home > Plasterboard > The onion turns yellow and dries what to do. Why does the feather of the onion wither what to do. Onions turn yellow: how to water and feed, chemical and folk remedies, so that the tips of onion feathers do not turn yellow. Fungal and biological diseases

The onion turns yellow and dries what to do. Why does the feather of the onion wither what to do. Onions turn yellow: how to water and feed, chemical and folk remedies, so that the tips of onion feathers do not turn yellow. Fungal and biological diseases

Finding a gardener in our latitudes who does not grow onions on his plot is not an easy task. But it is even more difficult to find that lucky one who never in his entire career as a backyard farmer would have asked the question why, despite all the weeding, feeding and watering, this censored onion turns yellow in the garden, without any twinge of his onion conscience? Agree, this is really very offensive. Especially if this is not the first time this has happened. And then the gardeners wonder how to water the onion so that it does not turn yellow. For those who prefer to contemplate freshly picked green onions in a delicious summer salad, we have prepared this useful material.

Onions are perhaps one of the oldest cultivated plants known to our civilization. The first mentions of onion cultivation date back to the 4th millennium BC. It is known for certain that in ancient Egypt the bow was considered a gift from the gods. In the ancient world, since the time of Hippocrates, onions were valued not only as a vegetable, but also as a remedy. IN ancient Rome red onions were part of the mandatory diet of legionnaires, and the emperor Nero ate leeks with olive oil to strengthen his voice (he was a fan of singing). Today, more than 400 varieties of "cultured" onions are known.

Healthy onions in the beds should look something like this

Why onions turn yellow in the garden: five reasons and methods of struggle

Before trying on the light clothes of onion gurus, we must immediately make a reservation - the onion in the garden turns yellow not only due to diseases and other negative influences, which will be discussed below. In August-September, onion stalks begin to wilt, for a completely natural reason - the harvest is ripe and ready to be harvested. In this case, you have nothing to worry about - you did everything right. The question is "What to do?" if the onion feather turns yellow at a time when, according to all the laws of the genre, it should still grow and grow... Then the source of "onion grief" should be sought in five possible directions:

  • insect pests;
  • illness;
  • soil condition;
  • improper care of plants;
  • adverse weather conditions.

Now let's take a closer look at these misfortunes and get acquainted with ways to eliminate them.

Reason one: pests

Significant damage to onion plantings can be caused by:

Onion fly (Delia antiqua)

These malicious insects, or rather their larvae, are equally dangerous as a traditional onionsand more "noble" varieties - chives, shallots, leeks, etc. During the flowering of dandelion and lilacs (approximately in the second half of May), the female onion fly lays eggs in the soil next to the plant or under the first dry scales and between green onion leaves. After 5-8 days, the larvae are drilled into the bulb (mainly from the bottom side) and begin to feed intensively. The onion in the garden turns yellow, and then it dies altogether. How to save onions from onion flies? To permanently ruin this pest's appetite, we recommend using the following methods.

In this photo, the onion fly is a malicious pest of onions.

  • Plant the onions in the soil as early as possible. Then he will have time to gain strength before the flies appear.
  • Sow onions along with carrots. The fly cannot stand the smell of carrots.
  • Use deterrents during the summer and during the laying of eggs, for example, mix 200 g of wood ash with 1 tsp. tobacco dust and 1 tsp. ground pepper, dust 1 sq.m. with this mixture. planting onions. After the procedure, loosen the soil.
  • Against larvae in the soil for 15 sq.m. you can add 30 g of granules of the drug "Bazudin" mixed with 0.5 liters of sand.
  • Do not plant the onions in the same spot every year. The onion bed can be used every four years.
  • At the beginning of summer, flies (if Bazudin was not introduced into the soil) onion plantings can be treated with Confidor, Leptocid, Mospilan, Nurell-D.
  • If the larvae have already penetrated into the bulb (feather wilting is observed, the tips of the leaves turn yellow), then spraying with Creocid PRO will help to save the planting.

The release of onion fly larvae from eggs

There is another popular method of dealing with onion fly - treatment with saline solution (200 grams of salt per 10-liter bucket of water). The effect is enhanced by adding a small amount of ammonia. The first watering is carried out when the length of the feather reaches 8 cm. In this case, you should try not to get on the leaves. During the season, 2-3 such procedures may be required, before the summer of a new generation of flies. This method has been proven over the years, but it leads to soil salinity, and an excess of chlorine and sodium inhibits the plants. Therefore, it must be used very carefully.

The development of the larvae lasts about 3 weeks, then they go into the soil for pupation. After a certain time, a new generation appears, and everything starts all over again. The second generation hurts in mid to late July. In the southern regions, the onion fly can give a third generation. Pupae overwinter at a depth of 4 cm to 10 cm.

Onion lurker (Ceuthorrhynchus jakovlevi)

This beetle feeds on onion leaves. Its larvae (yellowish, with a brown head, legless, about 0.7 cm) eat longitudinal passages in the pulp of the leaves, which are visible through the skin. Of course, onion plantings turn yellow in the beds. To get rid of the lurker, you need to:

The onion beetle lurking is found throughout Russia.

  • thorough cleaning of the beds after harvest. Uncleaned onion remains are an ideal place for the beetle to winter;
  • deep digging of the soil before the onset of cold weather. The beetle does not tolerate frost;
  • if the pest is not numerous, then it can be collected. By the way, beetles are very shy; at the slightest touch, they fall to the ground;
  • loosening row spacings with the addition of deterrents (wood ash, ground red and black pepper, mustard powder)
  • in case of mass settlement during the growing season, onions can be sprayed with “Karbofos” at the rate of 60 g (1 pack) per 10 liters of water. 1 liter of the resulting solution is treated with 10 sq.m. landings. After processing, the feather should not be eaten for some time.

Lurker beetle larva at the crime scene

Stem (onion) nematode (Ditylenchus dipsaci Kuhn)

A seemingly innocent, barely noticeable threadlike "worm". Adults and larvae feed on plant sap, as a result of which onion feathers turn yellow and dry out. The bottom collapses, rudiments begin to germinate through the cracks, it seems that the bulb is turning outward. The main danger of these microscopic (1-1.5 mm) pests is that they occupy the soil for decades. It is very difficult to determine the presence of nematodes in non-vial ridges. However, over the centuries-old history of fighting this pest, very effective fighting techniques were invented and tested:

Stem nematode (visible only under a microscope)

  • Do not plant onions in one place, return to the previous bed no earlier than 4 years later.
  • Plant only healthy planting material.
  • Process the onions before planting with hot water (45 degrees) for 6 minutes or with a salt solution (for 3 liters of water 3 tablespoons of salt) for 20 minutes.
  • Sow calendula or tagetis (marigolds) between the rows of onions. You can pour the marigold tincture on the onion.

Onion (tobacco) thrips (Thrips tabaci Lind)

Yellowish or brownish insect, body length no more than 1 mm. The larvae are wingless, gray-white or greenish-yellow. Thrips damage not only onions, but also garlic, cucumbers, flower crops. They feed on plant sap, sucking it out. Leaves wither, turn yellow, dry up. They overwinter in the upper soil layer, on the remains of vegetation, under onion scales. Females lay small brownish eggs singly in leaf tissue. The larvae hatch after 5 days.

Onion (tobacco) thrips

  • Crop rotation;
  • Pre-planting 10-minute disinfection of seedlings with hot water (45 ° C) with further immersion in cold water;
  • Spraying plantings with a solution of "Confidor" (1 ml per 10 liters of water) or "Iskra" (1 tablet per 10 liters of water). For 100 sq.m. use 10 liters of insecticidal solution.

Onion moth (Acrolepiopsis assectella)

Causes great harm to onion plantings in dry warm weather. The leaves begin to turn yellow and dry out from the tops, longitudinal asymmetric spots called mines appear on them.

Onion moth

Caterpillars of the first generation are harmed in late May - June. Small butterflies (no more than 0.8 cm, with a wingspan of up to 1.4 cm). Their summer takes place in July, exclusively at night. Females lay 0.5 mm yellowish eggs singly on the soil near plants or at the base of leaves. The appeared caterpillars (yellowish-green in color with brownish warts, about 1 cm long) penetrate the leaves and feed there. In October, butterflies, wintering in shelters, hatch from pupae. In the spring they begin years.

Onion moth caterpillar

  • Crop rotation;
  • Cleaning of plant residues;
  • Digging the soil before frost;
  • Spraying the onion moth during the summer with Iskra solution (1 tablet per 10 liters of water). 1 liter of insecticidal solution is enough for 10 sq.m. planting onions.

Marginal notes

Most effective method the fight against harmful insects is a "war on all fronts." The fact is that the onion fly, the nematode, and the secretive beetle can safely eat, so to speak, at the same table. Therefore, we recommend using the above measures in combination. For example, combine non-chemical methods of dealing with a nematode with measures directed against onion flies (ash mulching, pollination with tobacco dust, etc.).

Reason two: plant diseases

This name hides several fungal diseases of onions with similar outward signs - dotted yellowing of onion feathers with the formation of convex pads in May-June, followed by their blackening and complete loss of leaves.

Control measures:

  • crop rotation;
  • warming up the planting material before storing it;
  • warming up onion sets before planting for 12 hours at a temperature of 30-40 degrees;
  • for preventive purposes, planting onions during the period of mass growth can be sprayed with a solution of copper oxychloride (1 tablespoon of the drug per 10 liters of water with the addition of 1 tablespoon of liquid soap). The second spraying is carried out a week after the first solution of the drug "Hom", prepared according to the instructions.

Bacterial onion rot

It is found when the bulbs are cut. A dark layer of softened tissue is well distinguished between healthy scales. These bulbs rot during storage. Insects (thrips, onion flies, ticks, etc.) carry the infection. When diseased bulbs are planted, the plants look depressed, the leaves turn yellow, the peduncles dry out.

Manifestations of bacteriosis in the onion garden

  • Pre-planting culling of contaminated material. The neck of the bulbs is cut off by 0.5-1 cm so that all the scales are visible.
  • Before planting onion sets or turnip onions, the soil is treated with the preparation "Khom" (40 g per 10 l of water). consumption of 500 ml of solution per 1 sq.m.

Almost all varieties and types of onions are susceptible to this fungal disease. Mushrooms from the genus Fusarium live in the soil and infect the bulb during the growing season at temperatures from + 13 ° to + 30 ° Celsius. In diseased plants, the feather turns yellow and dies very quickly.

This is how an onion looks unappetizing if it has rotted its bottom

Agrotechnical measures to combat bottom rot:

  • Right choice places for onion beds. The site should not be in the lowland, in order to avoid flooding during floods and rainstorms.
  • Compliance with crop rotation. The best precursors for planting onions are cereal crops. If symptoms of the disease are observed on the ridges, the next planting of onions in this place should be done no earlier than 5 years later.
  • Planting material (seeds or seedlings) must be healthy and decontaminated. Planting (sowing) onions must be carried out in the optimal agrotechnical terms.
  • Use for cultivation only of resistant varieties and hybrids of onions.
  • The harvested crop must be stored in the correct temperature and humidity conditions.

Marginal notes

If you have already started your crusade against onion pests and carried out a set of measures to combat onion fly - we hasten to please you, these measures are an excellent prevention against bottom rot. Your onion now has double protection, which means your chances of a healthy, full crop are doubled.

Reason three: lack of nitrogen in the soil

Your onions will definitely turn yellow if the soil that feeds them is low in nitrogen. In fact, nitrogen deficiency in the soil is the most common and most insidious cause of yellow onion feathers. There is only one method of struggle here - feeding the onion beds with nitrogen-containing fertilizers. Organic or organo-mineral fertilizers are perfect for this.

Not only onions turn yellow from a lack of nitrogen in the soil

If you prefer organic matter in the choice of fertilizers, then in the preparation of the beds you can only use rotted manure, and make a fermented infusion for feeding. From the introduction of fresh manure into the soil, there is a high probability of the spread of fungal diseases.

Reason four: mistakes in onion care

The most common mistake due to which onions can turn yellow in the beds is the wrong watering regime. Of course, water care for each of the many varieties of onions has its own subtleties. Therefore, we will only touch general recommendations - equally suitable for the entire onion family.

Onion plantation in Valencia. With proper watering, the yield is 8000 (!) Centners per hectare

  • During the period of rooting and the beginning of growth, onions should be watered at least once every three days. Moreover, watering should be abundant. If the soil on the mulched ridges can be watered less often, the mulch retains moisture remarkably.
  • Watering the onion is desirable at the root.
  • The water temperature for irrigation should vary between +18 and +25 degrees Celsius.
  • The optimal watering time is before noon.
  • If the water for irrigation is hard, it should be artificially softened with special additives.

Marginal notes

It is convenient to combine watering onions with dressing. For this, fertilizers are dissolved in water and thus a nutrient solution is obtained. The composition of the solution: for 10 liters of water we take 50-70 grams of ammonium nitrate and 20 grams of superphosphate and the same amount of potassium salt. The first feeding of onions should be carried out when the feather has grown 3 centimeters from the ground level. The second feeding is done about a week after the first. For 1 m² of onion beds, 6 liters of solution are needed. When organizing onion watering, you should remember the golden rule of the "bowie": 4-5 days before harvesting, watering must be stopped, otherwise the bulbs will not taste good. The last watering of "green" onions is carried out 2 days before harvest.

Drip irrigation is one of the most successful methods of organizing irrigation

Reason five: unfavorable weather conditions

All the skills and tricks of gardeners can be nullified by the whims of Mother Nature. In very dry summers, as well as in excessively whiny weather, the onions will turn yellow in the beds, even without the participation of the above factors. There is only one way out of this situation - to act like Michurin. That is, "do not wait for favors from Nature." Natural disasters will bypass your onion beds if they are protected by a reliable greenhouse.

Green onions in a greenhouse are not afraid of either heat or rain

That, in fact, is all for today. We sincerely hope that our recommendations will help you get bountiful harvests. Go for it!

Healthy green onions, properly grown, are the perfect decoration for your table.

It happens that onion feathers in the garden begin to turn yellow. They can become covered with yellow small spots, only the tips can dry out, or the whole garden can turn yellow at one moment. And it becomes a shame, because this scourge could have been avoided if preventive measures were taken and agricultural practices followed.

Usually, the feathers of the plant turn yellow as a result of onion disease or pests. Let's consider the forehead option in more detail.

Diseases causing yellowing

The foliage can turn yellow due to fungal diseases: rust, rot of the bottom, bacterial rot.

When rusty, feathers are covered with many yellow dots. After a while, they turn yellow, turn black and die off.

Bottom rot and bacterial rot primarily damage the bulbs, and then the disease is manifested by yellowing of the feather.

Fungal diseases can only be cured at a very early stage. For this, the beds are treated with a weak solution of copper oxychloride.

If the disease progresses, then the onion must be dug up and destroyed, and not planting in this place for 5 years.

Onions turn yellow during an invasion of pests

Onions have many insect enemies. These are nematodes, onions, lurkers, onions and thrips.

Onion flies and moths are laid on leaves or on the ground, next to the planted egg bulb. This happens from the second decade of May to the first decade of June. A week later, small caterpillars appear from the eggs - larvae that make their way to the bulbs, settle in them and feed on their pulp and juice. Because of this, they stop coming to the green feather nutrients, they turn yellow and dry out.

Nematodes live in the ground for many years. They damage the bulb, feed on the pulp, which begins to rot. Nematodes can also settle in the stem, which turns yellow with the leaves and dries up.

The lurker loves the onion feather. He gnaws through passages in it, which, upon close examination, can be seen - they are transparent.

The fact that thrips attacked the bow can be understood if many small black dots are seen on the greenery. The leaf begins to turn yellow from above, gradually the yellowness goes down.

Folk remedies to combat yellowing - how to water from pests

The fight against onion flies and moths is to scare them away from the beds so that they do not lay eggs on them.

Rows of onions can be alternated with rows of carrots, marigolds and calendula. Flies and moths cannot stand the smell of these plants.

In addition, at the time of the fly out, and it usually coincides with the flowering of cherries, lilacs and dandelions, you can sprinkle a green feather with a mixture of wood ash, tobacco and ground pepper.

If there is a chance that the flies have already laid eggs, then you can fight the larvae with a salt solution. Add 100-150 grams of salt to one large bucket of water. Only the ground is watered with such a solution, trying to prevent the liquid from getting on the green shoots. You should know that salt is not washed out of the soil for a long time, so this should not be abused.

If folk remedies do not help, in order to save the plantations, you will have to use karbofos. 50 grams are diluted in 1 liter of water and sprayed. Onion feathers cannot be eaten for 30 days from the date of processing.

How to feed onions so that they do not turn yellow

Onions may turn yellow due to a lack of nitrogen in the soil. To prevent this from happening, you need to fill the garden bed with well-rotted manure before planting. If the manure is fresh, then you need to make a solution: add 5 buckets of water to 0.5 buckets of manure. This solution should ferment within 5-10 days. From him will come bad smell, therefore, it is better to put a container with such fertilizer in the far corner of the garden.

You can fertilize with mineral fertilizers. In one bucket of water, 50 grams of ammonium nitrate, 20 grams of superphosphate and 20 grams of potassium salt are diluted. This solution is enough to fertilize 2 square meters of plantings. They are fed twice: immediately after germination, and again a week later.

What to do if onion tips turn yellow

Onion tips can turn yellow with insufficient watering. The onion is a moisture-loving plant, so in dry weather it should be watered 2 times a week.

Do not use cold water from a well or well. It must be dialed in advance so that it warms up under the sun.

Before harvesting, watering is stopped a week before so that the land can dry out completely.

Prevention

When plantings are exposed to diseases or pests, folk remedies do not always help. If you carry out prevention, then many problems can be avoided:

  • test the onion sets carefully before planting. At the slightest suspicion of onion disease, discard;
  • larvae of pests can be expelled from the seedlings if the onions are held in salt water for half an hour. The solution is prepared as follows: 3 tablespoons of salt are diluted in 3 liters of water;
  • etching in a bright pink solution of potassium permanganate for 1-2 hours helps against diseases;
  • you can hold it for 5 minutes in hot water (50 ° C);
  • onions are not grown in one place for 4 years. It is desirable that cereals were the predecessors of onions;
  • the area allotted for the beds is cleaned of all plant debris in the fall and dug onto a shovel bayonet. The site is not leveled, but left for the winter with clods of earth. This will freeze out more insects - pests.

Video

Onions are probably the most popular of the cultures, because no one can do without it. garden plot... And this is understandable, because in addition to its taste, onions have a huge number of useful properties.
But even with such a seemingly simple culture, problems often arise. One of the most common situations is when green onions turn yellow. If you do not pay attention to this in time and do not start a struggle, then the harvest can be lost. This problem is especially relevant for gardeners who grow onions for sale.

Causes of yellowing green onions
To deal with the yellowing problem of an onion feather, you need to find out why it is happening. And there are many reasons.
Reason one: natural phenomenon. In August, the onions are completely ready to be harvested, so the green feathers begin to fade, signaling that the bulbs themselves are ripe and it is time to remove them from the garden. This is the only reason not to worry about.
Reason two: pests. There are several of them. Absolutely for all types of onions: both for the common onion and for its more noble counterparts (leek, chives, shallots ...) the larvae of the onion fly cause the greatest harm. At the end of May, females lay eggs either in the ground near the plant, or between the green feathers. After a week, the hatched larvae make their way into the bulb. Feeding on its pulp, they lead to the fact that at first the feathers turn yellow, and then the plant dies altogether.


There are a few tricks you can use to prevent yellowing.
1. If you plant the bow as early as possible, then even before the flies appear, it will gain the necessary strength.
2. There should be no permanent place for planting a bow.
3. Since the onion fly cannot stand the smell of carrots, you can make beds with these crops next to each other or intersperse them.
4. From mid-May, you need to start using deterrents. For example, dust each square meter of planting with the following mixture: mix a teaspoon of ground pepper and tobacco dust with 200 grams of ash. Then the soil must be loosened.

5. When flies appear, onions can be treated with one of the following preparations: Confidor, Leptocid, Mospilan, Nurell-D.

If preventive measures were not taken and the larvae have already damaged the bulb, as a result of which the plantings began to disappear, you need to start the fight. To get rid of this pest, you need to take 30 g of "Baduzin", mix with 500 g of sand and add this mixture to the soil (the calculation is for 15 square meters).
You can also use the drug Creocid PRO, which needs to be sprayed on the affected plants.
But you can solve the problem with folk remedies: dilute 200 g of salt in a bucket of water and pour the onion with this solution. You should not do this if the feather has not yet grown to 8 cm and should not be allowed to fall on the green part of the plant. It is also not necessary to abuse this method, as this can cause soil salinity, and due to excess sodium and chlorine, plants will grow poorly and disappear.
Onion leaves are eaten by the beetle lurking beetle and its faces, which eat longitudinal passages in feathers. Therefore, green onions begin to turn yellow.


To prevent the appearance of this pest, it is necessary to completely clean the beds after harvesting, because the beetle hibernates in the remains of onions; dig deep into the soil before frosts; loosen the soil between the beds, adding deterrent agents to it (mustard powder, ground pepper or wood ash are suitable for this).
To fight the bug, Karbofos is suitable. One package of the drug, diluted in a bucket of water, is enough to process 10 square meters of planting.
Another lover of onion is the onion nematode. This small worm, similar to a thread, feeds on the sap of the plant, which is why the green onion begins to turn yellow and dry, and the bulb itself "turns" outward, as it were. This is due to the fact that the rudiments begin to grow through the cracks formed. If you do not fight these pests, then the land will be contaminated for decades.

As a preventive measure, you can use the following tips:
1. Onions can be planted in the same place after at least four years.
2. Before sowing the onion, the set should be immersed in water at a temperature of 45 degrees for 5 minutes or in a saline solution for 25 minutes (a tablespoon per liter of water).
3. Plant marigolds or calendula between the rows of onions. And you can water plants directly with marigold tincture.

Onion (tobacco) thrips sucks the juice out of the plant, so the leaves turn yellow and dry out. As a preventive measure, the seedlings should be dipped in water at a temperature of 45 degrees for 10 minutes and then immersed in cold water. The planting material can be sprayed with Confidor (1 ml of solution per bucket of water) or Iskra (one tablet per bucket of water). This is enough to process one hundred square meters of the site.

It is worth noting that these pests can get along with each other and infect the plant at the same time, so it is better to carry out comprehensive prevention.

Reason three: disease. For example, rust, which causes bulging yellow spots. The leaves turn black over time and begin to fall off. To prevent the development of this disease, the sets must be "warmed up" at 40 degrees for 12 hours; spray adult plant a solution of copper oxychloride (add a tablespoon of the preparation and liquid soap to a bucket of water), and a week later with a solution of "Homa".

The next disease is bacterial rot that affects the bulbs. Brown streaks appear between the scales, which is why the feathers turn yellow. For prophylaxis, the land is treated with "Hom" before planting (a bucket of water with 40 g of the preparation is enough for 20 square meters).

Almost all types of onions are susceptible to bottom rot. The cause of the disease is Fusarium fungi that attack the bulb during the growing season. To avoid infection, it is necessary to plant onions on small hills in order to avoid stagnant water, to take preventive measures (everything is suitable as for the prevention of the appearance of an onion fly).

The fourth reason:lack of nitrogen. This is the most common reason green onions turn yellow. What to do? It is necessary to regularly apply nitrogen-containing fertilizers to the soil.

Reason five: improper care, in particular - not correct watering... The ideal irrigation method is drip irrigation. Each type of onion has its own watering requirements, but there are universal rules: when the onion begins to root and grows, it is necessary to water abundantly, in the morning and at least 2 times a week (except for mulched soils). The water should not be cold (18-25 degrees) and soft (hard water can be softened with special means).

Reason six:weather. Drought, as well as excessive humidity, negatively affects green onions, so building a greenhouse is ideal.

Storage rules for green onions

Growing green onions is only half the battle. After all, it must also be preserved, especially if it is a source of income.


First rule: go over the feathers, removing all the spoiled ones.
Second rule: do not wash the feathers before storing or dry them thoroughly with a paper towel after washing.
Third rule: put dry feathers in a bag, tie it and make several holes for ventilation. If the onion has been torn out by the roots, then they need to be wrapped in a cloth dampened with water and dry paper.
If you follow these rules, the cut onion feathers will remain juicy green for about 3 weeks.

Bow - this vegetable crop grows literally in every garden, and almost every gardener sooner or later faces the problem of yellowing of the feathers of this plant. There are a lot of reasons for this phenomenon, but only one can be perceived by gardeners quite calmly - this is when the feathers turn yellow and lie down when the bulb ripens. All other reasons for the yellowing of onion arrows are unacceptable and they must be known and be able to eliminate, otherwise you can be left without a crop. But before we tackle the causes and start learning how to eliminate them, let's talk about how to protect your bow as reliably as possible from yellowing of its feathers.



Simple rules of prevention against the yellowness of onion feathers

So, in order for the onion feathers to have a healthy color until the very harvest, it is necessary to process the site correctly, water it on time, use modern means of combating diseases and pests and take into account other rules for its cultivation.

Rule one - compliance with crop rotation, remember that it is not recommended to plant onions in the same place more often than once every four years, otherwise pests and diseases accumulate on the site, and the onions from the soil consume enough nutrients.

Rule two - correct feeding... It is necessary to apply fertilizers correctly and in the optimal amount, not forgetting that both a lack and an excess of fertilizers do not bode well.

Rule three - correct watering... Onions like watering in moderation, but one might say constant. Strong drying out of the soil and significant waterlogging of the soil should not be allowed.

Rule four - do not run the site... If you notice that the feathers of the onion have begun to turn yellow, then it is better to remove and burn them. In this way, the spread of an infection or pest can be stopped.

Rule five - deep digging... It is advisable to dig the soil under the onion on a full bayonet of a shovel with a rotation of the layer in order to minimize the number of harmful microorganisms in the soil.

These are the most important measures, one might say, to prevent yellowing of onion feathers, but it also happens that they do not help, and the onion still turns yellow. What are the reasons and what to do about it?

There are quite a few reasons for the yellowing of onions, as we have already mentioned, it can be a manifestation of the vital activity of a pest or a disease, improper agricultural technology, the influence of the weather, or a lack of nitrogen in the soil.

Pests that cause yellowing of onions

There are quite a few pests, the vital activity of which leads to yellowing of the onion: these are onion moth, tobacco thrips, onion lurker, stem nematode and, of course, onion fly.

Onion moth

Usually the onion moth is most active when it is hot and rarely rains, the soil is dry. At this time, the onion moth butterfly appears, little distinguishable from the home moth familiar to all of us. Its larvae, which hatch from eggs laid by a butterfly, are harmful. The presence of larvae leads to the fact that at first the tips of the onion feathers begin to dry out, and then the entire feather dries up completely.

To know how to fight onion moth, you need to know its biology. For example, the onion moth makes an ovipositor near the bulbs in the soil. Caterpillars hatched from eggs have a light yellow body and a length of about a centimeter. Having hatched, they move to the feathers, climb into them and begin to gnaw out the fabric from the inside, which leads to yellowing and wilting of feathers.

Before using insecticides, such as Metaphos, you should try to fight the onion moth with folk remedies, for which you can treat the feathers and soil around with oven ash, sprinkling it evenly, as well as tobacco, you can directly from cigarettes, or spray the soil and plants infusion of garlic (a couple of cloves per liter of water).



Tobacco thrips

Onion thrips, or tobacco thrips - it also leads to yellowing of onion feathers. Thrips are smaller in size than aphids, he, like her, feeds on cell sap, which leads to yellowing and drying of onion leaf plates. Thrips overwinters in the soil and bulbs, those that were left for planting next year, therefore, planting a set even on an ideal site in all respects and observing all agricultural techniques, onions can still suffer from this pest.

In order to prevent thrips from getting to your site with the seed, you need to lower the seed for a quarter of an hour before planting in water with a temperature of 45-47 degrees above zero, and then in cold water for 10 minutes.

If the pest has appeared clearly, then folk remedies are unlikely to help, here you need to apply insecticides. To combat thrips, insecticides must be used, strictly following instructions, such as Iskar or Confidor.



Onion lurker

Its vital activity is another reason why onion feathers can turn yellow. The larvae of the lurking proboscis literally eat the feathers of the onion, and at first they change color to a lighter color, then turn yellow, wither and die. If you do not fight the pest, then it can destroy most of the onion plantation.

The most annoying thing is that this beetle moves quickly, and even if you take into account crop rotation, fertilizing and watering, take good care of the soil, it can still appear on your site, flying from a neighboring one.

In order to minimize the risk of a beetle appearing on the site, it is necessary to dig up the soil, remove and burn plant residues, and observe crop rotation. Sprinkle the soil around the beds with wood ash or mustard or pepper powder, this can scare away the insect.

When a beetle appears in small numbers, these individuals can be collected by hand. If there is a lot of pest, then it is necessary to apply insecticides, strictly following the instructions on the package. Previously, the drug Karbofos helped effectively, but then it was banned and you need to look for other approved analogues.

Stem nematode

Another reason for the appearance of an atypical color of onion feathers is the stem nematode. In fact, this is a small worm that can penetrate into the bulb and cause cracks at the bottom of the head, it begins to rot, and the leaf blades turn yellow and die off. Usually the nematode is very small, no more than one and a half millimeters, but the harm from it can be enormous. If a nematode has already entered your site, then no crop rotation, most likely, will help, it can live in the soil for up to ten years, and sometimes longer.

To exclude the ingress of a nematode through onion sets on your site, before planting, you need to lower it for a quarter of an hour in water heated to 45 degrees above zero, and then in salt water for half an hour.

Gardeners say that when the soil is infected with a nematode, an infusion of marigolds can help get rid of it - 2-3 kg of the vegetative mass of marigolds per bucket of water - this is the norm for 2-3 square meters of soil.

There are also insecticides to combat the nematode, these are Fitoverm and the new drug Nematofagin BT.



Onion fly

Almost the most common pest of onions, the larvae of which happily eat any of its varieties. Usually, you can understand that it is the onion fly that is to blame for the yellowing of the feathers by the way the leaves begin to deteriorate: at first they turn yellow, then they begin to wither.

In order not to let the onion fly into the area, the beds with onions must be alternated with beds of carrots. The scent of carrots can scare off onion flies, and the scent of onions can scare off carrots, so you get a double benefit.

If the number of individuals is small and the harm from them is not yet very significant, then the affected plants can be treated with a solution of salt and ammonia, but remember that salt is dangerous for the soil and it is better not to carry out such treatments more than once a season. To obtain a solution, dissolve 200 g of salt (no more!) And a tablespoon of ammonia in a bucket of water. After that, the solution can be used to treat the soil and affected plants, spending this amount on five square meters of the garden.

They have a much more favorable effect on the soil, but less effectively affect the pest, mixtures of ash and tobacco, as well as pepper and mustard in equal proportions. You need 25-30 grams of these substances per square meter.

If folk remedies do not help, which happens very often, insecticides must be used. Preparations - Aktara, Sochva and Tabazol will help to cope with the onion fly.



Onion diseases

In addition to pests, diseases can also make onion leaves yellow, for example, such as bacterial rot, bottom rot, rust and a number of other less common ones. Usually, diseases on onions are fungal or bacterial, they can appear on the site after being introduced with planting material or insects. Considering this, when sowing onion sets, it must be carefully sorted out, removing all those onions that have signs of infection. The rest of the onions should be placed in water with a temperature of +45 degrees for 10-15 minutes, then dipped in salt water (a tablespoon per 300 g of water) for 8-10 minutes.

Do not forget that diseases are more actively manifested in soil that has excess moisture and in shaded areas, so you need to water the onion often, but in moderation, and select a leveled and well-lit area for it.

In addition, diseases can be transmitted with pests, so even if there are few pests on the site, you still need to fight them.

If you do not want to use chemistry to fight diseases, then at least treat the affected plants with copper-containing preparations: HOM, Oxyhom, Bordeaux liquid and others, if this is inappropriate in your area, then remove the affected plants so as not to allow diseases to spread further.



Errors in the care of onion beds

Any plant can suffer from improper care and onions are no exception. The most common mistakes are planting onions in the same place for many years, improper feeding and watering.

Lack or excess of nitrogen in the soil

Onions are almost the only vegetable that is very picky about nitrogen in the soil. The feather of an onion can turn yellow both from a lack of nitrogen, and from its excess, so you need to be careful with the introduction of trace elements. If the feathers turn yellow, then dig out one onion, if you did not find signs of pest infestation and the bulb looks intact, then the feathers may turn yellow due to a lack of nitrogen. To replenish it, you need to spend foliar feeding: it is enough to dissolve 45-55 g of ammonium nitrate in a bucket of water and use the resulting solution for a couple of square meters of onion beds.

In general, onions can be fed only a couple of times per season, the first time as soon as shoots appear and the second time after 12-14 days. You can use a nitroammophoska for this by dissolving a tablespoon of fertilizer in a bucket of water, this amount is enough for a meter for three beds.

With an excess of nitrogen in the soil, traces of rotting will be clearly visible on the dug out bulb. In this case, superphosphate and potassium sulfate must be added to the soil. Both need a teaspoon per bucket of water, this is the norm for a couple of square meters of the garden. After a week, you can loosen the soil and add wood ash at 100-150 g per square meter.

Improper watering of onions

If the onion is underfilled or poured with water, then its feathers will begin to turn yellow. Water the onion every day, preferably in the evening, with settled water at room temperature. A bucket of water is enough for a square meter, but only if there is no rain and it is hot. If even a little rain has passed during the day, then watering can be skipped, if there is no rain, but it is cold (below +20 degrees), then the water rate can be halved.



Conclusion

So, as you understand, there are quite a few reasons why onion feathers begin to turn yellow. Before taking on chemistry, assess the condition of the onion, try to find pests, assess the condition of the soil, and so on, only then decide in favor of using chemistry. Sometimes the simple removal of several atypical plants from the site and the observance of simple care rules saves the situation. Don't forget about prevention, especially if you are sowing unfamiliar material.

Kira Stoletova

How to water the onion so that it does not turn yellow? The answer to this question must be sought in the conditions of planting and caring for the plant, in the root cause of the disease of green arrows.

  • No vegetable garden is complete without bulbs and green juicy onion arrows. Caring for a plant is simple, and even a novice gardener knows about what to water the culture with. Onions are rarely exposed to diseases and do not need constant watering, but sometimes even with an unpretentious culture, trouble happens.

    Onions turn yellow, what should I do?

    A popular and useful vegetable - an integral "inhabitant" of any vegetable garden. On the garden bed of a skilled hostess, several varieties grow at once, which do not have to be watered every day. Easy maintenance and consistent yields are two main reasons why onions are planted in large and small areas. A root vegetable and a succulent feather are valuable. Watering is carried out together with neighboring crops. You can feed the onion with the simplest homemade fertilizer. A good feeding will protect the crop from various pests and diseases. Fertilizer is being prepared from humus and peat (sometimes fertile soil is added). It is best to water the fertilized soil out of turn, so that the nutrients quickly penetrate the root crop. Proper care and homemade folk remedies will ensure a healthy harvest for every gardener.

    After planting in open ground, it is better to water the bulbs once a week, but up to five times a month. The culture does not need abundant watering, and an excessive amount of moisture can harm both the stems and root crops. If the bulbous stem did not turn yellow immediately, but gradually, problems arose in the root system. Environmental problems lead to rapid drying of arrows.

    Watering the onion so that its green growth does not turn yellow should be done according to a previously created scheme. The plants themselves are unpretentious and can withstand even low temperatures. The culture is planted in early spring in open ground or in a greenhouse in winter. Onions are a source of nutrients and vitamins, as well as a natural antioxidant. People say: "If the onion turned yellow immediately after planting, there is no need to wait for the harvest." Watering such bulbs is simply pointless.

    Folk remedies are still used to treat greenery from pests. In those cases when only the bulbous stem turned yellow, and the rest of the seasonal vegetables and fruits remained healthy, the cause was looked for in pests.

    You can make special trenches on the garden bed if there are heavy torrential rains, because rot is the second most common reason that the onion turned yellow sharply. Additional watering of such plants is not worth it. Reasons why the disease spreads to sevok, bulbs and feathers:

    • onion fly;
    • excessive watering;
    • small pests;
    • lack of nutrients and nitrogen;
    • decay of the root, which depletes the feather;
    • constant bad weather in summer.

    It is not enough to water the plants; they should be properly cared for. Watering that is not organized is more likely to harm the onion than help. Succulent feathers and bulbs will grow on the garden bed only when the gardener has shown skill and perseverance in caring for all crops.

    Onion fly

    If the onion shoot has begun to wilt slowly, you can check the green feathers for onion fly larvae. In the garden, where a green and tasty crop is densely planted, breeding pests are quite common. The yellowing effect appears due to the large accumulation of larvae. Timely prevention helps to prevent the reproduction of pests that lead to the death of the plant.

    The leaves are an ideal environment for fly larvae, and the nutritious stems keep the eggs alive while they are growing. You can plant any kind of bulbs next to carrots, then no flies will be a problem. The smell of carrot tops in the garden drives away all onion pests.

    The actions to save from the eggs that cover all the leaves of the onion are as follows:

    • do not plant the culture twice in one place;
    • do not isolate the garden from other plants;
    • a solution of hydrochloric acid (metronidazole or spraying with water with ammonia) helps against yellowing;
    • from yellowing, you can wipe the leaves with an ordinary concentrated saline solution, if other substances are not at hand.

    Other types of pests include onion nematodes, flies, and lurkers. First of all, leaves and stems suffer from insects. A green onion becomes infected from just one larva or a healthy individual. Flies are brought from the environment or remain overwintering at the site of the former onion planting. From such pests, a yellow tint appears on the central part of the feather, and not on the tip. Sevok is not infected with fly larvae at all.

    The green arrow suffers from yellowing in the first weeks after planting. At this time, sleeping insects appear. Pests begin to multiply actively from the first days of awakening. The water and salt makes the plants unsuitable for the onion fly. It will be possible to obtain the desired solution if the proportion is observed: two parts of water and one salt.

    Lurker - a pest of greenery

    The pest that causes yellowing, the Lurker, appears on green arrows in early summer. Adults or larvae harm root crops and feathers. Insects eat bulbs and arrows piece by piece. Over time, damaged plants begin to fade, acquiring a characteristic yellowish tint. A color that indicates a pest attack is an alarm for the gardener. The constant loosening of the soil will help the culture. It is especially important to fluff the soil after heavy rains. Fertilization of the land occurs once a month, using ash or peat. Dilute the fertilizer with mustard, salt and pepper. From yellowing of the leaves to complete destruction of the root crop, it takes no more than 2-3 weeks. Delay on the part of a person leads to the death of the entire crop.

    Folk remedies will be able to get rid of pests in a matter of days. So how to pour the onion so that it does not turn yellow if you do not want to use chemicals?

    Mustard and ammonia solution

    For processing plants, tinctures are used from tobacco, mustard and garlic. A small amount of ammonia is added to the prepared mixture. Such solutions are infused for 4 days. If the arrows have already turned yellow and dry (a process that could not be prevented) each day of delay can cost the gardener a harvest. The prepared mixture is brought to a boil and then cooled. This solution treats feathers from nematodes or other pests.

    Lack of nitrogenous substances

    The lack of nitrogenous substances in the soil (in an area with a lot of groundwater) leads to rapid drying of the stems. Different cultures suffer from the disease, all nearby greenery also dries out slowly and loses color. Pale white streaks appear on juicy leaves, the appearance of which becomes the first alarm signal for the gardener. In sprawling leaves, the edges shrink, the fruits change shape. The last stage of the disease from a lack of nitrogen is the appearance of spots on the leaves and stems, more like lichens. Such symptoms are caused by torrential rains, which wash away nutrients from the soil.

    Yellowing of onions is difficult to get rid of on your own. To do this, you need to fertilize the land with nitrogenous substances. Additionally, watering the culture is not worth it.

    You cannot overdo it in such a matter either. It will not be possible to remove the amount of nitrogen back from the soil. Once the onion arrow turns yellow, the soil around all affected plants is treated with a mixture prepared from:

    • greens (any succulent grass);
    • straw or any dried hay;
    • weed seeds;
    • waste from vegetables and fruits.

    All components are thoroughly mixed into a homogeneous mixture. All soil is fertilized with a margin of several meters. The mixture is diluted with water. Even rainwater collected during heavy rains is suitable for these purposes. You should not dilute the prepared mixtures with salt, it is better to add more waste from vegetables, fruits or cereals to them.

    Rot and torrential rains

    A worm that eats root vegetables appears during periods of heavy torrential rains. Watering is temporarily stopped, and the land is constantly loosened. The upper layers of the soil serve as drainage. It is much easier to get rid of excess moisture through loosened soil. After rainstorms, the soil around the onions is fertilized, restoring the amount of nitrogen in the soil. Otherwise, the bulbs will stop growing and feather growth will slow down significantly. Rotting of root crops occurs in a few days, and after that the crop cannot be saved. It is important for the gardener not to lose fertilizer over time, otherwise all the time spent will go down the drain.

    Plants rot from the rhizome, especially if watered too abundantly and too often. The stems turn yellow when the root vegetable is completely spoiled. Dry stems indicate deterioration of the future harvest. There is no point in saving such bulbs, so it is better to immediately dig up all the spoiled material.

    Unfavorable environmental conditions

    It is difficult to guess the weather, because dry summer days are replaced by heavy rains. Moisture levels can rise sharply depending on the region. Even an experienced gardener is unable to predict changes in the external environment.

    Protects the bulbs with fertilizers, timely irrigation and leaf processing. The stems of the culture are washed at the beginning and at the end of the season. Before planting seedlings in the spring, the soil is pre-fertilized and saturated with moisture, nutrients and minerals.

    Prevention in the garden

    Preventive measures can help anticipate and eliminate hazards before the entire crop is spoiled. Fertilizing the soil should be done before planting nigella or other varieties of onions. As it grows, the top layers of the soil are fertilized with humus, dry hay and nitrogenous substances.

    Washing out the nitrogenous layer occurs quite often, and it is in the interests of the gardener to worry about the problem with the soil in advance. The prepared fertilizers will help strengthen the roots and allow you to collect good harvest at the end of summer. Onion crops are useful and unpretentious in care, and planting them should not cause difficulties for humans. Any possible problems are solved without special financial costs.

    Premature yellowing of onions in the garden is a common problem. There are many reasons why onions turn yellow, ranging from improper care to serious diseases. So it is important to identify the source of the problem in time. This article explains why this can happen and how to water yellowing onions to help the crop.

    Why does the onion turn yellow in the garden

    When the onions are almost ready to be harvested, the feathers begin to turn yellow and fall to the ground - this is a completely normal, natural process. Garlic ripens similarly, so you can navigate by it. But if the onion begins to turn yellow ahead of time, then the point is something else. So, why does the onion turn yellow in the garden:

    First of all, it is important to find out the cause of the problem, and then solve it, because depending on why the onion turns yellow, the treatment may differ.

    You cannot use fresh manure or bird droppings to fertilize onions.

    What to do if the onion turns yellow

    Check out these articles as well

    Improper care or unfavorable weather immediately affects appearance onions and garlic. The matter may be in improper fertilization of plants, lack of watering, waterlogged soil, too heavy, dense soil that does not allow air to penetrate to the roots. So, how to water and feed the onion so that it stops turning yellow and starts developing normally again:

    • If the plant does not have enough watering, it is necessary to adjust this procedure. When seedlings appear, the culture is watered every 3 days. Water consumption 6 l / m². At the next stage of growth, watered once a week at a rate of 10 l / m². 2 weeks before harvesting, water is stopped at all. Watering is carried out in the evening, with warm, settled water.
    • Simple folk remedies help to revive onions. For example, if a plant is sprinkled with tobacco dust, ash or pepper at the rate of 500 g / m², it will start young feathers again in a couple of days.
    • Green grass, tea, taken in arbitrary quantities, add water and put in a warm place to ferment. After that, 1 liter of the concentrate is diluted in 10 liters of water and used for irrigation. This is a very nutritious onion feed.

    Fertilize onions on wet soil! Application of top dressing to dry soil can lead to further yellowing of feathers.

    The folk remedies described above help in case the culture has turned yellow from improper care or bad weather. If this is something else, they may not help.

    How to water and feed yellowed onions

    Onions and garlic have similar pests, so if one crop has a similar problem, the other is most likely to be affected by the pests as well. The problem with insects should be solved immediately. Otherwise, the situation will worsen and other cultures will also suffer.
    Onion insecticides are best used in spring or early summer, when the head has not yet formed. The fact is that they contain chemical components that can affect the harvest in one way or another. So, how to pour yellow onions? The best drugs: "Capture Oil", "Maxim", "Antiklesch", "Aktara", "Fufanon", "Sochva", "Onion Fly"

    Folk remedies for the destruction of pests

    • Tobacco, pepper, mustard or garlic are crushed and filled with water (you can mix them). The concentrate should be infused for 3-4 days. The richer the remedy, the more chances that it will work. If there is no time to prepare the infusion, you can pour the ingredients into water and bring to a boil, after the product has cooled under the lid, it is used to sprinkle or water the onions over the herbs.
    • 2 tablespoons of ammonia are dissolved in 10 liters of water. The resulting composition is sprayed with onion leaves.

    If the pest is ground-based, it is destroyed by spraying the crop, but if it is underground, then besides spraying, the onion is also watered at the root.

    Folk remedies against pests are effective if there are not many insects. Otherwise, use insecticides.

    Onion diseases

    Yellowing of onions can also indicate a specific disease. Diseases of onions first manifest themselves in yellowing, but then lead to deformation or even death of the head. Diseased onions will not yield a large harvest, and will not be stored for long. What to do if the onion is sick:


    Mulching the row spacings is a good prevention of a wide variety of onion diseases. You can use straw, peat, tree bark as mulch.

    Diseases of onions are easier to prevent than to cure. In order not to encounter them in the garden, it is necessary to disinfect the seed, treat the land with special fungicides and carry out high-quality care, including regular (not frequent) watering, feeding, loosening the soil and destroying pests.

    Prevention against yellowing of onions

    In order not to think about how to pour the yellowing onion, you just need to prevent a problem from arising.

    • The place for planting onions is chosen differently every year. Otherwise, there will certainly be problems with pests and diseases.
    • Before planting, onions must be treated with a disinfectant (a weak solution of potassium permanganate or salt liquid).
    • You need to plant the plant on time, otherwise development will be slowed down.
    • It is recommended to plant carrots next to onions as a preventive measure, as it repels many pests.
    • The soil is weeded regularly, weeds must be removed by the roots.
    • Onions are an unpretentious culture, but without timely feeding, they may not have enough nutrition, especially if the land is not fertile. So it is important to carry out at least rare feeding.

    With quality care, you will not need to think about how to pour the yellowing garlic. The plant will develop correctly, give a large harvest. So the main thing is to provide the culture with proper care and timely destroy pests, if they are on the site.

    Onions are considered one of the most unpretentious vegetables: they are easy to plant, easy to care for, and soil and climatic conditions practically do not affect the yield. However, it sometimes happens that the onion in the garden turns yellow. What to do in such a situation?

    In today's article, we will try to understand the causes of yellowing of onion feathers, as well as provide proven ways to fix this problem.

    The reasons why the onion turns yellow in the garden

    Trying to figure out why the onion turns yellow, many gardeners blame the weather for everything. In fact, the reasons may lie in not proper care behind the plant. If the soil in the garden is not too fertile, the culture will lack nutrients that will have to be added.

    Similarly, with watering - if the onion does not have enough moisture, its feathers first begin to turn yellow, and then dry up. Since these reasons are most common, we will consider methods of dealing with them in more detail.

    Lack of nitrogen in the soil

    One of the most common reasons why onions turn yellow in the garden lies in the lack of micro- and macroelements in the soil. As a rule, plants lack nitrogen, which is responsible for the growth of green mass in spring (Figure 1).

    Note: It is quite easy to notice the deficiency of this microelement: with a lack of nitrogen, feathers grow not in length, but in thickness.

    But it is much easier to notice problems with growing by the color of the feathers: they do not become bright green, but acquire a yellowish color uncharacteristic for the plant. There is only one measure to combat this problem - treatment of the plant with nitrogen preparations. Best to use organic fertilizers (urea or manure infusion).


    Figure 1. Discoloration of feathers may be due to nutritional deficiencies

    These fertilizers can be used in combination. To prepare high-quality top dressing, you need to mix a glass of rotted manure with a tablespoon of urea, and dissolve the resulting mixture in 10 liters of water. The finished product should be allowed to brew for several days, after which the beds should be watered.

    Lack of moisture

    The second common cause of onion feathers yellowing is a lack of moisture. As a rule, the leaves turn yellow and dry abruptly, making it much easier to determine the lack of water than the lack of fertilizers.

    It is very easy to check if your plants need moisture. It is enough to carefully examine the soil on the garden bed: if it is dry, not only from above, but also at a shallow depth, your plants need to be watered urgently (Figure 2).

    It is much easier to prevent the yellowing of onions from lack of watering than to deal with an existing problem. If we allow a strong drying out of the soil, it is possible that the plants will not only have to be watered abundantly, but also treated with special fertilizers.


    Figure 2. The vegetable begins to dry, wither and turn yellow with insufficient watering

    A clear watering schedule will help prevent additional problems. In the first half of summer, plants are watered twice a week. Then watering is reduced to once every 7 days. The average irrigation rate is 6-8 liters per square meter of area. However, in droughts, the liquid can be applied more often and in large quantities. It is important not to use cold water and pour it directly under the root. When the liquid is absorbed, it is advisable to loosen the bed so that not only moisture, but also air can flow to the roots.

    Damage by pests

    The bow also has enemies among insects. Sometimes it is they who lead to yellowing of feathers, and it is not always possible to notice the invasion of pests in time, since most of these insects live underground and damage the roots (Figure 3).

    Among the most common onion pests, the most common are:

    1. Stem nematode: leads not only to a change in the color of feathers, but also to their deformation. To check for pests, break off such a damaged feather. If small filamentous worms are visible inside white - your onion is damaged by a stem nematode.
    2. Onion moth: lays eggs in the soil or at the base of leaves. It is the caterpillars that hatched from the eggs that harm the onion the most. Outwardly, they are small and yellow, but they can be found both inside the feather and outside.
    3. Onion fly: damages crops in late April or early May. Characteristic feature the defeat is that not all of the feather begins to turn yellow, but only its tip, and when digging, you can find rotten parts of the bulb.

    Figure 3. The main pests of culture: 1 - stem nematode, 2 - onion moth, 3 - onion fly

    Unfortunately, there are few ways to combat onion pests. In the case of a nematode, only preventive measures help: processing of seedlings and soil before sowing. If the pest does appear, all affected specimens must be dug up and burned so that they do not damage the rest of the crop.

    In the case of the onion moth, the pre-sowing treatment of the planting material is not considered effective, since the pest hibernates in the soil at the butterfly stage. If insects do appear, the bed must be treated with insecticides. When an onion fly is found, processing the row spacing with a mixture of tobacco dust and sunflower ash, mixed in equal proportions, helps well. However, this is only a preventive measure, and the affected specimens will still have to be dug up and destroyed.

    In addition, experts advise planting onions next to carrots or alternating planting these vegetables. Both carrots and onions have a characteristic odor and are capable of repelling each other's pests.

    Exposure to adverse weather conditions

    It also happens that yellow onion feathers appear even in the absence of pests and proper crop care. In this case, the most unpredictable cause of crop spoilage comes into force - unfavorable weather conditions (Figure 4).


    Figure 4. To prevent the weather from spoiling the harvest, it is better to grow a vegetable in a greenhouse or greenhouse

    A change in the color of a vegetable can cause both severe drought and too rainy summer. Unfortunately, it makes no sense to process or fertilize plants in this case. Bad weather can destroy all your work. The only viable method is to grow the vegetable in a greenhouse or small greenhouse. In such constructions, temperature and humidity are always stable, so the feathers will remain green and juicy.

    If you still prefer to grow onions in open ground, carefully follow the watering schedule. In a drought, the beds will have to be watered more often, and after rains, it is imperative to loosen the row spacing so that a sufficient amount of air flows to the roots.

    Fungal or bacterial attack

    Not only insects, but also fungal and bacterial diseases can destroy the onion crop. If you notice a yellowed onion in your garden, be sure to check it for such diseases (Figure 5).

    Usually the culture is affected by such diseases:

    1. Bacterial rot: occurs only in combination with pests (onion fly or thrips). These insects carry bacteria. As a result of the defeat, the feathers begin to turn yellow, the flower stalks dry out, and the bulb itself begins to rot. There are few methods of dealing with the disease. Affected specimens will have to be dug up and burned to protect the remaining crop.
    2. Bottom rot: manifests itself in yellowing and gradual dying off of the tips of the onion. It is very easy to check for a disease. It is enough to dig up the onion and examine it carefully. If there is a lesion on its bottom, a white mycelium will be noticeable. If the pathology is neglected, the mycelium becomes pink, and the root crop itself becomes soft and watery.
    3. Rust: manifested by education yellow spotswhich usually appear in late May or early June. Over time, they transform into bulging pads. If the disease is not stopped, the feathers will turn black and fall off.

    Figure 5. The main diseases of green onions: 1 - bacterial rot, 2 - bottom rot, 3 - rust

    In most cases, fight with folk infusions or chemical means it is useless with diseases. Only possible variant - carry out preventive treatment of planting material, for example, by soaking in a solution of potassium permanganate or fungicide.

    Folk methods of dealing with yellowing onions

    If you notice that the feather of the onion in the garden turns yellow, you need to establish the cause of this process and start fighting it. But experienced gardeners recommend using preventive methods that will help prevent such a problem.

    There are certain planting rules and folk remedies for preventing feather yellowing:

    1. After the autumn harvest, the garden bed must be dug to the depth of the shovel bayonet. This will help destroy the larvae of pests that have settled in the soil for the winter.
    2. It is imperative to observe the crop rotation. Onions should grow in one place no more than once every 4 years. Best predecessor for onions, cereals are considered.
    3. Planting material must be carefully examined before disembarking. The bulbs must not show signs of rot or mechanical damage. It is advisable to warm up the planting material and dry it before planting, and if you previously had problems with the vegetable, it is better to process the planting material with potassium permanganate or ammoniathat will help disinfect it.
    4. The soil can also be disinfected by spilling it with a solution of copper sulfate. For high-quality processing, it is enough to dissolve a tablespoon of the product in a bucket of water.

    It should also be remembered that during the cultivation process, you must strictly follow the watering and feeding schedule. If, however, yellowed specimens were found in the garden, they must be removed and burned so that diseases or pests do not spread throughout the garden.

    The author of the video tells in detail what actions should be taken if the feather of an onion begins to turn yellow.

    The problem is - turns yellow family onionin the garden. How to avoid this, how to water, what folk remedies can help? Answers to these questions need to be found quickly to avoid damaging the plants near the yellow onion. Find out the reason why onions turn yellow, how to water and feedyou can in this article. It tells how to process onions in order to stop the death of the entire crop.

    Why turns yellow onion

    A lack of fertilizer, insect attack and plant disease can cause onions to wilt.

    During the onion sprouting period, usually at the beginning of summer, it should be watered 2 times a week. At the next stages of growth and development - about 4-5 waterings per month. Moreover, it is necessary to moisten the soil by directing a stream of water strictly under the root. Watering is best done before lunchtime, when the sun is not at its zenith. The water should be of moderate hardness, with a temperature of 18-25 degrees Celsius. Water consumption rate is about 8 liters per square meter. After watering, when the top layer of soil is covered with a crust, it must be loosened.

    Damage by pests

    Of all garden crops, onions are the most vulnerable to insect infestation. This causes yellowing of the leaves and a decrease in yield.

    The onion fly is active in the growth phase of the greenery of the plant - April-May. She uses the surface of the feathers and the soil of the onion beds to lay her eggs. Soon, after 8-10 days, small worms appear, feeding on the scales of the bulb. Damaged plants on garden bed stop their growth, their leaves wither, turn yellow and after a while dry up.

    The activity of the onion moth is manifested in dry weather. By its activity in late spring, the moth causes enormous damage to the crop. Its larvae get into onion feathers and begin to eat them. Wherein turn yellow tips luke and dry up, gradually the whole feather dries up.

    To prevent yellowing of the vegetable, it is necessary to spray the planting of this crop with insecticides Spark or Summer resident.

    Unfavorable weather conditions

    The feathers of a plant can turn sharply yellow due to inappropriate climatic conditions, for example, in very dry or, on the contrary, rainy weather. In this case, a greenhouse or greenhouse will save from loss of harvest, thanks to which the onion will grow in necessary conditions absolutely green, tasty and juicy.

    Fungal or bacterial attack

    Common diseases that lead to yellowing of the leaves of the crop are rust and rot of the bottom. On the feathers of a culture affected by rust, slightly protruding yellowish damage appears, leading to the drying of the feathers and their death. With rot of the bottom, the plant turns yellow entirely and subsequently fades.

    Watch the video! Super dressing for yellowing onion leaves and pests

    Folk remedies for diseases and pests

    If you want to harvest a rich harvest of onions, you must:

    1. do not disturb crop rotation;
    2. observe the period of sowing and planting bulbs in open ground;
    3. the use of healthy planting material for planting will prevent damage to the culture by pathogens.

    The soil should be prepared for planting: loosen, weed and process copper sulfate, diluted in the proportion: 1 tbsp. pellets on a bucket of water.

    Remedies for onion fly

    Preventing onion fly infestation will help correct fit onions, namely in the neighborhood of carrot beds. Many summer residents sprinkle onion beds with a mixture of ash and tobacco, taken in equal portions.

    If the larvae of flies are found, the plant is urgently watered with a solution of tobacco, grated laundry soap and ground red pepper.

    Solution preparation:

    • tobacco (200g);
    • pour 3 liters of hot water;
    • insist 3 days;
    • another 7 liters of water are added to the resulting infusion;
    • add 1 tablespoon of soap and pepper;
    • mix everything gently.

    Stalk nematode control

    Affected onions are watered with ammonium sulfate solution at the very beginning of summer:

    • 2 tbsp. l. ammonium sulfate;
    • 10 liters of water.

    A bucket of this solution is enough for about 2 square meters of soil.

    Before planting the onion in open ground, its seeds are dipped in a solution of sodium chloride for 15-20 minutes (5 tablespoons are poured into 5 liters of water).

    Processing and feeding onions by chemical methods

    When onions are grown for greens, it is forbidden to process them with various harmful chemical devices. In this case, biological fungicides are used that do not harm humans. Than feed onion in the open field?

    Trichodermin treatment

    Treatment with Trichodermin immediately before planting the onion will prevent the onion from turning yellow throughout the season. For a kilogram of sevka, take 30 grams of the drug, pour three liters of water. The set is placed in the resulting solution and soaked. After planting onions during the growing season, they are sprayed with biological products Fitosporin-M or Gamair (about 3-4 times).

    Application of Metronidazole

    The most common antibacterial drug Metronidazole is considered to have a stunning effect on yellowing of onion feathers. You can buy it without a prescription at any pharmacy. This drug kills harmful insects. To treat plants, 4 tablets of the drug are placed in a bucket of water and stirred until they are completely dissolved. The resulting solution is used to treat onion stalks at the rate of 4-6 liters per square meter.

    Conclusion

    In order for onion seeds to germinate well and enjoy fresh greens throughout the season, and in the fall you can harvest a healthy, high-quality and large harvest, you need to know the rules for watering, planting, processing the crop, as well as the reasons for the yellowing of the feather and methods of dealing with this problem.

    Watch the video! Are the feathers of the bow turning yellow ?! What to do

    It happens that onion feathers in the garden begin to turn yellow. They can become covered with yellow small spots, only the tips can dry out, or the whole garden can turn yellow at one moment. And it becomes a shame, because this scourge could have been avoided if preventive measures were taken and agricultural practices followed.

    Usually, the feathers of the plant turn yellow as a result of onion disease or pests. Let's consider the forehead option in more detail.

    Diseases causing yellowing

    The foliage can turn yellow due to fungal diseases: rust, rot of the bottom, bacterial rot.

    When rusty, feathers are covered with many yellow dots. After a while, they turn yellow, turn black and die off.

    Bottom rot and bacterial rot primarily damage the bulbs, and then the disease is manifested by yellowing of the feather.

    Fungal diseases can only be cured at a very early stage. For this, the beds are treated with a weak solution of copper oxychloride.

    If the disease progresses, then the onion must be dug up and destroyed, and not planting in this place for 5 years.

    Onions turn yellow during an invasion of pests

    Onions have many insect enemies. These are nematodes, onions, lurkers, onions and thrips.

    Onion flies and moths are laid on leaves or on the ground, next to the planted egg bulb. This happens from the second decade of May to the first decade of June. A week later, small caterpillars appear from the eggs - larvae that make their way to the bulbs, settle in them and feed on their pulp and juice. Because of this, nutrients cease to flow to the green feather, they turn yellow and dry out.

    Nematodes live in the ground for many years. They damage the bulb, feed on the pulp, which begins to rot. Nematodes can also settle in the stem, which turns yellow with the leaves and dries up.

    The lurker loves the onion feather. He gnaws through passages in it, which, upon close examination, can be seen - they are transparent.

    The fact that thrips attacked the bow can be understood if many small black dots are seen on the greenery. The leaf begins to turn yellow from above, gradually the yellowness goes down.

    Folk remedies to combat yellowing - how to water from pests

    The fight against onion flies and moths is to scare them away from the beds so that they do not lay eggs on them.

    Rows of onions can be alternated with rows of carrots, marigolds and calendula. Flies and moths cannot stand the smell of these plants.

    In addition, at the time of the fly out, and it usually coincides with the flowering of cherries, lilacs and dandelions, you can sprinkle a green feather with a mixture of wood ash, tobacco and ground pepper.

    If there is a chance that the flies have already laid eggs, then you can fight the larvae with a salt solution. Add 100-150 grams of salt to one large bucket of water. Only the ground is watered with such a solution, trying to prevent the liquid from getting on the green shoots. You should know that salt is not washed out of the soil for a long time, so this should not be abused.

    If folk remedies do not help, in order to save the plantations, you will have to use karbofos. 50 grams are diluted in 1 liter of water and sprayed. Onion feathers cannot be eaten for 30 days from the date of processing.

    How to feed onions so that they do not turn yellow

    Onions may turn yellow due to a lack of nitrogen in the soil. To prevent this from happening, you need to fill the garden bed with well-rotted manure before planting. If the manure is fresh, then a solution must be made: 5 buckets of water are added to 0.5 buckets of manure. This solution should ferment within 5-10 days. An unpleasant odor will emanate from it, so it is better to place a container with such fertilizer in the far corner of the garden.

    You can fertilize with mineral fertilizers. In one bucket of water, 50 grams of ammonium nitrate, 20 grams of superphosphate and 20 grams of potassium salt are diluted. This solution is enough to fertilize 2 square meters of plantings. They are fed twice: immediately after germination, and again a week later.

    What to do if onion tips turn yellow

    Onion tips can turn yellow with insufficient watering. The onion is a moisture-loving plant, so in dry weather it should be watered 2 times a week.

    Do not use cold water from a well or well. It must be dialed in advance so that it warms up under the sun.

    Before harvesting, watering is stopped a week before so that the land can dry out completely.

    Prevention

    When plantings are exposed to diseases or pests, folk remedies do not always help. If you carry out prevention, then many problems can be avoided:

    • test the onion sets carefully before planting. At the slightest suspicion of onion disease, discard;
    • larvae of pests can be expelled from the seedlings if the onions are held in salt water for half an hour. The solution is prepared as follows: 3 tablespoons of salt are diluted in 3 liters of water;
    • etching in a bright pink solution of potassium permanganate for 1-2 hours helps against diseases;
    • you can hold it for 5 minutes in hot water (50 ° C);
    • onions are not grown in one place for 4 years. It is desirable that cereals were the predecessors of onions;
    • the area allotted for the beds is cleaned of all plant debris in the fall and dug onto a shovel bayonet. The site is not leveled, but left for the winter with clods of earth. This will freeze out more insects - pests.

    Video


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