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The gnat or soil fly


Who's the gnat ?

le moucheron bradysia The gnat is not a small fly (although it is also known as a "small of the earth"), nor a small fly fruit or vinegar fly , but a tiny insect flying in the order of a few millimetres that most often belongs to the Sciaridae family.
There are several genres that are quite difficult to differentiate one another. Species that cause the most damage in plantations belong to the genus Bradysia, Lycoriella and Sciara.
Although resembling mosquitoes, the gnat does not sting.


Reproduction of a gnat

The gnat only lives a few days, so it must quickly mate and lay its eggs.
The sheep looking for a bridge can come near you, but it's only your heat that attracts them. You can also find it on "poor" fruit or any organic decomposition material. What he mainly seeks is a good soil to lay his eggs there (the desiced blood used as fertilizer attracts the genus Bradysia).
These eggs will give birth to small white asticots that will feed organic matter present in the soil.
After a few weeks, larvae will nymphoser and turn into adults who will reproduce...
This cycle will last as long as temperatures are favourable, so you can be very quickly invaded.
The gnat is neither harmful nor useful. It is part of the food chain like many insects.


Is the gnat harmful ?

For horticulators, flyers can be considered as insect pests but in a dwelling it cannot be considered harmful (even if in some cases it can attack your plants in pots).
Normally, larvae only feed on earth. But if the soil of your plant is poor in organic matter, the plants are weakened, poorly maintained, or the larvae population is too important, the gnat larvae attacks the root scalp. It can also dig galleries in the main bulbs or stems.
In summary, we can therefore consider that the presence of flyers in a dwelling is more unpleasant than dangerous.


Preventive actions to limit the presence of the gnat

  • Avoid buying "vrac" soil that has not been disinfected prior to its marketing
  • Close the pot if you didn't use it completely.
  • Avoid using dried blood fertilizers.
  • Avoid planting near a waste bin containing organic waste.
  • Avoid the watering of your plants.
  • Avoid letting go of damaged fruit or other plants


How can we eliminate the gnat ?

It is not useful to use strong pesticides to destroy the gnat. These products will probably eliminate them, but they are not very healthy, neither for your health, nor for plants. Ours insecticide Ecodoo and flying insecticide Aries based on pyrethre are largely sufficient to kill adults.

And in the field of fumigation, fogger Habitat Biovétol will give excellent results on this type of insect. Insecticide based on plant-based assets (pyrethre + géraniol), intended for the background treatment of habitat. Very volatile, the solution is deposited in the smallest corners where pests and insects are located. Immediate action.

For larvae that may be found in the soil of your plants and that loves moisture, the simplest and most effective is to let the soil dry to the maximum until the plant shows signs of thirst. Repeat this operation several times, asticots should not be able to survive this lack of water very long.

Fogger Habitat with plant-based active...

This is fogger composed of plant-based assets is intended for the background treatment of the habitat in case of infestation by mites,...
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And if you have a horse, a pony, a donkey or even a cow, our insect repellent ALT'O ZINSECT (spray or gelwill be perfectly adapted to protect it from flyers that disturb them during the summer period. A 100% vegetable formulation combining 3 recognized and very effective active ingredients to keep these insects away from their daily life.