the period of active growth, cucumbers must be fed with nitrogen fertilizers, if they are not available, then the leaves will begin to turn yellow.

At the beginning of the yellowing of the foliage, you can try to feed the cucumbers with ammonium nitrate, dissolving 25-30 g in a bucket of water. The consumption rate of such a solution is approximately 1.5-2 liters per square meter. It is advisable to feed the cucumbers 2-3 times, paying attention to the condition of the leaf blades. In the event that the yellowness of the leaves has not subsided, you can feed them with a solution of nitroammophoska by dissolving a tablespoon of this fertilizer in a bucket of water. Consumption rate - 3-4 liters per square meter of soil.

In the event that the cucumber leaves not only begin to turn yellow, but can still curl, then this most likely indicates a significant nitrogen deficiency in the soil. It is possible to understand that this is precisely a lack of nitrogen by the direction of the curl of the cucumber leaf blade, if it curls downwards, then this is definitely a nitrogen deficiency.

It is possible to compensate for a sharp nitrogen deficiency by introducing ammonium nitrate into the soil in an amount of 15-18 g per square meter, having previously dissolved it in water. You can treat the cucumber plants themselves with ammonium nitrate in the evening, dissolving 8-10 g of this fertilizer in a bucket of water. This will be foliar feeding, which can have a positive effect.

Yellowing of leaves due to lack of nitrogen. © drduhgylie


What to do when cucumbers turn yellow

Having figured out the reasons for the appearance of yellow leaves, you need to understand what to do, how to spray and how to water cucumbers in order to correct the situation.

In the greenhouse

Plant according to the pattern recommended by the seed manufacturer. This will avoid shading the leaves and lack of light. If it was not possible to avoid the formation of too dense vegetation, it is recommended to thin out the plantings and open the greenhouse, if possible.

Attention! In greenhouses, only self-pollinated varieties of cucumbers are grown, since pollinating insects cannot normally penetrate inside and perform their function.

It is recommended to ventilate the greenhouse if the weather is hot outside, and do not forget to close it at night if there is a risk of a cold snap - this will provide the necessary temperature regime. In order to avoid the appearance of fungal diseases, it is recommended to apply fungicides to the soil according to the manufacturer's instructions.

In the open field

The most common causes of yellowing of plants grown outdoors are: the development of diseases, hypothermia and pest activity. To cope with these problems, you must:

  • cover the culture at night with any covering material if there is a risk of a night cold snap below + 15 ° C
  • to combat fungal diseases, they are treated with fungicides (according to the instructions): Trichodermin, Quadris, Planriz, etc.
  • to control pests, use insecticides, for example, Inta-Vir, or add slaked lime and ash
  • remove weeds and plant debris in time.

When the root system decays, it is almost impossible to save the plant - it is easier to transplant. Plant residues affected by viral diseases must be burned.

Seedlings

The main reasons for seedlings yellowing are small trays, lack of light and moisture. To correct the situation, you must:

  • transplant seedlings into larger trays
  • additional lighting in the early morning and evening can be provided with fluorescent lamps. The main thing is not to put artificial lighting too close to the plants - the distance should be at least 30-40 cm
  • if the seedlings are near the battery, it is recommended to put a rag on the radiator, which should be regularly moistened with water.

If the seedlings are grown on a windowsill, then it is better to choose a window on the south side for this.


Step one - comprehensive diagnostics

When dry, dark leaf tips appear on a plant, one usually thinks of too dry air right away. Insufficient humidity is indeed the most common cause of this phenomenon, but far from the only one. And misdiagnosis, exclusion of a whole range of other possible factors from the assumptions can turn into a big disaster. After all, if you try to increase the humidity of the air when the earthen coma is waterlogged, which led to stem rot, you can achieve the opposite results.

In addition to insufficiently high humidity, the tips of the leaves can dry out:

  • watering with poor-quality water, especially hard and not settled (dry ends in this case - burns from salts)
  • violation of the comfortable moisture content of the substrate in the container - too intense waterlogging or prolonged drought
  • the spread of pests, the depressed state of the infected plant
  • improper feeding - lack or excess of fertilizers
  • hitting the plant with direct midday rays or too bright lighting for crops that prefer shading
  • too hot conditions, high air temperatures (especially during wintering)
  • complete filling of the free soil with rhizome, which has become a cramped container.

And in order to accurately diagnose the cause, it is necessary to take a responsible approach to the process of assessing the state of the plant, in which it is better to move from the opposite, by the method of exclusion:

  1. Look closely at the plant, especially the shoots and undersides of the leaves, for signs of pests and other signs of impaired growth.
  2. Check if the container is too tight and if roots are showing up from the drain hole.
  3. Determine the moisture content of the substrate, the degree of drying between treatments. If you find it difficult to assess just by touch, buy special indicators from a flower shop that will show how dry the soil is.
  4. Analyze the feeding schedule and compare it with the recommended one for a particular plant. Citrus fruits, for example, tend to dry out when iron is deficient. And in most non-flowering crops, too frequent feeding can cause serious developmental disorders, including at the initial stage manifested in drying tips.
  5. Analyze the water quality. If you use running tap water, then this is the most likely reason for the drying of the leaves: it contains impurities of fluorine and chlorine, salts and other unpleasant heavy substances that lead to a violation of the characteristics of the soil and change its balance.
  6. Determine the humidity of the air, its dryness and comfort for moisture-loving species.

A deviation by one point will reveal the main reason for the drying of the tips of the leaves, by 2 or more - it will indicate the need for complex measures.

The tips of the leaves of Sander's dracaena dry out. © Kim


General guidelines for maintaining leaf health

The health of leaves and fruits can be preserved if the crop is properly looked after.

Compliance with the rules of crop rotation

The main problem of most summer residents is the wrongly chosen area for planting. Cucumbers are more often planted in a greenhouse than in open ground, and it is not always possible to move it around the garden plot. Hence, a problem arises in crop rotation, when cucumbers grow in one place for 3-4 years or more. Fungi and insects hibernating in the remains of vegetation begin their activity at the beginning of each spring, infecting young greenery.

To get a healthy and bountiful harvest, it is important not only to choose your area carefully, but also to leave space for air circulation and access to lighting. Wind is the best prevention of decay of aboveground green mass.

Pay attention to vegetables planted next to cucumbers. There are vegetables and flowers that ward off pests with a smell. For example, dill, garlic, onion, eggplant and others.

Watering rules and the use of dressings

The root system of cucumbers is not very deep, but moisture-loving. It is important to find a middle ground so as not to lead to excess water, which will lead to decay. Overflow makes the fruit watery and the taste insipid.

After watering, the roots require loosening in order to oxygenate the earth. Remember to remove weeds from the soil. This will help reduce the chance of fungal pathogens emerging.

It is necessary to water the cucumbers after sunset, but morning irrigation of the land is allowed before the start of the heat. It is necessary to ensure that the direct rays of the sun do not fall on not dried leaves.

Top dressing strengthens the plant's immunity. Complex fertilizers facilitate easy adaptation when transplanting seedlings to a permanent growing area. Cucumbers should get enough nitrogen, potassium, phosphorus and others. Their optimal ratio is calculated in ready-made dressings, which can be bought at a gardening store. The dosage is calculated depending on the area of ​​planting and is indicated on the packages.

Prevention and treatment of diseases and pests

To prevent yellow and white spots from appearing on the leaves of cucumbers, the seeds must be treated before sowing in a solution of potassium permanganate or other drugs that inhibit the growth of bacteria.

Cucumbers turn yellow in the greenhouse often due to bacterial diseases. Therefore, disinfection of the premises, as well as equipment, will benefit the plants.

Tying the stems to the trellis helps to avoid infection. We must not forget about tillage. Annual digging with the introduction of fertilizers and preparations for the destruction of pests can increase the amount of harvest in the new season.

Folk remedies against yellowing

The folk methods of getting rid of the yellowness of the leaves should be treated with caution. If there is not a lot of experience in growing, then any agent should be carefully dosed.

Popular measures of struggle include the following:

  • from fungal diseases mix 10 liters of water + 1 liter of milk + 25 drops of iodine + a handful of grated laundry soap; spraying is done every 2 weeks until the color of the leaves is restored
  • deliverance from whitish spots: a bucket of water + 2 liters of whey + 1 tsp. copper sulfate
  • from torangers deterrent infusions of garlic: pour a handful of garlic into 1 liter of water, leave overnight, in the morning dilute the liquid with a bucket of water spray once every 10 days
  • onion peelrepels insects: pour a few handfuls of husks with boiling water and let it brew; spraying or watering with infusion is allowed
  • for prevention a weak solution of potassium permanganate is prepared: crystals of potassium permanganate are added to a bucket of water at the tip of a knife.

Potassium permanganate as prevention of diseases

Each gardener decides how to treat and how to process cucumbers, depending on the complexity of the problem. If you do not start the disease, then the chances of getting a generous harvest are high.

Safe and effective remedy for cucumber treatment


Watch the video: Reasons Your Plants are Turning Yellow + How to Fix It