Root aphids or root lice (Rhizoecus) Faculty say the family Pseudococcidae. This sugeraza as root aphids and woolly lice are close relatives, just as in the evolutionary process of root aphids switched to an underground life.
We know about 130 species of root aphids, But their number is increasing. In the viewfinder scientists arrived species attacked soiurile agricultural plant May valoroase other decorative cele.
Amatorii of decorative plants tesuturi ass pretty tasty if you pot intalni ass afidele of radacina comune (Rhizoecus falcifer Kunckel, cooking are attacked and Rhizoecus cacticans, ying Aloia Rhizoecus of aloes. Violetele African sunt atacate of obicei of afidele of radacina oarbe (Rhizoecus dianthi) yes afidele of American radacina (Rhizoecus americanus).
Radacina of this aphid insect polifaga. Acesti paraziti Pref substraturile sun uscate it afanate.
Primrose if principalul indiciu Care semnaleaza prezenta afidelor radacina of the African violetele this sedimentul of culoare alb-albastrui pe radacinile planted. Radacinile sparing presarate sunt cu sau cenusa sunt cu acoperite mucegai. Often we find this mold in the form of bulgarasi on the side edges of the soil in the pot.
Flower will rise gently from the pot and if you see white spores violet is blue when infected. The attack is during the growing season, from spring to autumn.
Root aphids are more sensitive than woolly lice and can not be observatecu eye. 1-2 mm in length. They have three pairs of legs and moving easily, females less. Adult females and larvae attack the roots of the plant, most of the aphids found in soil substrate root region. Only few of them stood on the root 5-10 mm above the ground level of the pot. This portion of the root is usually covered with a "fluff" whitish "which represents root lice secretions.
Females have round or cylindrical body shape, white or yellow. Larval body is covered with a glossy coat similar to the wax. The females lay their eggs and are inactive in a ' special ' rooms made up of fibrous sediment. These rooms are found on the edges of the pot soil, in voids in the soil around the roots or. A brief inspection of the soil, These camarute can be easily confused with mold.
The larvae that hatch from eggs moves through the soil at the end of roots to feed itself. It moves with ease and can immigrate and in nearby ghivecile.
Males have a pair of wings color, well formed. Adult males do not feed and their life expectancy is very short. In several generations in a year males can not miss.
Root aphid is one of the dreaded pests of African violets. Attacked plants grow slowly. Leaves are lifeless. As the root is attacked, plant loses its turgor and yellows.
Root aphid feeds on the roots of the plant cell juice, while root tissues that secrete substances that alter plant metabolism. Root aphid droppings are ideal food for saprophytic fungi. The plant dies due to multiple injuries at the level of the root system and fungal and bacterial infections.
In combating the root paduchelui it is important that the diseased plants to separate healthy ones. The immune system of the plants to be strengthened with different substances, as well as those of algae.
Combating lice efficiency of insecticides is done using neonicotinoide. Insecticide comes into the plant and circulates with the SAP of the plant through the whole plant. Most indicated are Actara, Mospilan, Dantop. It is enough that the soil in pots should be soaked with a solution of one of these insecticides.
It is recommended to not more than 3 chemical treatments with an interval of 7-10 days.
Unfortunately , There are lice resistant root Actara. If Actara concentration of 1 g/1-2 water it will not take effect will change the insecticide.