How to deal with carrot fly

 

To sow carrots is half the battle, you should still be able to grow root crops to Mature and not to lose the crop. Often crops besieging pest, the carrot fly. Knowledge of how to deal with it than treating carrots will protect from losses. The insect brings damage to many crops in the garden, the appearance in one place can infect other plants.

How to deal with carrot fly

Description and life cycle of the pest

Carrot fly can damage a significant portion of the crop. Every gardener needs to know, looks like a pest, what signs signal about the appearance. The insect also inhabits the parsnip, the celery, the parsley, at least – on the dill, the cumin, the Hemlock.

Size adult flies are 4-5 mm. Color greenish, the head is round, covered with setae rusty-yellowish. Around simple eyes on the crown visible black spot. Antennae with bright yellow fibers located under the outstanding forward of his forehead. Wings are broad, shiny, green color. Legs yellow, the front is slightly elongated.

The size of the larva is 5-7 mm in length. Color pale yellow, shiny. The front of the body with a sharp tip, rounded back with black stigmas. The larva forms a pupa (the puparium) oblong-oval, brownish in color. The first flies appear at a steady temperature of 15-17°C. depending on the region in late April or may. Around the same time cherry blossom, lilac, Apple, that will tell time to take preventive measures to deter insects.

How to deal with carrot fly

Causes of carrot fly

The pest is found everywhere, especially distributed in the European part of Russia and Siberia, prefers high humidity. Causes various illnesses and diseases of carrot and other crops. Main causes:

 

  • Failure to observe crop rotation. It is impossible to grow carrots and have similar diseases and pests several years in a row in one place. It is necessary to make a break for 3-4 years.
  • Violation of the balance of the carrot fly and its enemies-insects. The problem causes excessive and improper use of chemicals that kill natural enemies of flies.

 

Reproduction

Pests are divided into males and females. The period of mating and laying eggs takes 1-1. 5 months. The female lays embryos in the evening next to the carrot root or in the cervical spine. For the 1st time – up to 120 eggs.

Their development lasts 4-17 days, depending on weather conditions. For the year happens 2-3 generation.

The eggs hatch and the larvae settle in the roots, eaten it moves. The development of this form takes 20-25 days in the first generation, 40-50 days in the second. After completion of the process of formation they go into the ground to a depth of 4-10 cm Then pupation occurs. After the first development of the puparium of adult individuals appear, second and third generation overwinter in the soil.

How to deal with carrot fly

What harm does a carrot fly

Adults practically does not harm the plants. The main cause damage to the larvae. They feed on the roots, gnawing at them long moves. To eat this carrot undesirable, especially to leave for long-term storage.
If time does not take measures to eliminate carrot flies, most of the crop may be lost. The area is densely populated with pupae of the insect. Next year they will be much more.

Signs of damage by the pest

The fly has a small size, so it is difficult to notice. The presence of plants is found on the following signs of the emergence of flies:

 

  • The leaves become red, then purple. Subsequently turn yellow and die.
  • The roots have bumps and growths inside you can see the darkened passages. Then they can warp, crack, rot, exude an unpleasant odor.
  • The taste of the carrots becoming bitter, structure is hard.

 

How to deal with carrot fly

How to deal with carrot fly

You should prevent pest managed to lay eggs in the beds. After the larvae penetrate the roots, to destroy them is impossible.
The main control measures and prevention, only they can bring lasting results. After plant damage loss of at least a small part of the harvest is inevitable.

To get rid of the carrot flies had settled on the beds, apply:

 

  • agricultural activities;
  • insecticidal chemical and biological agents;
  • folk recipes.

 

Lasting results can be achieved by an integrated approach. Safe methods are suitable as a preventive and not bring result in the emergence of larvae of the pest on the roots. Insecticides can also be used strictly according to instructions, and for some time have treated plants impossible.

Farming methods

From carrot fly will help protect the smell of other plants that she can not stand. You can alternate rows of carrots and such crops as onions, marigolds, marigolds. It is important to observe the crop rotation and not plant the vegetable at one place the next 3-4 years.

Will help protection non-woven breathable material – used lutrasil, sandbag, you can use tulle. To arrange the planting need in open, Sunny spaces, as carrot fly prefers shade and high humidity. With the same purpose, used rare sowing, thinning.

Sowing should be as early as possible, productive winter method. It is desirable to use varieties of carrots that are resistant to damage caused by the pest. Also, be extremely careful watering, not too wet soil. Enough to irrigate once a week, but abundant. You should not feed carrots fresh manure.

Required in a timely manner to remove damaged, rotten plants periodically to mulch the aisles of dry peat.

Insecticidal preparations

Chemicals from carrot flies are the most effective. But because of the danger they pose to human health and animals, it is justified to use only in large areas or with heavy infestation of beds. Data methods of dealing with the fly is often used, when she laid eggs and hatched larvae. At this stage, other ways are useless.

You can use such chemicals as:

 

  • Arrivo;
  • Decis;
  • Actar;
  • Sherpa;
  • Initiative;
  • Zip.

The beds should be treated in the morning or evening in dry, calm weather. A tablet dissolved in water according to instructions, a weak solution will not bring the proper result, but the harmful effects will still render. A more concentrated solution may lead to poisoning by eating roots.

After treatment with chemicals carrot is a vegetable can be no earlier than a month. It’s safe for human health products. They are slower, but the fit at the initial stage of infection. A good result given Ectopic, Fitoverm, Cottager.

Folk remedies

These methods are effective against the adults, are mainly used as prevention. But the methods of dealing with folk remedies safe for humans and animals.
For example, in early June to water the plants with a solution of salt (1 tablespoon per 10 liters of water). After 10 days repeat the procedure. In the spring and early summer carrots in the garden to water with ammonia solution, the ammonia smell will scare away the pest, but also suitable as a nitrogenous fertilizer.

The infusion or decoction of onion peel is used for spraying young seedlings of carrots while the dry residue is routed between the rows. The same method is applied to tomato leaves, yarrow. Sprigs of wormwood can be decomposed into the aisles and infusion process aboveground part of the plant. Between the rows can be sprinkled with tobacco dust, mustard, black or red pepper. This prevents oviposition in the soil, but does not always work.

How to deal with carrot fly

Preventive measures

The surest way to protect carrots from carrot flies is to prevent its occurrence in the beds. The rules for farming, spraying, vegetable decoctions or infusions significantly reduce the risk of infection.

It is important to properly prepare the soil is to dig to a greater depth (25-30 cm), not breaking large clods of earth and not leveling the surface. In this case, the frost will destroy pupae flies. When planting alternate rows of repellent odor of the pest plants. Definitely thinning in 2 stages, timely tillage, destruction of weeds.

Will help protect the roots of the correct selection of the carrots. Varieties resistant to defeat the carrot fly, Perfekcja, Calgary F1, Vitamin 5, the Flakka. They contain large amounts of sugar that do not like insect. Also suitable variety, which have no strongly pronounced specific odor of the foliage.