Every year gardeners more often face invasion of caterpillars on hvoynik. Wreckers for few days eat around juicy needles, leaving branches almost naked. It is active pine sawfly. It began thicket to appear on garden sites because of the termination of mass processing of the woods.
As the pine sawfly looks
The wrecker belongs to group of Hymenoptera. He lives everywhere where coniferous trees grow. The pine especially suffers from activity of sawfly. He is considered the enemy No 1 of pine forests. The wrecker has received the name for the fact that during otkladka of eggs the female saws through hvoinka.
Adult individuals are externally similar to wasps. They do not pose threat for hvoynik and other trees as eat nectar. Harm to pine is done by larvae of pine sawfly. They black-green color are also similar on caterpillars. For this reason they are called sometimes lozhnogusenitsa. On body there are black specks over each leg. Length of caterpillars reaches 3 cm. They have synchronous movement. Caterpillars build slots and live in them the whole colonies.
There are several types of pine sawfly. Are most widespread ordinary and red. Externally they are in many respects similar. Distinctions are in coloring of trunk, but trees damage this two views equally. Methods of fight against them are identical too.
How to get rid of pine sawfly
During mass reproduction of branch of hvoynik are densely covered with larvae. On one needle about two sawflies can sit. After objedaniye the needles dry up, and then are twisted and turn yellow. As a result trees slow down growth, and at strong defeat can pognibnut at all.
Preventive measures in fight with pine sawflies are ineffective. It is important to perform regular inspection of hvoynik regarding presence of the wrecker in time to take measures.
At detection of sawfly begin with simple – try to collect caterpillars by hands. Yes, this occupation not from pleasant, but thereby you considerably facilitate tortures of tree. Put on gloves, otherwise caustic caterpillar secret can cause allergic reaction on skin. Destroy the wrecker mechanically or place him in bucket with salt water. After collecting caterpillars process trees such medicines of new generation as Bitoksibatsillin or Lepidotsid. They possess the frightening-off action.
If you do not want to apply chemistry, use folk remedies. Carry out spraying by garlic infusion. On liter of water take 4 heads, previously rasp, and leave for day. Filter, part in bucket of water and process the infected trees.
If you do not want to be too soft on the wrecker, use insecticides. In fight against pine sawfly Alatar, "Spark", Inta-Vir have well proved. After processing of its larva almost instantly cease to gnaw hvoinka, and on second day perish. Repeated spraying is carried out week later.
Integrated approach is most effective. At first collect caterpillars by hands, and then resort to chemical medicines.