Conifers, like all others, are susceptible to attack by pests. You can cope with them, knowing how they look, how they damage trees and shrubs, as well as means to combat parasites. In this article, we will consider the most common and dangerous forest pests that can cause significant harm to forests.
Bark beetles can be called the most dangerous forest pests. Most parasites live and develop under the bark of conifers, less often in the thickness of the bark or in the wood, making holes in them. Bark beetles are small, body length is from 0.8 to 12 mm, the color of pests is modest. At the end of the body is a flattened bevel that is bordered by teeth. This is a “car”, which serves to remove waste from gnawing moves.
By pumping the so-called uterine passage under the bark, the females lay their eggs. Hatched larvae, in turn, gnaw their own, larval, moves in different directions from it. At the end of the turn, they make a “cradle” camera in which they pupate. Young beetles hatching from pupae gnaw through flight holes through which they exit.
By pumping the so-called uterine passage under the bark, the females lay their eggs. Hatched larvae, in turn, gnaw their own, larval, moves in different directions from it. At the end of the turn, they make a “cradle” camera in which they pupate. Young beetles hatching from pupae gnaw through flight holes through which they exit. Mostly weakened, sick, drying trees are attacked. After settling with pests, they die.
Fighting bark beetles is quite difficult. Therefore, it is necessary first of all to carry out preventive measures that increase the overall resistance of conifers. In the fight against the pest, pheromone traps are used that are mounted on the affected tree. All beetles at a distance of 7 km flock to the smell. After this, plants with bark beetles are uprooted and burned. You can use ant pheromones that repel bugs. They are safe for animals and humans, unlike insecticides. Drugs that are used to combat bark beetles: ” BI-58 “, ” Wofatox .”
The spider mite is one of the most ubiquitous pests. It affects almost all types of plants, except aquatic. Ticks can be seen on larch, spruce, and juniper on the web. Ticks are active in spring and summer, during which they can appear several times.
The sizes of individuals directly depend on their fatness, the length of the females is 0.4-0.6 mm, of the males 0.3-0.45 mm. Soft-bodied animals are characterized by an ellipsoidal shape, the upper body is convex, and the lower is even. Tick larvae are transparent, color from light green to green-brown, on the sides there are 2 distinct, large dark spots. The color of females wintering from late summer to spring is from orange to bright red. All adult ticks have 8 legs.
The nutrition of spider mites is the content of plant cells. The presence of the pest is evidenced by a thin cobweb and the presence of small white dots on the needles. In the case of a severe defeat, it completely turns white, the whole plant is covered with cobwebs, a moving mass consisting of parasite bodies is visible on the needles.
The most effective way to get rid of a tick is to fight with modern chemicals. It should be noted that the spider mite is an arachnid, not an insect. It is useless to use insecticides against it. It is necessary to deal with it with other drugs – acaricides (” Nitrafen “, ” Double hit “, ” Drug 30-B “) and insectoacaricides (“Agravertin”, ” Fitoverm “, ” Akarin “, ” Actellik “). To destroy the most resistant individuals, it is necessary to process the selected drug several times.