General information

How to deal with a carrot fly


Flying pests and their larvae from year to year cause significant damage to the crop. Fortunately, there are many methods of dealing with carrot flies, namely: chemicals, folk methods that help to preserve garden crops. The most dangerous pest for carrot beds is the carrot fly and the larvae, which it lays. It is extremely important to detect and exterminate the insect in time, because the consequences may be irreversible and the harvest will no longer be saved.

What does a pest and life cycle description look like?

From other pests carrot fly can be distinguished by a number of external signs:

  • a small, brilliantly dark belly, 4-5 mm long, covered over the whole area with a whitish, barely noticeable down,
  • the head of the insect is colored red-yellow, the paws and tentacles also have a yellow color,
  • fluffy antennae,
  • long transparent wings with brown streaks.

The first invasion of carrot flies begins in early March. During this period, they actively multiply and lay their eggs near the still young carrot sprouts. The larvae that have emerged into the world are actively moving to the root of the plant and begin to feed on it, receiving food for the entire period of maturation.

The larva hatched from the egg is an oblong body 5 mm long, yellow-white in color, without limbs and head. At one end are two shoots of brown color.

After a couple of weeks, the matured larva is selected on the soil, where it turns into a pupa, and then into a full-fledged carrot fly, which is capable of producing new offspring. The second arrival of the flies begins in the autumn and the new generation of pests goes through the same life cycle.

What harm can a carrot fly do?

Winged adults of the pest feed exclusively on carrot juice. Such food almost does not affect the appearance of the fruit, which can not be said about the taste.

After a raid of carrot flies, the carrot becomes bitter and begins to smell like rot.

But the little larvae hatching from eggs carry a much greater threat and can completely destroy the entire seasonal crop. The larvae feed on the fresh flesh of the young carrots and in the process of feeding gnaw through small tunnels and pits in the root crop. Thereby bringing bacteria and germs into it, causing the carrot to rot and die.

The main signs of root infestation are:

  1. The color of the fruit changes to dark red, and then acquires purple hues.
  2. The upper grassy part dries out ahead of time.
  3. The land around the carrot is permeated with small grooves.
  4. Carrot root begins to rot.
  5. The taste of the fruit is unnaturally bitter and has an unpleasant smell.

According to the above characteristics, any gardener can determine that his garden has become a “dining table” for the larvae of the carrot fly and herself. And with this you need to quickly finish, the fight with the carrot fly in the garden should be immediate.

Pest Control

Fortunately for gardeners, there are a huge number of methods to protect carrots from carrot flies and to destroy this pest, namely, simple preventive measures, crop rotation, agricultural machinery, folk methods and chemical additives.

Preventive measures

The fight against carrot fly in the garden begins with simple preventive measures that will help to avoid problems with insects in the future:

  1. First you need to find a good place for planting carrots. The plant must freely get the heat of the sun and blown by the wind so as not to form a wet zone, which attracts flies.
  2. Between the beds, the distance should be at least 20-25 cm.
  3. Seeds for planting need to be treated with special means from carrot flies, which in the future will scare away insects and other pests.
  4. A great carrot parasite repeller is a common bow, or rather its smell. Plant onions next to the carrots, and the problem will disappear by itself.
  5. Do not fertilize carrots with fresh manure.
  6. Before sowing seeds, use a special fertilizer that accelerates growth. Then mix the seeds with river sand and start sowing.
  7. Planting begin in the spring, preferably in the first 2 weeks of March.
  8. Loosen the soil as often as possible and get rid of plants that are starting to rot. In this way you get rid of pest eggs.
  9. Mulch the ground between the beds of dried peat (150 g per 1 m).

If the invasion of carrot flies in the fall, you can fight it all in the same way as in the spring.

Carrot fly is very sensitive to strong odors, therefore, the appearance of larvae can be prevented with ammonia. To do this, dissolve sal ammoniac with water and treat the beds with a plant. Ammonia is completely harmless to carrots, as it evaporates instantly.

Carrots - a favorite product of almost all people on earth. It brings great benefits to the human body. But to grow it is not so easy, because the inhabitant of this tasty vegetable eats it before the person. Fortunately, there are many ways to get rid of this type and methods of preserving the fetus intact, which are described in this article.

Carrot fly: what a pest looks like

Information about how a carrot fly looks is the first step towards ensuring the safety of your site.

The body length of this pest is only 4.5 mm. It is shiny, black, has a gentle, whitish down. The head is red-yellow in color, and the legs and tentacles are yellow. Transparent wings, on which brownish-yellow veins are visible, are longer than the belly and lie horizontally. Carrot fly lays milky-white, oval eggs.

The larva of the pest reaches 5 mm in length. It is brilliant, pale yellow. Legs and head on a worm-like, round, front tapering body are absent. The posterior end is rounded and there are two short, black processes with spiracles.

This is the form of carrot flies, which causes the greatest damage to both your carrot and other garden crops, which means that you will have to fight with it. In the pupal phase, the insect is light brown and has an outer segmentation.

Features of the life cycle of carrot flies

The first years of this fly are in early spring, and at the end of May and for 50 days it lays eggs at the root neck of plants.

After 5-7 days after laying, the larvae are planted in the roots, and after three weeks of growth, they leave the plants and move to the ground, where they pupate.

Under favorable conditions, the second generation of carrot flies will appear in July, the cycle will be repeated, and each of them (if not securing the site) will have to somehow be fought.

In the autumn, individuals that have pupated in time overwinter in the ground, while the rest, along with the root crops, enter the storage and feed on the sap of vegetables there, continuing to damage them.

Signs of a carrot fly in the area

As soon as you notice that carrots or other root vegetables (parsnips, celery, parsley) acquired a violet-red hue and become deformed, and this is all accompanied by the appearance of an unpleasant smell and taste, especially if the tops are drying and turning yellow (the root neck can also have many moves) - Start to fight with a carrot fly, because judging by the signs, this particular pest has settled on your garden bed.

How to deal with carrot fly in the garden

This insect, unfortunately, is not destroyed as easily as we would like. But no matter how unpleasant and insidious the pest is a carrot fly, it can also be successfully fought with it. Three methods are common: agrotechnical, chemical and folk. Each method has its own advantages and disadvantages.

Agrotechnical method

The complex of agrotechnical measures will serve as an excellent protection of carrots from carrot flies. It includes the following actions:

  • Do not use fresh manure to fertilize the beds. After making organic matter in the ground, you must wait a year before sowing carrots in this place.
  • Cover the bed with some covering material (agril, lutrasil, spunbond, etc.).
  • Use factors that are unattractive for carrot flies, for example, she does not like the smell of onions, because plant next to this culture.
  • Periodically loosen the aisles, without exposing the roots.
  • Water plants rarely and moderately, regularly removing weeds. Spend a thorough weeding no later than the plants will have 2 true leaves.
  • These pests are attracted by carrot smell, therefore, performing weeding and thinning, do not leave weeded plants in between rows.
  • Remove wild umbrella crops from the site.
  • As a protection against carrot flies, crop rotation is also used, sowing carrots at a distance of 500-1000 m from the previous place of growth and returning to the previous one only after 2-3 years, since the fly is not able to overcome this distance, this will help to get rid of it.
  • Sow root crops initially not densely (the shaded areas will become the source of insects) and in time to thin out and mulch with peat.
  • Autumn deep digging, turning over large layers of soil. Due to this, during the winter the insects will freeze out.

Use of chemicals

With a frequency of infection above 1 larva per 20 plants, it is recommended to use carrot fly chemicals. This refers to various insecticides. They are mainly used during the mass summer pests. When processing, be sure to follow the safety rules and adhere to the dosage indicated in the instructions or on the packaging.

Be sure to handle not only the planting of root crops, but also the weeds nearby. A single use of such funds is usually sufficient. Before sowing, it is necessary to treat carrot seeds with soil rot agents that can be effective against carrot flies.

Folk methods of dealing with carrot fly

Popular methods are also considered effective. There are many of them, but we will now describe only a few.

  • During the laying of eggs, treat the rows between plants with mustard powder, tobacco dust, black or red ground pepper.
  • The fight against carrot fly in the summer is also possible folk remedies. Suitable spraying onion or garlic tinctures. To prepare, take 300 g of onion / garlic, finely chop, pour 2 liters of boiling water and leave for a day, then add to the concentrate 10 liters of water and 30 ml of liquid soap.
  • Helps and decoction of the tops of tomatoes. For him you will need to grind 4 kg of such tops and pour 10 liters of water. Boil for half an hour and infuse for 4-5 hours. Strain and add 50 ml of liquid laundry soap. Dilute every 3-5 liters of the resulting infusion with 10 liters of water.
  • A good remedy for carrot flies is also considered an infusion of wormwood. To make it, chop fresh wormwood and tune it with 10 liters of boiling water, let it infuse, then strain and divide into 3 parts. To each part, add 8 liters of water and water the beds. The remains of wormwood can lay out between the rows. After this treatment, the flies will not appear for about 4 weeks.
Spraying and watering is 3 times in the morning or evening.