home · Tool · The onions in the garden are turning yellow, what to do? The onion feather turns yellow - what does it mean and how to avoid the problem. Pests that cause onions to turn yellow

The onions in the garden are turning yellow, what to do? The onion feather turns yellow - what does it mean and how to avoid the problem. Pests that cause onions to turn yellow

Onions can be found in almost any garden. This vegetable is an excellent addition to many dishes. Moreover, both green feathers and succulent bulbs of the plant are used. But, if the bulbs collected at the end of the season can be eaten all year round, then the opportunity to enjoy fresh greens is available only in the summer. Therefore, it can be very disappointing if the feathers suddenly begin to turn yellow. In this article we will try to figure out why this can happen and how to water the onion so that the feather does not turn yellow.

Onion fly

One of the reasons that can provoke yellowing of the feather may be the appearance of onion fly larvae on the plant. Prevention of the appearance of this pest will be effective. To do this, it is recommended to plant onions next to them, which will scare away uninvited guests. The advice may also be useful not to plant onions in the same place, but to periodically change their location in the garden. If you do find onion fly larvae on the plant, the onion turns yellow and dries out, and you are wondering what you can water and feed the vegetable with, then excellent option can become fertilizer from saline solution. In addition, specialized stores sell special drugs, which perfectly repel pests in general and onion flies in particular.

Onion sneaker

Another unpleasant insect that can cause onions to begin to turn yellow is the onion secretive insect. Moreover, both larvae and adults pose a danger to the plant. Pests eat away part of the feather, as a result of which the leaf begins to turn yellow and wither. Frequently loosening the soil around the bulbs and adding wood ash, ground pepper or dry mustard to the roots will help you in the fight against the onion secretive proboscis.

Nitrogen deficiency

If the onion begins to turn yellow, and you don’t know what to do or what to water the plant with to prevent the process, then perhaps the vegetable does not have enough nitrogen. This can happen either from a lack of moisture or after heavy heavy rain. In such a situation, fertilizing with saltpeter, urea or manure infusion will help.

Bottom Rot

This is another disease that can cause onion leaves to dry out. The disease itself affects the bottom of the bulb, and as a result it becomes covered with a white coating. The disease is transmitted through the soil, and if you are wondering what to water in this case to prevent it from turning yellow, then the answer will not be very optimistic. Fertilizers are unlikely to help here. Most likely, in the future you will have to switch to another variety that will be resistant to this disease. To be sure, the seeds can also be treated with a fungicide before planting.

Adverse weather conditions

This is another situation where the answer to the question of what to water the onions with so that they do not turn yellow will not be reassuring. Climatic conditions are beyond our control, and if there is a long drought or frequent heavy rains, then it is quite natural that the onions will dry out.

Failure to comply with watering rules

But improper watering is the reason that provokes the yellowing of onions, which completely depends on you. Wondering what to water or fertilize with family bow or onions of any other variety, so as not to turn yellow, check whether the plant has enough ordinary water. Sometimes this may be the problem - onion leaves begin to turn yellow and dry out due to improper watering. In this case, it is worth remembering that watering the vegetable crop should not be done very often, but the amount of liquid should be plentiful. However, there is no need to pour onions, because this can lead to the appearance of fungi and pests.

It is simply impossible to imagine cooking without onions. This useful ingredient is used in almost all dishes: first, second, baking, canning, even red onion marmalade is prepared.

Yellowing of onions due to pests

It would seem that there is nothing easier than growing onions - these are not capricious tomatoes or delicate overseas eggplants. So why do onions turn yellow in the garden, and what to do about it? Let's figure it out.

Onion fly


Dangerous for all types of onions (chives, shallots, leeks). In the month of May, the fly lays eggs, and a week later the voracious caterpillars begin to eat the bulbs. The plant first turns yellow and, if no action is taken, the onion will die.

As a preventive measure, it is advisable to plant onions as early as possible so that they have time to get stronger before the larvae invade. Choose carrots as neighbors for onions: flies don’t like their smell.

How to save onions from the onion fly if it has already appeared in the beds. In May, when the fly begins to lay eggs, powder the plants with the mixture: 200 g wood ash, 1 tsp tobacco dust and ground pepper. (per square meter). Suitable for combating larvae drug "Creotsid PRO", you need to spray the plants with the solution.

Another popular way to get rid of insects: 200 g of salt, 10 liters of water, a few ml of ammonia. Saline solution is watered during feather development (feathers are about 8 cm long). It is advisable not to get it on the feathers; pour it under the bulb.


Why is it dangerous? secretive proboscis: it eats leaves, and its larvae gnaw out entire trenches in the leaves. Bow loses marketable condition, turns yellow and dies.

When a beetle appears, while loosening and weeding the beds, powder the soil wood ash or pepper, dry mustard. If there are too many pests, treat the plantings with Karbofos (60 g per 10 liters of water).


This microscopic (1mm) insect lays a colony of eggs directly in the leaf tissue, sucking out all the juices from the plant along with its offspring.

To protect yourself from them, as a preventive measure you need observe crop rotation, clean the soil after harvesting and treat onions before planting (keep the seed in water up to + 45°C). When a pest appears, spray with Confidor (1 ml per 10 liters of water), Iskra (1 tablet per 10 liters of water).

Adult insects and their larvae begin to eat the onion from the bottom; it is impossible to notice them.

Nematode It is dangerous because it cannot be noticed; it settles in the ground for many years. You can fight it by preventing its occurrence.


The causative agent of the infection is the affected onion, which overwinters among other bulbs. Infected onions do not differ in appearance from healthy ones, so it is difficult to detect the disease immediately.

After planting, diseased plants develop and grow without problems for about a month, but then the leaves turn yellow and wither. On the surface of the leaf plates you can see a coating that appears to be dirt.

The infection is transmitted to healthy specimens through the air and during precipitation. Because the favorable conditions Humidity and heat serve to develop the fungus; when storing onions, monitor the temperature and ventilate the room.

Preventive measures: compliance with crop rotation, early sowing, exclusion of manure when fertilizing, use of fertilizers with nitrogen and superphosphate, before planting, treatment of seedlings by heating for up to 8 hours at a temperature of 40°C.

You can fight the fungus by spraying with “Fitosporin” or “Fito-plus”. This the best option: After processing, onions can be eaten after 2 days.

Anthracnose on leaves appears as dark green spots and circles. Leaves change color, become deformed and dry out. How to treat onions so that they don’t turn yellow and spoil? Plants can be sprayed the following compositions: copper sulfate, Bordeaux mixture or copper oxychloride.

The fungus settles in shaded places and in dense plantings. Thin the seedlings, plant them in open, sunny beds and remove them after harvest. The infection spreads from plant debris or seeds.

Attention! After treatment with copper-containing solutions, onions should not be eaten for 3 weeks.

Cercospora

If brown spots with a yellow edging appear on the leaves, this is cercospora. This infection overwinters in unharvested plants and their seeds. In the spring, during new plantings, the fungus is transmitted to seedlings through the air or by raindrops. Remember to clean the soil well after harvesting. The following drugs will help fight the fungus: “Fitosporin” or “Fito-plus”.


A common disease that accompanies onions is cervical rot. It is impossible to fight it, since when it gets into the open onion neck, the onion rots. This disease manifests itself during crop storage. It must be taken into account that in rainy summer Onions must be thoroughly dried before storing.

Did you know? The first written mention of a bow is found in the Bible. When describing all the hardships of the Israelites' life in slavery, it is mentioned that they ate onions. The ancient Greeks valued onions for healing properties, but were considered poor people's food.

Quite often the tips of onions turn yellow; we’ll look at why this happens further.

A common disease for all types of onions - bottom rot.It affects the onion during development, and the onion feathers suffer, turn yellow and dry out. The bad thing is that this disease can only be prevented.

Carefully choose a place for planting: there should be no stagnation of moisture. If you find an infection, plant onions in this area no earlier than after 5 years.

Before planting, disinfect the seedlings, and the best predecessors for onions are grains. Store the harvest correctly, do not neglect compliance temperature regime, humidity and ventilation.

Improper care of onions is one of the reasons for yellowing

Many diseases in plants appear as a result of non-compliance with the standards of caring for them, inattention during harvesting and neglect of methods of disinfection of premises for storing garden crops.

The first reason is the onion secretive proboscis. These pests overwinter in the soil or in onions that for some reason have not been removed. Adult beetles eat through the feathers of the onion, it begins to dry out, and white spots appear around the holes formed. The pest larvae eat away longitudinal tracks inside the feathers, resembling white stripes. Then the tips of the feathers begin to turn yellow, the feathers curl and dry out. To prevent onions, you need to constantly and thoroughly loosen the bed, adding mustard powder, ground black or red pepper, and wood ash. Remains of onions should be disposed of. Do not forget about crop rotation - the onion ridge must be moved annually to another place, preferably away from the previous one. Yellowed feathers must be trimmed, leaving 4 centimeters.


The second reason why onions turn yellow is onion fly. Onions infected with the larvae of this pest turn yellow early and... Not only the feather, but also the bulbs suffer from the onion fly. They begin to rot and are easily pulled out of the soil. To prevent onions from turning yellow due to the onion fly, you need to dig the bed deeply, sow as early as possible, and remove already infected plants in a timely manner. Carrots will be a good neighbor for onions. These crops will help each other repel pests with their smells. Folk remedies to combat yellowing of onion feathers - tobacco or tobacco dust, ash. They sprinkle the onion bed. In addition, every three weeks you can water the onions with salt water (200 grams of salt per bucket of water). Water carefully, strictly under the bulb. First time can be used salt water when the feather has grown to 5 centimeters. After harvesting, the bed should be thoroughly cleaned of onion residues.


The third reason is nitrogen deficiency. After prolonged precipitation, along with rainwater, nitrogen compounds go deep into the soil and become inaccessible to onion roots. To prevent onions from turning yellow, feeding is necessary in this case. nitrogen fertilizers(ammonium sulfate, saltpeter) or manure infusion.


To prevent onions from turning yellow, you need to organize proper watering. From large quantity moisture, the onions begin to rot, so you need to water the onion bed rarely, but abundantly.


Onion, like everyone else vegetable crops, unfortunately susceptible to disease. This is bacterial rot, rust, bottom rot. These fungal diseases accompanied by yellowing and subsequent death of the plant. To prevent onions from turning yellow as a result of diseases, you should use only absolutely healthy seed, which is recommended to be heated for 10 hours at 40 °C before planting. Pre-treat the soil with the preparation “Hom” (40 grams per bucket of water).


At the end of July, the onions ripen and the onion feathers naturally turn yellow. There is no need to water it at this time. The harvested crop should be sorted, dried and properly stored.

It is impossible to imagine a housewife's kitchen without onions. Let the tears flow like a river, because many dishes require a vegetable. Therefore, onions are grown everywhere on private plots. It is planted either for winter or spring. Onions are growing well. Quite rarely he is capricious and shows dissatisfaction. But oh serious problems signals. Often - yellowing of the feather.

What to do if the onion turns yellow?

It all depends on the season. If the onion began to turn yellow in June, for example, then this is bad. The plant is not happy with something. Or someone got started in the garden. You need to figure out why the onion feathers turn yellow and take action. If this happens at the end of July, then there is no reason to worry. The harvest began to ripen. We'll be cleaning up soon.
Provocateurs of yellowness:
Why do onion leaves turn yellow?

Causes of the problem: a pest has infested, there is not enough nitrogen in the soil, the plant lacks moisture. Rescue measures will depend on the specific cause.


Pests:
As a rule, the plant is damaged by flies and secretive proboscis.

Onion fly.

Symptoms of its presence: feathers turn yellow and wither early, a larva can be found in the bulb, the vegetable rots, and the plant is pulled out of the ground very easily, even accidentally during weeding.

Pest targeting:

1. Size adult- about seven millimeters. The body is yellowish-gray with dark sparse stripes.

2. Larva - white worm with cone-like processes at the end. It can be seen in the bulb or in the soil around the plant.

Fly pupae overwinter in the soil. In spring, the pupae wake up. The laying of eggs coincides with the flowering of dandelions. After a week, the larvae appear. They make their way into the bulb and feed on it.

Protective measures:

  • Deep digging of the soil before sowing;
  • early boarding;
  • proximity to carrots, the smell of which repels flies;
  • destruction of infected plants;
  • sprinkling the ground around the onion with ash mixed with tobacco dust;
  • removing all plant debris from the garden bed.

Onion sneaker

Very dangerous pest, which eats feathers from the inside. Signs of its invasion: on the leaves - white spots and longitudinal stripes, yellow tips of feathers, curling and drying of feathers. For young plantings, both adults and larvae are dangerous.

How to recognize a pest?

1. Adult beetle - small insect up to two millimeters long. The body is covered with light scales. The tarsi and elytra are brownish. There is a light stripe at the base of the elytra.

2. The larva is a light worm with a dark head.

Secretive proboscideans overwinter in the ground, grass, bushes or unharvested onions. This is what they feed on in the spring, gradually moving to fresh plantings. The female gnaws the onion feather and lays eggs there. After two weeks, the larvae are born. They eat the inner contents of the feathers and then descend into the soil to pupate.

Protective measures:

  • timely removal of plant residues;
  • sowing on ridges distant from the previous year’s plantings;
  • regular loosening of row spacing;
  • cutting off damaged feathers plus loosening.

Lack of nitrogen in the soil

It can be observed both on dry days and on rainy days. Nitrogen is absorbed in dissolved form, so moisture is needed. At the same time, after heavy rainfall, nitrogen compounds go too deep, where the plant’s roots cannot absorb them.

To compensate for nitrogen deficiency, onions are periodically fertilized with saltpeter, ammonium sulfate, urea or slurry.

Lack of moisture

During active growth To gain strength, onions need regular watering.

  • The plant is watered before and after weeding;
  • pour water into the grooves made between the green bushes;
  • for dense plantings, when you have to water the feathers, use a watering can so that the water does not wash out the soil near the bulb;
  • Check the need for watering with your finger; if the soil is dry at the depth of the nail, then you need to water it;
  • One and a half months before harvesting, watering is stopped.

Feather Rescue:

Let's look at a few traditional methods comprehensive fight against the problem. That is, recipes that allow you to eliminate several causes at once.

1. Dissolve half a glass of table salt and one ampoule of ammonia in ten liters of warm water. Add three grains of ash. Water with this mixture once every ten days. Until the feathers turn green again.

2. Soak the planting material in strong potassium permanganate and plant it in rows sprinkled with salt.

3. For half a bucket of water - half a tablespoon of iodine, two bags of potassium permanganate and five hundred grams of soda. This is a concentrated composition. It also needs to be diluted in water in a ratio of 1:10. And water it already diluted.

4. Sprinkle the rows with sand mixed with naphthalene.

5. Water the onions with salt water and potassium permanganate.

Non-compliance agrotechnical techniques and ignoring preventive measures becomes the main reason why onions may turn yellow. Either complete or partial yellowing of the leaves is observed. At the same time, they look lethargic and weakened. The situation may threaten a complete loss of the onion harvest.

A common reason why onions turn yellow is a lack of nitrogen in the soil. Its deficiency usually develops when the soil is depleted or in hot weather. Onion roots receive nitrogen only in dissolved form, and in dry weather it stops reaching the plants. On the contrary, excessive soil moisture or frequent rains can lead to leaching of nutrients from the soil.

With a lack of nitrogen in the soil, the plant slows down its growth, the feathers become short and thick. First, the color of the lower leaves becomes pale green, and then the young feathers turn completely yellow. A lack of nitrogen can also lead to bottom rot.

To avoid shortage nutrients in the ground, it is necessary to fertilize in a timely manner. A solution based on urea or ammonium nitrate and an infusion of manure is suitable. The components must be dissolved in water so as not to burn the roots. The procedure can be repeated after 5–6 days.

Influence of pests

Onions often turn yellow as a result of pest attack. They not only suck the juices from the plant and gnaw on the greens and roots, but also carry various infectious diseases.

Why are onion moths dangerous?

The onion moth is a small butterfly (body length about 8 mm) of a dark brown color with light gray wings. At the end of spring, females begin to lay eggs at night on the soil near the bulbs or between the leaves. After 7–8 days, yellow-green caterpillars emerge from the eggs, 1 cm long.

Great damage from insects is observed, especially in dry, hot weather. The leaves begin to turn yellow and dry out at the tips, and light spots may appear.

What to do if the onions in the beds turn yellow due to the activity of onion moths? The effect of drugs such as Iskra, Dachnik, Metaphos is effective. Treating the soil with wood ash and tobacco dust helps repel pests. Sevok should be sown as early as possible. It is recommended to remove all plant debris from the site in the fall and dig up the soil before the onset of frost.

Onion thrips

Onion thrips is a small yellowish insect, about 1 mm long. It sucks the juices out of the plant, causing the onion feathers to turn yellow and dry out. The female lays eggs in the leaves, from which gray-yellow-green larvae emerge after 5–6 days.

Thrips, like onion moths, overwinter in the soil, burrowing into the remains of vegetation or in bulbs that are intended for sowing. That's why preventive measure is the autumn digging of the site with the application of fertilizers and cleansing of the remaining tops. Before planting, the sets must be disinfected by placing, for example, in weak solution potassium permanganate or dip in hot water(water temperature about 45 degrees) for 10 minutes. If a pest is detected in the garden bed, it is treated with insecticides (Iskra, Konfidor).

Onion fly and how to destroy it

The most common pest of onions is the onion fly, which affects any of its varieties. It resembles an ordinary fly, the body length reaches 8 mm, the color is gray-yellow.

In mid-May, when dandelion and lilac begin to bloom, the female of this insect begins to lay eggs in the soil near the onion beds, less often between young leaves or between dry scales of the bulb. After just 6 days, the larvae that emerge from the eggs begin to eat the bulb from the bottom. Feathers start to cover yellow spots, and soon the entire plant dies.

The larvae develop within three weeks. They then burrow into the ground and pupate. After some time, new individuals appear, approximately at the end of July.

  • early planting of onions;
  • it is recommended to plant carrots in the neighborhood;
  • during the summer, flies in the beds are treated with a mixture of wood ash, tobacco dust and ground pepper;
  • The drug Bazudin, which is mixed with sand and added to the soil, helps repel insects.

If the larvae have already begun their destructive activity, treatment with the preparations Kreotsid, Muhoed, Aktara, Karate Zeon will help. Onion processing is effective saline solution with a few drops ammonia(200 g of salt should be dissolved in 10 liters of water).

Stem nematode

Stem nematodes, like onion flies, lead to yellowing of leaves and loss of yield. The nematode resembles a small worm (1.5 mm in length) that penetrates the bottom of the onion. Insects feed on the sap of the plant. The bulb begins to rot. White dots and stripes appear on the feathers, then the onion leaves turn yellow, curl and dry out.

It is difficult to fight the nematode, so the only thing that can be done is to follow some rules:

  • carry out processing planting material saline solution or hot water;
  • It is recommended to plant onions in the same area no earlier than after 4 years;
  • You can plant marigolds between the rows; an infusion of these flowers also helps;
  • Timely weeding should be carried out.

If the onions in the garden have turned yellow due to pests remaining in the soil, then the row spacing can be watered with a solution based on Fitoverm or Akarina powder. The drugs are toxic, so it is not recommended to use them too often.

The secretive weevil and the fight against it

The small-sized secretive beetle feeds on green onion leaves. His body gray, oval shape. In spring they begin to eat young shoots. After laying eggs, beetle larvae appear within 2 weeks and begin to eat the greens. The larvae are yellowish in color with a brown head, about 6 mm long. First, white spots appear on the leaves, and then the onion feather in the garden turns yellow and dries out.

Preventive measures are:

  • digging the soil in the fall after harvesting;
  • clearing the area of ​​plant debris and weeds in the fall;
  • It is recommended to plant onions annually in a new place.

If this insect appears in the beds, you need to loosen the rows with the addition of tobacco dust, wood ash or ground pepper. If there are not too many pests, you can collect them manually. Spraying with a solution based on the drug Karbofos helps destroy pests.

What is wrong with onions?

Onions turn yellow not only due to the invasion of insect pests. Very often, fungal, bacterial and viral infections can spoil the harvest.

Rust

Rust is a fungal disease of onions. Affects green leaves, resulting in nutrients insufficient quantities penetrate the bulb, and the yield decreases.

First, yellow-brown stripes or spots appear on the leaves, which grow over time. The disease leads to complete yellowing and drying out of the green part of the onion.

Preventive measures mainly concern planting material, which needs to be heated and disinfected. If a problem is found onion beds sprayed with a solution based on copper oxychloride. The component is diluted in a bucket of water and 30 ml is added liquid soap. You can use the drug Hom or Metronidazole.

Bulb rot caused by bacteria

Bulb rot can only be seen on the harvest. The affected heads soften and dark stripes can be found between the scales. Such bulbs cannot be stored. This onion disease is carried by insects.

Only healthy, dense bulbs are selected for planting. The soil is treated with Hom or Metronidazole. If you plant an affected seedling, the plant will grow weak. Young leaves immediately turn yellow and dry out.

Fusarium, bottom rot

All varieties of onions can suffer from a fungal disease such as fusarium. First, the onion feathers turn yellow, curl, and then dry out completely and the plant dies. On the bottom and in the axils of the leaves you can notice a white or light pink coating.

The following actions can be used to prevent damage to the bottom rot:

  • the area for planting onions should be on a hill and well lit;
  • You should not plant onions in the same area for several years in a row; grain crops are considered the best predecessors;
  • you need to plant vegetables and harvest on time;
  • seeds are selected and disinfected before planting.

When the first signs of the disease appear, treatment with Fitosporin and Quadris will help.

Alternaria blight

Another fungal disease that affects onions is Alternaria. Green feathers are affected first. They develop white spots that turn brown over time. Gradually, the disease spreads to the bulb, it becomes covered with black mold and rots.

Such preparations as Acrobat, Cabrio Duo, Polyram, Fitosporin will help save onions from yellowing of the feathers. In the fall, after harvesting, all tops and husks are removed from the garden.

Failure to follow the rules of onion care leads to yellowing of the feather

If you don't care for it correctly vegetable plantings, then they become weak, lethargic and the leaves change color. Watering and fertilizing must be carried out in a timely manner and in certain quantities.

Insufficient or improper watering

With proper watering, the onion head is formed dense, juicy and for a long time stored. In the first days, when the onion is just taking root, you need to water it generously every three days. Then watering is reduced to once a week. In July, when the head is forming, it is enough to water once every 1.5 weeks.

Water for irrigation should be warm (about 20 degrees) and it is better to pour it under the root. The best time considered for watering early morning or evening hours. If the weather is cloudy, then it is possible at lunchtime.

Onions love moist soil, but excess moisture can lead to stunted growth due to leaching of micronutrients, rotting and the spread of infections. In addition, the onion head is small and tasteless.

Another reason why normal conditions caring for the plant, the leaves turn yellow, weather conditions change. Return of frost, drought or heavy rains can affect the quality and quantity of the harvest.

Lack of feeding

It is recommended to fertilize during watering. The first application of fertilizers is carried out two weeks after planting. You can make a solution from ammonium nitrate, superphosphate and potassium salt. The next application of fertilizing is carried out after another two weeks.

What to do?

There are many ways to deal with onions that turn yellow, dry out and die. The main thing is to recognize the cause in time.

Folk remedies for yellowing feathers

If pests are the cause of the yellowing of the onions, then folk remedies will help:

  • One ampoule of ammonia, 200 g of ordinary table salt and 200 g of wood ash are dissolved in 10 liters of water. It is recommended to water the beds with the resulting solution after 10 days, until the leaves turn green again.
  • Dissolve 1 kg of soda, 10 ml of iodine and 4 bags of potassium permanganate in a bucket of water. The finished concentrate is diluted with water in a 1:1 ratio and the beds are watered. The solution is enough for a large planting area.
  • Plant infusions are prepared from dandelions, wormwood, calendula, and hot pepper.

As a preventative measure, you can water the rows with salt water or sprinkle them with a dry mixture of tobacco dust, wood ash and ground pepper.

Chemical plant protection products

In the event of a mass attack of pests, due to which the onions have turned yellow, spraying is carried out chemicals. Among the popular and effective: Mostilan, Iskra, Aktara, Karbofos, Leptotsid, Kreotsid.

To prevent onions from turning yellow, you can prevent a lack of nitrogen in the soil by adding urea or ammonium nitrate. Between the rows of onions, grooves are dug and 6 grams of ammonium nitrate per 1 square meter is poured. m.

How to water the beds to effectively combat yellowing of leaves? Most vegetable growers use salted water. A mixture of wood ash and carrot seed powder gives a good effect. You can treat the beds with wood ash or chamomile pollination. If the onion turns yellow, you can feed it with complex fertilizer.