Watering garlic and onions with salt water against diseases and pests

Watering garlic and onions with salt water against diseases and pests

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Watering garlic with salt is classified as a folk remedy for pest control. Basically, the measure is directed against onion flour - a dangerous parasite, the caterpillars of which can destroy the crop. The saline solution strengthens the immunity of the vegetable crop, the plants are stronger after watering, and the agent also enriches the soil with nitrogen.

Is it possible and why to water garlic and onions with salt water

Watering with a saline solution of onions and garlic is not a novelty for gardeners; the agent has been used on their plots for a long time, when there were no pesticides on the market. Garlic and onions are capable of accumulating harmful substances, and watering with a salt solution is safe.

The method has supporters and opponents, it is difficult to determine who is more difficult. Watering vegetables brings undeniable benefits due to the content of sodium chloride:

  • the saline solution has a detrimental effect on the nematode and onion fly caterpillars, which parasitize on the underground part of the culture;
  • increases the concentration of nitrogen in the ground, an important element in the growing season of onions and garlic;
  • the soil does not need additional processing and fertilization.

If the ratios and frequency of activities are not observed, watering with saline can cause significant harm:

  • along with the destruction of harmful insects, salt can scare away or destroy beneficial ones;
  • the composition of the soil changes, the internal ecosystem is disturbed, not only within the treated area;
  • it will not work to grow a good harvest of onions on saline soil, in this case it is recommended to replace the sod layer.

Before deciding whether to water with a salt solution or not, it is recommended to compare how much the benefit outweighs the harm.

When to water garlic with salt water

If the culture develops well, it has a sufficient number of feathers, the aboveground part is green, and not pale, then watering with salt water is irrelevant. If the plant looks weak, the feather is thin, the color is pale - this is a sign of a deficiency of nutrients, more often nitrogen, which is responsible for the growth of green mass.

It is possible to water the garlic or onion with a saline solution, but if there is no quick effect, it is better to feed the vegetable crop with urea.

If the onion stops growing, its tops turn yellow, feathers dry and droop - this is the first sign of pest damage

The initial symptoms appear in early May. At this time, the onion fly larvae are gaining activity.

If the season is rainy, the nematode can make itself felt at any time of the year. Therefore, in the case of garlic or onions, it is better to prevent the spread of the pest: to water the crop in the three-leaf stage.

Planting garlic, unlike onions, is carried out in the spring or before winter. The spring has a stronger immunity, so there are no problems with growing. Two waterings are enough for him: during the period of emergence of sprouts and after 20 days. Winter varieties require a more serious approach; before harvesting, they are treated with saline four times. The first procedure is carried out when the feathers reach 7 cm, the subsequent ones - with an interval of 3 weeks.

How to dilute salt for watering garlic

Watering garlic or onions with salt water is carried out with a solution prepared in accordance with the proportions. Excess sodium chloride is undesirable. The soil near the vegetables is not poured, but the green part of the plant is sprayed, you can use a watering can, but it is better to carry out the procedure with a spray bottle.

How much salt is needed for a bucket for watering garlic

It is necessary to make a saline solution for watering garlic or onions with a certain concentration. Approximate consumption - 5 liters (1/2 bucket) per 1 m2. The salt concentration depends on the processing time:

  • at the beginning of June, 100 g of salt is poured into about 3 liters of water with a temperature of + 500C. Stir until the crystals are completely dissolved. Then the liquid is poured into a bucket of cold water;
  • after 2 weeks, the process is repeated, only the salt is taken 300 g;
  • after another 14 days, watering is repeated with a more concentrated agent, which will require 400 g of salt.

In the case of a strong spread of pests, onions or garlic are treated with a shock dose, where 600 g of salt is poured onto a bucket of water.

How to properly water garlic and onions with salt water

The concentration of the solution and the frequency of watering garlic, onions with salt from diseases and pests depends on the purpose of the event and the degree of infection of the crop. The procedure can be therapeutic, prophylactic, or used as a top dressing for better vegetation.

Preventive treatment

Preventive measures begin with the processing of planting material. Garlic cloves are soaked in saline solution (250 g per 5 L of water). This event is also relevant for seed onions.

The planting material is in a saline solution for 1 hour, then it is taken out and dried

When the culture germinates, they observe the growing season, if there were cases of pest infestation on the site, preventive watering is carried out:

  1. Dissolve 250 g of salt in 10 liters of warm water.
  2. In the evening, sprinkle with feathers of garlic, onions and leave until morning.
  3. The next day, the plant is watered abundantly, covering the entire aerial part.

After the procedure, liquid organic matter can be added as fertilizer.

Top dressing garlic

Sodium chloride is rarely used to feed garlic or onions. Brine is more effective at controlling pests, but not as a fertilizer. The only advantage of salt is the replenishment of nitrogen reserves in the soil, but the introduction of urea is more effective and does not violate the composition of the soil.

Watering the spring variety is carried out twice, when sprouts appear, then after 21 days. The winter crops are additionally fed with saline again approximately in mid-July. I use salt water (100g per bucket). After processing, the remnants of the product from the green mass are washed off with clean water and the plant is watered abundantly.

Watering garlic with salt from onion flies and other pests

The danger of the onion fly is that it is quite difficult to detect the pest at the first stage. The insect larva hibernates in the soil and at the first warming rises to the surface for reproduction. Lays eggs in the root of garlic or onion; per season, the insect makes 3 clutches of 60 pcs.

An adult onion fly is not dangerous for a vegetable crop, the main harm from the parasite is observed in the caterpillar stage

With salt treatment, the female cannot get into the middle of the bulb, she has to lay clutches under the scales of the root tuber, where the larvae become vulnerable. Subsequent processing kills them, if manganese is added to the saline solution, then the pupae have little chance of survival.

Watering begins in May with a weak concentration of the agent. The initial interval between treatments is 3 weeks. If the problem persists, more salt is used, and the time between waterings is reduced to 14 days. More than four treatments are not carried out; during the last procedure, the largest amount of salt is used. In case of failure, chemicals are used.

Advantages and Disadvantages of Garlic Watering

Saline solution for watering onions and garlic can only be used in limited quantities and in low concentration. The effectiveness of the product is lower than that of chemicals.

Important! Sodium and chlorine do not destroy pests, but only block receptors, inhibit their development and reproduction.

Salt displaces adults from the treated area, but this applies only to the onion fly. It is almost impossible to destroy a nematoda with a folk remedy, but its appearance can be prevented.

If watering with salt is carried out as a top dressing, then vegetables are less likely to get sick, the bulbs are formed of a large size and the aboveground mass is thick with an intense green color.

Frequent watering with salt water disrupts nitrogen metabolism in the cells of garlic and onions, which leads to the accumulation of carcinogenic substances and ammonia in vegetables.

Sodium and chlorine are the main constituents of table salt. Even at low concentrations, they displace potassium from the soil, making it heavy with poor aeration. It will not work to grow a full-fledged crop on the site, the culture bulbs will be smaller. It is not possible to use a folk recipe on all soils, the agent increases acidity, after processing it is necessary to adjust the composition with ash.

Advice! To neutralize the harmful effect of sodium chloride, it is recommended to add organic matter to the treated area in the fall.


Watering garlic with salt is an effective but not always justified measure in pest control. If the plant develops normally, it looks healthy, there is no need to use a folk remedy. Frequent watering without observing the sodium chloride dosage can do more harm to soil composition than garlic or onions.

Watch the video: Onion Seeds Germination and Growth Time Lapse (February 2023).

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