Effective means of struggle from Medvedka: chemistry and ammonia

Medvedka is a malicious pest that lives in the earth and is distinguished by high fecundity. The female is able to lay up to 400 eggs at a time.

The population of the bear can cause very significant damage. most garden plants, flowers and their bulbs, strawberry bushes and strawberries.

She not only eats plants, but also cuts thin stalks of saplings with her claws.

In beds with only planted seeds, the pest breaks through numerous passages, preventing them from germinating. For a radical deliverance from the bears there is a large assortment of chemical insecticides that destroy both adults and their offspring.

We picked up list of the most effective and popular means of struggle with Medvedka, which are guaranteed to save your garden from adversity, without damaging the plants.

Ammonia

Many experienced gardeners are fighting with Medvedka using ammonia (ammonia water). In addition, ammonia is an excellent nitrogenous fertilizer.

Release form

Aqueous solution in plastic or glass vials.

Chemical composition

Ammonium hydroxide - 30% concentration.

Mechanism of action

Ammonia is a remedy for medvedka, which has a sharp unpleasant smell, and this repels harmful insects.

Duration of action

Very short, the smell quickly disappears. Therefore, the introduction is necessary at least once a week.

Compatibility with other drugs

Ammonia against the bear should not be combined with lures, which attract the bear by its smell.

When to apply?

In any period of vegetation during watering.

Mode of application

Put 3-4 dessert spoons of ammonia water into a bucket of water, stir well and water the plants under the root.

Toxicity

The drug is very toxic to humans and all warm-blooded animals - hazard class 2.

Terradoks

This remedy is against a medvedka of a very wide range of effects on the majority of pests in the soil.

Reliable and proven drug, guaranteed to destroy the bear.

Release form

The granules placed in a waterproof package. Packaging 100g.

Chemical composition

The main substance is diazinon at a concentration of 40g / l.

Mechanism of action

Neurotoxic properties lead to paralysis of the extremities of the bear. This is due to blocking of the cholinesterase enzyme.involved in the transmission of impulses of the nervous system.

The enzyme should cause the hydrolysis of free acetylcholine, which instead begins to accumulate in the synaptic opening, interfering with the passage of pulses.

Ways to enter the body - intestinal, systemic and contact. If you constantly use this drug, you can get a bear, developed resistance to its effects.


Duration of action

The period of protection of plants from the bear lasts for at least 13-15 days. At this time, diazinon gradually enters the plant through the root system.

Compatibility with other drugs

Diazinon goes well with herbicides and fungicides. Water emulsion is actively used in tank mixtures.

When to apply?

It is preferable to make an insecticide before the rain. Other weather conditions do not play a special role.. Granules are introduced when planting plants and then during any growing season.

The exception is strawberries and strawberries - the preparation for its protection is laid in the soil after harvest.

Mode of application

Terradox granules are designed to be applied to the soil. Directly in the garden beds or between the rows they pitch or grooves with a depth of 2-4cm, in which insecticidal granules are placeds.

10-25 g of the drug are consumed per 10 square meters. For the season, you can make 2 treatments with a break of 2 months.

Toxicity

Terradox is ranked as class 3 hazard, as a drug that has low toxicity to animals, bees and people.

Vofatoks

Combined insectoacaricide used for the destruction of pests in the earth. It has a very wide range of effects.

Release form

Wetting powder, packed in bottles of 100 and 20 ml and 5 ml ampoules.

Chemical composition

bifenthrin 100 g / l
Imidacloprid 100 g / l

Mechanism of action

Bifenthrin, like other pyrethroids, disrupts the exchange of sodium and calcium. Imidacloprid slows the opening of sodium channels and inhibits the activity of enzymes involved in the transmission of impulses along the nerves.

Thus, the normal functioning of the nervous system is disrupted immediately from two sides. Insect, there is a strong overstimulation, convulsions and convulsions, turning into paralysis and, as a result, death.

The drug is systemic, enter the body through contact and intestinal paths. The likelihood of developing resistance is very small.

Duration of action

Activity is guaranteed to last for 15-18 days. Full disintegration of means occurs after 45 days.

Compatibility with other drugs

Combined with fungicidal substances.

When to apply?

Climatic conditions do not affect the effectiveness of the drug. Use of a means after a rain is welcomed.

How to make bait?

The basis is boiled grits - pearl barley, pea, corn, millet. Porridge should be crumbly and well cooked.

Vofatoks (20 ml) is poured with a small amount of water (100 ml) and stir until the powder is completely dissolved. The solution is filled with 1 kg of porridge and mix well. For half an hour the mixture is left alone to make it true.

Immediately before use, the refined vegetable oil is added to the bait in an amount of 40-50 ml and mixed again. You can store the mixture in a cold place for no more than 3 days.

Mode of application

The prepared bait is laid out around the planted seedlings on the moist soil and covered with a small layer of soil in order not to attract the birds.

Toxicity

The drug is very toxic for rats and mice, moderately for birds and not enough for humans - 3 class of danger.

Rembek

An effective remedy for Medvedka, a unique environmentally safe drug that does not contain toxic chemicals. It is used to combat the medvedka and garden ants.

Release form

Green colored croup. Packed in waterproof packages with capacities of 100 and 200 g.

Chemical composition

  • Boric acid;
  • Kerosene;
  • Krupa;
  • Sugar;
  • Sunflower oil;

Mechanism of action

Boric acid, after entering the digestive system, destroys the intestinal wall and water balance, causing dehydration. Kerosene inhibits respiratory function.

Duration of action

The drug works within 10-14 days.

Compatibility with other drugs

Remarkably combined with most well-known drugs.

When to apply?

The first treatment should be started before planting and sowing seeds in the beds. Repeated - as needed, but especially during the breeding of the bear. Weather conditions are not important.

Mode of application

The drug is laid out on the already dug-out moves of a Medvedka or prepare grooves and pits in the beds, holes and inter-rows. Recommended amount - 3-4g (1/2 teaspoon) every half meter area. Sealing depth - 2-4 cm.

Toxicity

Rembek is ranked as the 3rd class of danger to people and animals - moderate toxic ability.

Hacks

Effective bright colored granular insecticide, intended for the destruction of pests living in the soil. These include Medvedki, larvae of Khrushchev, wireworms.

Release form

This medication from the bear - granules of red and green, placed in waterproof bags. Weight - 100 g

Chemical composition

The main substance is Malathion 50 g / kg.

Mechanism of action
Once in the body of an insect, Malathion is transformed into a physiologically active substance with a very high toxic ability.

With frequent use of funds insects begin to develop malathion resistance. The body of such pests produces the ability to destroy the chemical, turning it into a non-toxic compound.

Duration of action

Death occurs after 3 hours after ingestion of the drug into the body of a bear. The duration of the poisoning activity is up to 20 days after placement in the ground.

Compatibility with other drugs

Malathion, among other organophosphorus compounds, is perfectly combined with most of the known insecticides and fungicides.

When to apply?

The first laying of the granules produced for 8-10 days before planting and sowing seeds in a moist soil. It is advisable to carry out the procedure after the rain or shortly before it starts.

Mode of application

The poison from the bear is laid in the grooves or pits up to 5 cm deep, placing Cuts in the places most frequented by the Medvedka - heaps of manure and compost, beds and holes, aisles, tree trunks. From above the granules are covered with earth. Consumption rate - 6-10g every half meter.

Toxicity

Cuts refers to moderately toxic agents belongs to the 3rd class of danger to people, mammals and birds.

Alternative method

Not so long ago, inquisitive gardeners discovered that Regent, who designed to destroy the Colorado beetlesIt is also effective against the bear.

Bait is made from boiled cereals (1-1, kg), which is saturated with the contents of one packet of the Regent. 3-4 spoons of sunflower oil are added to the mixture, all this is thoroughly mixed and laid out on the beds, lightly powdered with soil.

Watch the video: Ammonia. Ammonia ICSE 10 CHEMISTRY. Preparation and Properties of Ammonia. 10 ICSE. (December 2024).