Integrated methods of forest protection (1988)

Summer.

It is raining in the forest.

Winter forest.

A stream flows through the forest.

The shore of a forest lake.

Birch grove.

Tourists in the forest on the shore of the lake.

Children are walking in a clearing.

A bumblebee on a flower.

Children are watching a caterpillar.

Caterpillars eat tree leaves.

Scientists are watching forest pests in the forest.

They have found caterpillars under the bark of a tree.

A caterpillar on a person’s palm.

A tractor is raking the earth.

A dam.

A plant.

An airplane is flying to treat the forest with pesticides.

Trees damaged by pests.

Rain in the forest.

Water flows along the ground.

Panorama of the lake.

Tourists are resting in a clearing.

Sunlight penetrates through the crowns of trees.

Forest flowers.

A spider wraps a beetle in a web.

Ants.

An anthill.

Sanitary felling of the forest.

Clearing the forest.

A forester examines young pine trees eaten by elks.

Cows in a clearing in the forest.

Excessive grazing of animals harms the forest.

Such grazing results in outbreaks of pests for the forest.

Caterpillars on tree branches.

Employees of the forest protection station determine the dangers threatening the forest.

The station's laboratory.

It determines which biological preparations to use to protect the forest.

Preference is given to a viral preparation that lasts up to 10 years.

The preparation is loaded into helicopter tanks.

Large areas are processed using aviation.

Spraying with dendrobutilin is underway.

Biological preparations act selectively.

Only the enemies of the forest die, and its useful inhabitants do not suffer.

Useful caterpillars live, and harmful ones die.

Forest glade.

Foresters are helped by natural enemies of forest pests, entomophages.

Some of them need to be fed with nectar.

Experienced foresters solve many issues of pest control by attracting them with the help of honey plants.

The American white butterfly pest.

Trapping belts are fixed on trees, on which the pest caterpillars gather for pupation.

The butterfly pupae are placed in special separators with holes and installed in the forest.

Entomophages freely pass through the holes, infect the pupae, and the butterflies die.

The installation of a belt and a separator on a tree is demonstrated.

Foresters are starting to use pheromones to combat pests.

The preparations are placed in traps that are coated with glue inside.

Such traps are especially effective at height.

Foresters of the Chelyabinsk Forest Protection Station install traps in the crowns of trees.

Alternation of forest, tree and plant species.

Ants.

Birch bark.

Ants increase soil fertility, and grass, shrubs and trees grow better.

In forests poor in ants, colonies are introduced from large anthills.

A quarter of the nesting material is taken.

It is better to create a new nest on an old stump.

After transplantation, the nest is covered with old leaves and fenced in.

This is how ant colonization centers are artificially created.

Motorcyclists destroy an anthill.

The sun over the lake.

Sunset.

The sun's path is reflected on the water.

Views of nature.

Bird on a tree branch.

Birdhouse.

Birds are necessary for the health of the forest.

In central Russia, birds and their chicks eat up to five thousand insects per hectare per day.

Man-made nests on trees.

A planted forest has grown.

Artificial forests are usually represented by a monoculture, in which the natural balance is disturbed.

Caterpillars on pine needles.

A site for the implementation of a comprehensive focal forest protection method.

Drawbars are created on the site.

A tractor plows the site.

A drawbar fence.

Foresters generously fertilize the soil.

They sow nectar plants.

The purpose of the drawbar is to improve the life of forest inhabitants that are useful to them.

Bushes that produce a bountiful harvest of berries are planted here.

Honey plants are sown to feed entomophages.

Bird drinkers are installed.

If there are no anthills, they must be replanted.

A shelter for wild wasps.

Stones are installed to attract lizards and other useful animals.

A lizard can be seen on such a stone.

A dragonfly on a flower.

A frog on a branch.

A bird.

A fox.

A forester near new plantings.

Forest thickets.

One drawbar of 0.1 hectares can protect about 25 hectares of forest.

Fern thickets.

Tourists are walking along a path.

A lake.