What to do if the family onion began to turn yellow. Onion grief, or why the onion turns yellow in the garden

Good afternoon, dear readers!

Whoever has at least a small courtyard has a small garden bed with onions. What can we say, if there is a lot of land, then more space is allotted to him. Unfortunately, onions often get sick and turn yellow right in the garden - what to do in this case? And this is one of the headaches of any summer resident.

If he changed his color in mid-late August, then it's okay - at this time he is almost ready for harvesting. And if the feathers or tips of the onion turn yellow in the midst of its growth and formation in June-early July, then urgent measures must be taken.

What to do if the onion turns yellow in the garden

Reasons why onions turn yellow

First, you need to understand the causes of onion yellowing. They may be different:

lack of trace elements in the soil
insects - pests
disease
improper care

The first reason is a lack of nitrogen

A common cause of yellowing onion feathers is a lack of nitrogen in the soil. Onions are especially hungry in hot weather, since nitrogen is absorbed only in dissolved form. And also, in the rainy season, there is a lack of nitrogen. Water washes everything beneficial features from upper layers soils, which are so necessary for growth in the first half of summer.

The second reason is pests.

onion fly- similar to the usual. Its larvae do more harm. When they hatch, they penetrate the bulbs and eat them from the inside. The leaves turn yellow and dry, and the bulb itself rots. To check, you need to click on the bulb. When damaged, it becomes soft. Or pull the bulb out of the garden and carefully examine the roots - they may have small white worms on them.

Secretive trunk, otherwise weevil- a small beetle, has a black or dark gray color. It eats the pulp of the leaves, on which white stripes or dots then appear. Affected leaves dry up. Unlike other pests, it does not harm the bulb itself, only the green leaves.

The third reason is illness

Fusarium fungus infects the bulb, which later produces diseased plants. A mycelium appears, gradually penetrating the leaves. They turn yellow, break, become lethargic.

Alternariosis- develops on leaves affected by gray rot. Watery spots appear that turn brownish. The spot enlarges and acquires an ovoid shape. It begins to develop, the onion leaf breaks. If a spot forms on the neck of the onion, a constriction appears that affects the scales of the bulb.

root rot- stains form Brown color on the ground or slightly below. The spots grow and cause rotting of the underground part of the onion. Onions become infected from the moment the seeds appear, or may die before they appear on the ground. Rot develops due to the large stagnation of water in the ground.

pink rot- first, the onion roots turn yellow, then turn pink, dry out and die. The bulb stops growing, but this has little effect on the leaves. In some cases, the tips dry out.

Gray and neck rot- small white spots appear on the leaves with a light green edging around. The onion grows slowly, the leaves are crooked, rotting closer to the neck of the bulb. A gray coating forms between the scales of the bulb.

Is the most dangerous disease, as rot develops imperceptibly and slowly. Top part the bulb becomes soft, a fluffy coating forms. The bulb is covered with a black coating and infects healthy ones.

Reason four - improper care

Onions, like many plants, love wet soil For this, you need to moisturize it more often. Preferably in the evening. But don't flood. About 7 times in a month.

Improper watering is the most common mistake when growing onions. Proper watering includes not only watering, but also feeding. Loosen the soil more often, both before and after watering.

How to help the onion not turn yellow?

Folk remedies for help

Salt from onion flies and onion diseases

When the length of the pen reaches about 8 cm, you need to carefully, without hitting the leaves, pour the soil saline solution. A 10 liter bucket requires 200 grams of salt. When added ammonia(100 gr) the effect will increase. This method should be applied no more than four times per season, as it leads to soil salinization. To prevent this from happening, you need to try to pour the saline solution only on the bulbs, trying not to get on the ground and leaves.

Rescue from overheating

Onions do not like overheating; this negatively affects the roots of the plant, which leads to yellowing. Therefore, the onion grows well in early spring in greenhouses when it's still cool. In summer, you can cover the plants with covering material to direct Sun rays did no harm. But growing onions in the shade of trees does not work - the feathers stretch out and become thinner - the bulb almost does not grow.

Replenishment of nitrogen in the soil

To replenish stock nutrients and nitrogen, urea or ammonium nitrate and sulfate can be used. And also use complex mineral fertilizers.

The simplest and fast way nitrogen application will be mullein infusion.

To get rid of the onion fly, use a mixture of lime and tobacco, in equal proportions. Calculate 6 grams per 1 square meter. Etching should be done with the first appearance of flies, and repeated after a week. For a 10 liter bucket we take 200 grams of tobacco and the same amount of lime, we insist for a couple of days. We store in a dark place. Dilute twice and spray.

What to do if you water in moderation, and there is no sultry heat, and the leaves turn yellow? There is only one conclusion - the lack of strength in plants. During planting, the onion spent a lot of energy, so to speak, they ate all the useful substances in the soil. Over time, exhausted and left hungry.

To help you need to dilute in a 5 liter bucket liter jar litter, and let it brew for a couple of days. We take a bucket of water, pour a liter of this medicine and pour it between the rows. Thus, we feed and give strength for further growth.

If the onion has already turned yellow, there is a method that will help it recover. For a 10 liter bucket, warm water, pour a couple of handfuls of ash, an ampoule of ammonia, 100 grams of table salt. Mix well and pour over. Carefully. Water should not wet the feathers themselves.

This method helps with onion fly damage and other pests and diseases. To consolidate the result in the fall, it is necessary to dig up the soil. The deeper, the more likely successful harvest next year.

With proper and healthy care, onions will delight with their rich and pleasant - in green.

Video about yellowing onions

In the struggle for your harvest, it is better to resort to folk remedies, and not to poison with chemistry, which will harm not only humans, but also the soil. Now you know why the onion turns yellow in the garden and how to help it.

Sincerely, Sofia Guseva.

Watering

Culture loves moist soil. Water regularly (2 times a week), in moderate portions, so that the plants do not float in the water. It is desirable to "drink" in the evening, during the day it is impossible. At noon, there is a big risk of burning green feathers. Once a week, the day before watering, the soil is loosened to a depth of 2-3 cm. Mulching will help to constantly retain moisture in the soil and even a slight drought will not cause the onion to turn yellow.

Without watering, the onion will grow small.

nitrogen starvation

A prolonged period of rains or excessive watering leads to leaching from the soil useful substances. The lack of nitrogen in the soil affects not only onions, but also other neighboring crops, including. The color of the plants becomes light, whitish veins are visible, the fruits become smaller, the leaves curl.

Treatment of nitrogen starvation - additionally dosed fertilizer. With an excess, active growth of green mass begins to the detriment of flowering and head formation. Not to apply ready-made formulations, you can use vegetable peelings, hay, sunflower, green grass, nettle, dandelions, plantain.

Preparation: pour water into a barrel, add waste and, to speed up fermentation, candied jam, honey, sugar or even sour wine. We leave to ferment. In hot weather, after 3-4 days, the nitrogen solution will smell unpleasant - this is what you need! Refrigerate up to 2 weeks. We dilute 1 liter of nitrogen "potion" in a bucket of water and water the beds with onions. Please note that the best time to fertilize the soil is after watering or rain, then nitrogen will quickly penetrate into the soil.

Manure and manure are nitrogen-containing organic fertilizers.

Pests

What to do if the onion turns yellow from pests? Thrips, weevil and stem nematode can cause harm. The size of the offender is small and you will not immediately notice it. Distinctive feature their stay is a yellowing not of the tips of the pen, but of the entire length.

You can not plant onions every time in the same place. Observe. Return to the original place should not be earlier than after 4 years. It was during this time dangerous pests plants will come out of the soil.

In pest control, spraying with decoctions of tobacco, mustard, and garlic is used. Their preparation time is 3-4 days. However, when the onion has already turned yellow and there is no time for tincture, the mixture is brought to a boil, cooled and immediately sprayed. And the cake is scattered between the rows.

To prevent the appearance of onion flies, onions are planted near carrots.

The weevil is a beetle that harms only the feathers of the onion, it cannot damage the bulb itself.

Diseases

Fungal diseases are insidious and dangerous, bottom rot is one of them. It also causes the feathers to turn yellow. Recognizing the disease is easy, just remove one plant and look at the roots and bulb. The roots have a light coating, and the bulb is soft or covered with an unpleasant substance.

The reason for this phenomenon is dense planting and waterlogging of the soil. For disinfection, before planting, the onions are treated with a solution of potassium permanganate, and a drainage layer is laid on the bottom.

Loss of strength

If, with proper care and normal weather conditions, the onion feather still turns yellow, then this is a sign of weakness (when planting, the plant spends a lot of energy on adaptation). To support between plants, sprinkle with ash at the rate of 0.5 l per 1 sq.m.

If the sevok is planted too early, then during the period of frost there are high chances of freezing, as a result of which the tips dry out. However, the formation of bulbs does not have a special effect.

Recall that the natural process of yellowing of onion feathers, as a rule, begins at the end of July, when the bulb ripens.

Gardeners and gardeners consider onions to be a culture that is not demanding on growing conditions. Often they even forget to water or weed it. But sometimes this plant also begins to hurt and wither, forcing the owner to look for reasons why the onion turns yellow in the beds and what to do to save the crop.

ground part onion in everyday life they call feathers, and underground - a turnip. Leaves help the plant store nutrients. They begin to turn yellow and dry out by the end of July - the beginning of August, signaling the gardener to prepare for the harvest.

If the ground part begins to fall, turns yellow, the onion “lays down”, and it’s too early to pull it out of the ground, you need to figure out what can cause a change in leaf color.

The pen turns yellow for the following reasons:

plant diseases;
pests;
lack of nutrients in the soil;
improper onion care;
adverse weather conditions.

Diseases and how to deal with them

Onion culture is susceptible various diseases, which can be recognized only by carefully examining the affected plants. Fungi or viruses settle not only on the "tops", but also on the "roots". If the onion began to turn yellow in the garden, the withering plant should be pulled out and the condition of the leaves and turnips examined.

Rust

Onion rust is a fungal disease. The spores overwinter on plant debris and spread to new plants, causing the leaves to turn yellow and die. Close up, lesions appear as rounded yellow spots with ring-shaped raised orange-brown spores in the middle. Factors that facilitate the spread of the fungus include:

high crowding of landing;
lack of nitrogen and excess potassium in the soil;
high air humidity.

In this case, the bulbs receive less nutrients and develop worse, and during storage they are susceptible to damage by other fungi and bacteria.

Control and prevention methods include:

toolkit processing;
destruction of plant residues at the end of the season;
cultivation of hybrid resistant varieties;
use of cyclic crop rotation;
the infected plant is removed from the soil and burned outside the site.

bottom rot

With Fusarium, the onion feather begins to turn yellow and curl, starting from the tips, leading to the death of the entire plant. The roots rot, their color changes to brown, and the bottom of the bulb in the section looks grayish, watery. The bottom becomes softened to the touch. Saprophytic mushrooms, disease-causing, can persist in the soil for a long time, onion infection occurs through plant debris or other bulbs, both in the garden and in storage areas.

To prevent or manage the disease, you must:

use crop rotation;
plant varieties resistant to fusarium;
treat the onions in the beds with fungicides (using the preparations "Switch", "Maxim");
store onions at temperatures below 4 degrees.

Alternariosis

This is a fungal disease in which the leaves of the plant turn yellow. Watery oval lesions appear, with brown-burgundy edges and a yellowish border. The lesion spreads over the entire leaf, destroying it, after which it spreads further through the air. Signs of onion disease appear 1-4 days after infection. The pathogen is found wherever the crop is grown, but more often affects the shoots in conditions of high temperature and humidity.

If onion feathers turn yellow, the methods of struggle are:

crop rotation;
prevention of excessive moisture and crowding in the garden;
timely cleaning, destruction of infected onion tops.

Yellow viral dwarf onion

This is an onion disease of a viral nature. Spread by aphids, tools. At the initial stage, it attracts attention by the fact that the leaves begin to turn yellow in stripes along the conductive vessels. Then they become rigid, wavy and lodge. But with this disease, not only the feathers turn yellow, the onion lags behind in growth, the arrows look shorter, few seeds are formed.

To help fight the virus:

aphid control;
toolkit processing;
dissociation of onion plantings with other members of the subfamily.
removal of infected plants.

Pests and their control

Garden pests can also cause the leaves to turn yellow and dry. Insects in the onion garden have small size, but can easily deprive the owner of the crop.

onion moth

Onion moth butterflies reach 0.7 cm in length, have a gray-brown color. They lay their eggs at night, remaining unnoticed for a long time. The larvae of these insects hatch from May to September. They feed on onion leaves. Transparent spots form, the feather turns yellow. The second generation of the moth eats the turnip, causing neck rot.

To help you deal with insects:

use of crop rotation;
weeding out diseased plants, loosening;
destruction of weeds, plowing the land at the end of the season;
alternating plantings of onions with carrots, mustard.
treatment with the insecticide "Iskra" or the biological product "Dachnik".

thrips

If the tips of the feather turn yellow on the onion, it is necessary to inspect the plants for damage by thrips. In the axils of the leaves, lesions can be seen that resemble silver specks and a little later black dots, and sometimes the small light brown elongated insects themselves.

A damaged feather becomes more susceptible to other infections and dries out. Thrips not only suck the juice from the leaves, but also lead to cosmetic damage to the neck and scales of the bulb. Favorable conditions for reproduction:

lack of weeding;
dry air and earth in the garden.

Thrips hibernate in the surface layer of soil, on the left tops, bulbs, so the fight against them consists in:

deep plowing;
ensuring crop rotation;
unfolding sticky traps between rows;
alternating onion plantings with repellent plants - calendula, tagetes;
processing bulbs before planting by immersion in hot and cold water for several minutes;
regular watering and weeding beds.

onion fly

The onion fly appears in May and lays its eggs close to the ground. The hatched larvae of this insect begin to gnaw through the bulb, as a result of which the leaves turn yellow. Having killed one plant, the fly moves on to the next, destroying the crops. The surviving plantings are weakened and susceptible to other diseases.

stem nematode

The stem nematode is a small worm that enters the garden along with the seed or is stored in the ground, on plant debris. The pest enters through the bottom of the turnip or pores on the underside of the leaves. If it infects plantings of sevka, the plants turn yellow and die. With later reproduction of worms in the tissues of the culture, the leaves turn yellow and bend at the base, the underground part begins to lag behind in growth, becomes covered with a waxy coating. Such a crop is poorly stored and more often healthy is damaged by other pests.

Infected material is destroyed. Conduct pre-sowing treatment bulbs and seeds before planting: black onions are first soaked in cold water for 3-4 hours, after which they are immersed in hot water with a temperature of about 40 degrees for 10 minutes. Sevok is kept in water with a temperature of 45 degrees for 15 minutes.

Weevil

Weevil is a small dark-colored bug. It hibernates in the soil and begins the meal with the bulbs left in the fall, gradually moving to young plants. The tracks of this insect look like round, whitish, arranged in rows spots on the leaves. The pest inflicts the greatest damage on seedlings of nigella - onion plantings turn yellow and die in the spring. Adults lay eggs in leaf cavities. The beetle larvae hatch and begin to gnaw out passages that look like longitudinal stripes up close. The pen begins to turn yellow from the top and dries out. The mass death of plants is rare, new leaves grow over the summer, and a decrease in the yield is possible.

If the onion feathers begin to turn yellow from the tips, it is necessary to inspect the plantings; when a weevil is found, apply:

deep plowing of the land before winter;
spraying with infusions of garlic, red pepper, mustard;
treatment with a solution of "Karbofos" (unacceptable when growing onions on a feather), "Agravertina", "Fitoverma".

Lack of nutrients in the soil

The onion feather also begins to deteriorate from a lack of nutrients. Especially sensitive to the composition of the soil is the family onion, which begins to turn yellow when planted on a poor substrate.

Having carefully examined the beds, excluding possible diseases or pests, the gardener may remember that he did not fertilize in the spring, or planting plants for the first time revealed a lack of micro or macro elements. It should be listed which substances in deficiency or excess cause the onion to turn yellow:

manganese deficiency. This trace element helps in the formation of the chlorophyll pigment, which gives the leaves green coloring. With its deficiency, yellow stripes form on the leaves, the development of the turnip slows down. To adjust the manganese content, use manganese superphosphate, ash, manganese sulfate solution.
Nitrogen deficiency. It is possible to assume a lack of nitrogen in the soil if no other visible reasons for the deterioration of the condition of the leaves can be found. In this case, it is imperative to feed the onion so that the onion feathers do not turn yellow. To do this, dissolve ammonium nitrate in water at the rate of 20 g per 6 liters per 1 m2.
Excess nitrogen. In this case, the bulbs will rot. To save the crop, they are treated with a solution of potassium sulfate and superphosphate, 1 tsp each. 12 liters per 2 m2, and after a few days the soil is loosened and ash is added.
Magnesium deficiency also causes a change in the color of the ground part - old leaves begin to turn yellow, the tops turn brown, the feather dries up and dies. In this case, foliar top dressing is necessary, which is carried out by spraying a solution of magnesium sulfate (1 tablespoon of the substance per 10 liters of water).

If the family onion turns yellow, ash or a solution of 7 g of potassium salt, 5 g of ammonium nitrate per 6 liters of water per 1 m2 is added to the soil.

Failure to comply with the rules of care

Onions in the garden are sensitive to care. It is enough to disrupt the irrigation regime, as the plant will begin to signal a deterioration in conditions. In order not to start turning yellow onion feathers, you should adhere to the following rules:

Water the onion with water at room temperature.
When the plants begin to produce roots, they should be watered abundantly at least 2 times a week.
Mulching will help keep the soil from drying out.
The best watering time is in the morning or evening hours.
Hard water for irrigation is softened by adding a little acetic acid.
Since June, onions have been watered once a week, in July once every 1.5 weeks.

The watering schedule should be adjusted to the weather conditions: if the summer is dry, hot, then the plants need to be “watered” more often so that the succulent leaves do not begin to turn yellow. If there are frequent rains, it is better to abandon mulching and periodically loosen the soil.

Weather

Unfavorable weather conditions can cause the onion to turn yellow and “lay down”, even if all other conditions for its growth are met. In case of heavy rains, the beds are covered with a film, and the soil is sprinkled with a mixture of ash and sand. In the event of a drought, precious moisture can be saved by watering them in the morning and mulching the ground.

If the tips of the onion turn yellow due to the fact that return frosts “walked through” them, no measures should be taken, the feather will grow back over time.

Folk remedies to combat yellowing

The use of folk remedies is based on many years of observation of cultivated plants and pests. Creation comfortable conditions by planting beneficial "neighbors" and safely killing voracious insects, it will help to preserve the crop without the use of pesticides. In the case of onions, this means that the use of folk remedies allows you to tear it “on a feather” while the onions are poured.

"Salting" will protect the seed from the nematode if, before planting, the seeds and nigella are kept for 20 minutes in a solution of table salt at the rate of 1 tbsp. l. for 1 liter of water.
Powdering the plants with a mixture of ash and tobacco will help prevent the feast of the onion fly. And so that the plantings do not begin to turn yellow from the invasion of its larvae, gardeners water the onions with the following solution: pour 200 g of tobacco with 2 liters of boiling water, leave for several days, then add 1 tbsp. l. ground red pepper and laundry soap, then add water to a whole bucket.
So that the bed does not turn yellow from the onion moth, when the shoots grow by 5 cm, the ground on it is watered with a strong solution of table salt (100 g of sodium chloride per 1 liter of water).
It is recommended to alternate rows of onions with carrots and marigolds. They dislike harmful insects and the pungent smell of currants, so planting sevka next to berry bushes is also justified. Legumes "raise" nitrogen to the surface and share it with onions
To save the crop from rotting of the bottom will help the processing of the sevka before planting in a solution of potassium permanganate. And if the summer turned out to be rainy, the arrangement of drainage in the garden will help.
From thrips, onions should be watered with a solution of celandine at the rate of 1 part of dry grass per 10 liters of water.
The weevil also does not like the salty or bitter taste of onions, so spraying with saturated solutions of salt, pepper, mustard or garlic will drive away harmful bug before he settles in the garden and the leaves begin to turn yellow.
When the leaves suffer from a lack of nitrogen, they can also be helped without resorting to chemicals. To saturate the plants, prepare the fertilizer of the following composition: vegetable food waste, weeds, hay, cut grass, add a little sour jam or sugar, pour water, stir. After a few days, active fermentation will make itself felt characteristic bad smell. This remedy should be diluted with water in a ratio of 1:10 and water the onions.

Preventive measures

Preventive measures will help protect onion beds before the leaves begin to turn yellow.

Compliance with a 4-year crop rotation.
Thorough cleaning, burning plant residues after the end of the season.
Deep digging of the earth with the application of fertilizers suitable for this type of soil.
Prevention of the transfer of the pathogen with equipment and tools to other beds.
Destruction of diseased plants.
Planting onions respecting the interval between plants, avoiding crowding.
Timely weeding.
Seating in the aisles of plants that repel pests.
Use of healthy planting material.
Planting hybrid, early-ripening, disease-resistant varieties.

To prevent the leaves from turning yellow, onion planting material is treated as follows:

alternating rooms in hot and cold water;
soaking in a solution of potassium permanganate - 1 liter of water per 1 g of the substance;
treatment with Fitosporin solution to prevent fungal diseases Luke. For nigella, you need 0.5 tsp. funds per 100 g of water, sevok is sprayed with a solution of 10 g of the substance per 0.5 l of water.

Expert opinion

Maria Vlasova

gardener

Ask an expert

Contrary to popular belief, onions in the garden are demanding on the composition of the soil, the amount of moisture and are sensitive to a number of diseases and pests. Compliance with the rules of cultivation, inspection of plants in the garden will help prevent onion troubles, prevent it from turning yellow, and allow you to grow both “tops” and “roots”.

Non-compliance with agricultural practices and ignoring preventive measures becomes the main reason why onions may turn yellow. There is either complete or partial yellowing of the leaves. At the same time, they look lethargic, weakened. The situation may threaten a complete loss of the onion crop.

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 ceases to flow to plants. Conversely, excessive soil moisture or frequent rainfall can leach nutrients out of the soil.

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

In order to prevent a lack of nutrients in the soil, it is necessary to carry out top dressing in a timely manner. A solution based on urea or ammonium nitrate and manure infusion is well suited. 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 attacks. They not only suck the juices from the plant and gnaw on greens and roots, but also carry various infectious diseases.

What is dangerous onion moth?

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

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

What to do if the onion turned yellow in the beds due to the activity of the onion moth? The effect of drugs such as Spark, Summer Resident, Metaphos is effective. Cultivation helps to scare away pests wood ash, tobacco dust. Seeds should be sown as early as possible. It is recommended to remove all plant debris from the site in the fall and dig the ground even before the onset of frost.

onion thrips

Onion thrips is a small yellowish insect, its length is about 1 mm. It sucks the juices from the plant, as a result, the onion feathers turn yellow and dry. The female lays eggs in the leaves, from which grey-yellow-green larvae appear 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 the cleansing of the remaining tops. Sevok must be disinfected before planting by placing, for example, in a weak solution of potassium permanganate or dipped in hot water (water temperature is about 45 degrees) for 10 minutes. If a pest is found in the garden, they are treated with insecticides (Spark, Konfidor).

Onion fly and how to destroy it

The most common onion pest is the onion fly, which infects 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 onion beds, less often between young leaves or between dry bulb scales. After 6 days, the larvae that emerged from the eggs begin to eat the bulb from the side of the bottom. The feathers are starting to shed yellow spots and soon the whole 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, the flies of 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 to scare away insects.

If the larvae have already begun their destructive activity, treatment with Creocid, Mukhoed, Aktara, Karate Zeon will help. It is effective to treat the onion with a saline solution with a few drops of ammonia (200 g of salt must be dissolved in 10 liters of water).

stem nematode

The stem nematode, like the onion fly, leads to yellowing of the leaves and loss of yield. The nematode resembles a small worm (1.5 mm long) that penetrates the bottom of an onion. Insects feed on plant sap. The bulb starts to rot. White dots and stripes appear on the feathers, then the onion leaves turn yellow, curl and dry.

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

treat planting material with saline or hot water;
it is recommended to plant onions in the same area no earlier than after 4 years;
marigolds can be planted between the rows, an infusion of these flowers also helps;
timely weeding should be carried out.

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

Weevil secretive trunk and the fight against it

A small beetle, the secretive proboscis, feeds on green onion leaves. His body gray color, oval shape. In the spring, they begin to eat young shoots. After laying eggs, after 2 weeks, beetle larvae appear, which begin to eat 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.

Preventive measures are:

digging the soil in the fall after harvest;
cleaning the site from plant residues and weeds in the fall;
it is recommended to plant onions annually in a new place.

If this insect appears on the beds, it is necessary to loosen the aisles with the addition of tobacco dust, wood ash or ground pepper. If there are not too many pests, then you can collect them manually. It helps to destroy pests by spraying with a solution based on the drug Karbofos.

What's wrong with onions?

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

Rust

Rust is a fungal disease of onions. It affects green leaves, as a result, nutrients in insufficient quantities penetrate to the bulb, and the yield is reduced.

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

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

Bulb rot caused by bacteria

Bulb rot can only be seen on harvested. Affected heads soften and dark streaks can be found between the scales. Such bulbs are not subject to storage. 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 set, then the plant grows weak. Young leaves immediately turn yellow and dry.

Fusarium, bottom rot

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

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

the site for planting onions should be on a hill and well lit;
you should not plant onions for several years in a row on the same site; cereals are considered the best predecessors;
you need to plant a vegetable and harvest on time;
seeds before planting are selected and disinfected.

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

Alternariosis

Alternariosis is another fungal disease that affects onions. Green feathers are affected first. White spots form on them, which turn brown over time. Gradually, the disease passes to the bulb, it becomes covered with black mold and rots.

Such preparations as Acrobat, Cabrio Duo, Poliram, Fitosporin will help save the bow from yellowing of the feather. In autumn, after harvesting, all tops and husks are removed from the garden.

Failure to follow the rules for caring for onions leads to yellowing of the pen

If not properly cared for vegetable plantings, then they become weak, lethargic and the leaves change color. Watering and top dressing should be carried out in a timely manner and in certain quantities.

Insufficient or incorrect watering

With proper watering, the onion head is formed dense, juicy and stored for a long time. In the early days, when the onion is just taking root, you need to water it abundantly 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. best time for watering is considered 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 formed small and tasteless.

Another reason why, under normal plant care conditions, the leaves turn yellow, weather conditions become. The return of frosts, droughts or heavy rains can affect the quality and quantity of the crop.

Feeding shortage

During watering, it is recommended to carry out top dressing. The first fertilization is carried out two weeks after planting. You can make a solution of ammonium nitrate, superphosphate and potassium salt. The next top dressing is carried out in another two weeks.

What to do?

There are many ways to do if the onion turns yellow, dries and dies. The main thing is to recognize the cause in time.

Folk remedies for yellowing pen

If pests have become the cause of yellowing of the onion, then folk remedies will help:

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

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

Plant protection chemicals

In the event of a mass attack of pests, due to which the onion turned yellow, spraying with chemicals is carried out. Among the popular and effective: Mostilan, Iskra, Aktara, Karbofos, Leptocide, Creocide.

So that the onion does not turn yellow, you can prevent a lack of nitrogen in the soil by applying urea or ammonium nitrate. Grooves are dug between rows of onions and 6 grams of ammonium nitrate per 1 sq. m.

How to water the beds in order to effectively combat the yellowing of the 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, then you can feed it with complex fertilizer.

yellowed, drooping and dry onion feathers in the garden- a sad sight. It gives the impression that they tips as if scorched by the sun ... What is the matter and whether it is possible to save the crop - we will figure it out today.

Three causes of onion grief

global reasons, why do the tips of the leaves turn yellow and dry onions, three:

disease,
pest insects,
Lack of moisture and nutrients in the soil.

But this is all theory, but in practice it is worthwhile to understand in detail what the plant lacks or what prevents it from growing. First of all, conduct a thorough inspection of the pen and bulbs. Do not regret - pull one copy out of the ground.

In detail: why the onion dries and turns yellow

It happens that onions are overcome by diseases:

Bottom rot. The disease manifests itself during the mass ripening of the bulbs. The main symptom: the rapid death of the leaves, which begins with the drying of the top (tips). At the same time, in diseased plants, in addition, the roots rot.
False powdery mildew, or peronosporosis. About a month after planting, light green or yellowish blurry spots appear on leaves and flowers, covered with grayish-purple sporulation. Such plants stop growing, their leaves turn yellow and wither. Later, the spots increase, the leaves dry prematurely.
Rust on onion leaves manifests itself in the form of punctate yellowing, on the surface of which an orange coating forms. The spots then turn reddish-yellow. With a strong lesion, the leaves of bulbous crops dry out early.

As you can see, diseases in which the onion begins to dry and turn yellow have completely different symptoms. Take a closer look at planting onions in your beds. If you have identified the symptoms of Fusarium rot, peronosporosis or rust, you should immediately begin treating your "patient".

2.With the naked eye, you can determine the defeat of the onion insect pests. They love to feast on onions:

Onion fly. Bulbs damaged by its larvae become soft, rot, and the leaves of the affected plant dry and turn yellow.
Thrips tobacco is based on the leaves of plants, damaging them. These insects suck the juice from the leaves, resulting in yellowish-brown spots strewn with black excrement. With a high number of pests, onion feathers become chlorotic, turn yellow and dry out.
The onion secretive trunk gnaws passages in the tissues of the leaves, translucent through the skin. As a result, the leaves are twisted and dry.
Onion miner fly. These little flies feed on the juice of the leaves, eating out their flesh. Damage looks like elongated spots, and the leaves turn yellow, sluggish and finally dry out.

If during the inspection of the feather and bulbs you find signs of damage by any pest, it is clear here, What do we have to do: urgently start a fight until the insects have destroyed the entire crop.

3. And, finally, in hot, dry weather (no matter how much you water, everything is not enough for him), the tips of the onion feathers may begin to turn yellow and dry. The lack of nitrogen in the soil is also primarily reflected in onion leaves. So if you find that the pen is on onion beds turned yellow, and a thorough examination did not reveal signs of pests or diseases, it's about nutrition!

In adverse conditions, it is difficult for a young, actively growing onion to build up a green mass. But he can be helped, not only by watering, but also by feeding.

Onions turn yellow, how to water? Folk remedies

Until the onion begins to grow green mass, it will remain yellow, gloomy and small. Abundant watering and soil enrichment with nitrogen will help to cure the patient:

1. Yeast nutrition has a beneficial effect on many vegetables, flowers, fruit and berry crops. Likes yeast dressings and onions. Such top dressing improves the composition of the soil. Recipe: Dilute 10 g of dry yeast in 10 liters of warm water, add 2 tbsp. spoons of sugar. Insist 2 hours. Then the solution is diluted in 50 liters of water and the onion is watered if it has turned yellow. It is worth considering that yeast nutrition works only in warm soil, that is, in late spring or summer. Available and cheap.

2. Watering onions with ammonia: 3 tbsp. l. ammonia in 10 liters of water. The resulting solution is poured over the onion in the evening under the root. The easiest way to revive an onion is if the tips of its leaves turn yellow.

3. Watering with any nitrogen-containing fertilizer. Although not popular, but the easiest way to solve the problem: what to water the onion if it turns yellow Sources of nitrogen for plants: ammonium nitrate, urea, complex fertilizers.

What to do if the onion turned yellow in the garden? mini instruction

If the onion in the garden turned yellow, first of all, what needs to be done:

Pull out one copy and inspect carefully.
In case of detection of pests or diseases, we begin an immediate fight against them. More details about insecticides and means that can be sprayed onions in each individual case can be found in summer literature or the Internet. The topic is very broad. The reasons why the onion turns yellow and dries, we have examined in detail (see above).
Watering and fertilizing with folk remedies or nitrogen-containing fertilizers will help to fill the lack of nutrients in the soil.
For prevention purposes, it is important to follow the rules for growing onions and caring for them. On clean, well-groomed beds there is no place for pests and diseases. Often the source of infection is plant residues left on the beds after weeding or harvesting. Cleanliness is the key to health even for plants!