Harmful Insects for african violets: Root Aphids (Rhizoecus)


African Violet - Senpolia Colection

afida de radacinaRoot 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 prezentaouale paduchelui de radacina 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 larva paduchelui de radacina 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.


Comments to Harmful Insects for african violets: Root Aphids (Rhizoecus)

  • my name is Monica , and they are great loving flowers I received a Valentine from parma , after about a month until recently has gone well but for about two days , I noticed that the flowers are eaten , lies like a , just flowers , some leaves are scattered deposits of fine sand like a ( I sucked him off vacuum plant ) Next day , I noticed some white worms , cam de 5 mm , the flower stems , IAR and ghiveci you are not bilgarasi Albi 2-3 mm, last consistency , empty inside , I cleaned as much as I could what it's done to save the flower ?
    Thanks Monica 0729924673 Cluj

    Rahman Lal mahto 29 June, 2013 1:13 pm
  • Hi, Monica!
    Reading your post I think you're dealing with tripsul. The larvae of stage III and IV paraziteaza development typically on flower.
    The advice that I can give you is:
    1. Other Valentine flowers gut.
    2. Rupi all flower buds and flowers stiblele.
    3. Comb parasite with systemic isecticid. The best would be to use two of the same class and alternate them. I recommend Actara and Mospilan.
    First time doing a processing Actara (see how to prepare). After 10 days do a Mopsilan processing and 10 days after processing with Actara (or vice versa, You can start with Mopsilanul).
    Modul de Concentratia you prepare to solutiei or gasesti eg eticheta insecticidelor.
    At the same, in insecticide solution can add a little flea shampoo and pay attention to the temperature and do processing plant.
    Good luck!

    P.S. To keep the plant under control, are TRIPS to hibernate in the soil near the cold season. Many times we think we get rid of them, and they sleep just fine in pots.
    In case you is not, We are in full summer.

    Nina 29 June, 2013 4:33 pm

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