In the spring, various pests of cultivated plants wake up, one of the insect pests is a carrot fly, which causes gardeners a lot of problems.
These flies appear at the time of flowering of apple and lilac, when the air has already warmed up enough.
Description of Carrot Flies
Carrot flies are small in size - no more than 5 mm. The body is black, shiny, has a slight greenish tint. Head, antennae and limbs are yellow.Carrot Fly (Chamaepsila rosae).
Larvae of a carrot fly have no limbs. The color of the larvae is light yellow. Body length does not exceed 7 millimeters. The front of the body is pointed.
Lifestyle carrot flies
Carrot flies prefer areas with high humidity, it is in such places that these pests do the most harm to carrots. When young carrot sprouts have a pair of full leaves, carrot flies begin to lay eggs.The larva of a carrot fly is white with an elongated torso.
Females lay eggs in the soil close to root crops. Flying flies and laying eggs lasts all summer. That is, carrot flies appear several generations in one season. One female is able to bring up to 120 eggs in one summer.
After about a month, the larvae pupate, and after 40 days young flies develop from them.
Colds do not frighten the larvae of carrot flies, since they tolerate wintering well. They hibernate in root crops or in the soil, and in the spring, adult individuals already appear.Larvae of carrot flies are resistant to cold.
The harmfulness of carrot flies
It is not the carrot flies themselves that harm root crops, but their larvae. They make winding long passages in carrots and feed on its flesh. As a result of such exposure, carrots become stiff, sometimes blacken and acquire a bitter aftertaste. The larvae of carrot flies make the root crop completely unsuitable for eating.Inside the root crop, the larvae make moves and feed on the pulp of carrots.
If carrot flies breed en masse, they are capable of causing enormous damage to the crop. In addition to carrots, the pest destroys other umbrella crops: dill, parsnip, fennel, celery. Among carrots, pests give particular preference to such varieties as Karotel, Nantes and Chanson.
The larvae of a carrot fly begin to eat carrots when its sprouts are still weak, because of this the shoots are significantly behind in growth, they have strong developmental abnormalities. It is possible to understand that the root crop is infected with a carrot fly by the color of the foliage, which first becomes violet-red, and then turns yellow and completely dries.Carrot flies are pests of the carrot crop.
When the carrots get a little stronger and the fruit appears, the larvae climb into the fruit itself and feed on the pulp of the carrot. Excrement and skins of larvae remain in carrots, which is why it acquires a bitter taste. And since the plant produces a protective reaction, its tissues are regenerated and become stiff.
As a result of the activity of the larvae of carrot flies, the fetus is deformed and can sometimes be divided into several parts. It is impossible to store such carrots, because it quickly rots.