Many kinds of insects are endowed with a special protective organs.
Is no exception and is a dangerous pest for indoor plants is scale.
The name of the insect was due to the presence of wax-shield protects the adult and eggs from exposure to external factors.
This protective shell is quite «not on hand» growers to make pest immune to chemicals.
The only «plus» of the shield is formed gradually, as they grow older individuals, and can destroy pests at the early stages of that defeat, however, is not too easy.
The fact that «defenseless» the insect is difficult to detect with the naked eye, the body length of adult scale insects are about 2 mm. Body smooth, elongated oval or round shape.
Young individuals move rapidly through the plant looking for the most suitable place for sucking. Identification of the pest at this stage of «search» — will greatly facilitate the fight against it.
Finding the «tasty» place, scale insects proboscis is attached to the plant, feed on cell SAP and at the same time builds on a protective shell.
The size of the flap reaches a length of 0.5 cm so the adults are easy to detect on the plants they look like plaque.
Depending on the type of pest, the wax shield can be convex or non-convex, oval or round shape; color of different shades — from white to brown.
There are more than 2000 species of scale insects, the most common: oleander, ivy, Lavrov, pink, palm, cactus. The juice of plants suck only the larvae of the insect and females.
Males have underdeveloped mouthparts and throughout its short life (a few days), they feed on the reserves accumulated in the larval stage.
Males have wings, can fly from one plant to another, and the family move to the most favorable places of residence.
Adult females, conversely, remain stationary in one place for the entire life cycle, and it lasts up to several months. During this time, females lay huge numbers of eggs, which securely protects its shell.
Scale insects prefer plants with thickened succulent leathery leaves are arranged on the underside of leaves between the veins and on the stems. When a large number of insects is very tightly stuck to the shoots.
Often the pest affects citrus, ferns, ivy, asparagus, oleander, palm trees, crassula and cacti. In the process of life, the insect secretes a sticky liquid — span, also called honeydew.
Span is an ideal environment for fungal growth and fungal diseases. Especially quickly appears sooty fungus – clearly visible black patches on the plant. Pollen fungus clogs the pores and prevents the plant to breathe and disrupts the process of photosynthesis.
Affected plants, suffering simultaneously from insects, fungi, growth slows and weakens, gradually deformed, loses leaves and eventually dies. To fight the pest is very difficult, and if the larvae can be cleaned with an insecticide, then adults will have to remove manually.
To ensure that the plant is struck by a scale is easy enough to knock over the plate, and it is easy to separate from the body of the pest. For mechanical removal of pests, you can use a toothbrush, cotton swab or sponge. It is absolutely necessary to remove all insects, one or two undetected pest would negate the entire work.
A cotton swab dipped in a weak solution of vinegar or in 96% alcohol solution, and remove the adults and larvae. If there is no confidence in the successful result of this treatment (alcohol may cause burns from tender plants), you can use a neutral soap or foam soap-kerosene emulsion.
For the preparation of the emulsion 50 g grated Laundry soap, pour a liter of hot water, add 100 gr. kerosene and carefully to prevent the formation of homogeneous mass.
Immediately before use, the emulsion is diluted in 5 liters of water, the resulting solution treated plants, and after 10 minutes wash off with clean warm water.
Specialized chemicals that destroy what the scale no, to combat the pest, you should choose a systemic insecticide with broad spectrum of activity.
Quite effective: «Aktara», «Actellic», «Bancol», «Permethrin». Chemicals used in the morning or evening, dry and calm weather, outdoors or on the balcony.
In addition to the affected plants with systemic insecticide handled all nearby. Through the week there is re-processed.