Fungicide, insecticide and acaricide - what kind of drugs and how to apply them correctly

In order for the use of pesticides to bring maximum benefit, during the season you need to use drugs from different chemical classes. Then pathogens and insects will not be able to adapt to the poison.

Chemicals, widely used in gardening, depending on the principle of action can be divided into classes. Let's see what it means, and what drugs belong to which class.


These drugs are designed to destroy parasitic fungi. Fungicides save plants from powdery mildew, downy powdery mildew, various rot, blotches and other diseases.

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    From the article you will learn why plants need to be treated with fungicides and how to use them properly.


These are long-lasting, systemic (penetrate into the plant) and broad-spectrum drugs. The active ingredients in their composition can move beyond the point of plant growth and protect young growths from fungi. Triazoles are quickly absorbed by the leaves and are recommended against powdery mildew, rot, rust, scab, septoria, oidium. But for the treatment of fusarium they are ineffective.

A drugActive substance
Is fastdifenoconazole
Shavittriadimenol, folpet


Fungicides of this class inhibit the process of nuclear division in fungal cells. Active substances are well absorbed by plants through the roots and spread upwards through the vascular system. The preparations are used during the irrigation of the soil, as well as for seed dressing.

According to experienced gardeners, benzimidazoles are the best fungicides to combat root rot of plants. In addition, only these drugs are able to effectively deal with fusarium.

A drugActive substance
Topsin-Mthiophanate methyl

Of all benzimidazoles, thiabendazole lasts longer than the others in the soil - from 500 to 724 days. And, for example, carbendazim decomposes much faster - from 20 to 40 days.


The drugs have a systemic and immunostimulating effect. Their active ingredients are resistant to temperature extremes, able to move beyond the point of plant growth and provide protection for young shoots. The strobilurins are used against powdery mildew, rot, rust, scab, peronosporoza, late blight, mildew and leaf spots. Ineffective for the treatment of fusarium.

A drugActive substance
Convertible TopPiaklostrobin


This is a fairly new class of fungicides that have a systemic and protective effect. They are designed primarily to combat sulfur and monilial rot, powdery mildew.

The active ingredient is fenhexamide, the most popular drug of this class is Teldor. It is not phytotoxic, not dangerous for humans and the environment, ideal for processing flowers.


Carbamates also have a systemic effect: they penetrate through the roots and spread through the vessels of the whole plant. But they are used only for the prevention of fungal diseases, since they cannot cure infected specimens.

The most famous drug of this class is Previcur. The active ingredient is propamocarb.

Piperazine derivatives

Provide a protective and therapeutic effect. Only effective against powdery mildew, gray mold, scab and oidium. Active ingredient - triforin. The chemical drug is called Saprol.


They have a systemic or limited systemic effect. The drugs are used in the fight against scab, powdery mildew and moniliozom. Gardeners and gardeners most often use the drug Chorus (active ingredient - cyprodinil).


These drugs deal only with diseases that are easily treatable. For example, with powdery mildew. In other cases, imidazoles are effective only for prevention. The most popular drug is Spartak (the active ingredient is prochloraz).


These fungicides have limited contact action. They are effective only for intermediate, final and prophylactic treatments.

A drugActive substance
Polycarbacinpolisher, metiram
Ditan M-45, Acrobat MCmancozeb, dimethomorph
Ridomil Goldmancozeb, metalaxyl

Acetamides and oxazolidine derivatives

Effective against late blight, Alternaria and mildew. Usually use the combined drug Thanos. The active ingredients are cymoxanil and famoxadone.

Copper-Based Drugs

There are many copper-containing fungicides, but copper sulfate and Oxyh are most often used. They have a limited contact action, they are used for the prevention and treatment of superficial fungal diseases. But keep in mind: copper-based drugs are phytotoxic.

There are other classes of fungicides, but in gardening, these drugs are almost never used.


The word "insecticide" is derived from the Latin words insectum - "insect" and caedo - "I kill." These chemicals are designed to destroy harmful insects (aphids, scutes, whitefly, weevil, sawflies, etc.). Insecticides also differ in chemical composition and action.


These drugs are characterized by fast and continuous action, high efficiency and low toxicity for humans and animals. However, insects quickly get used to them and do not die with repeated treatments.

A drugActive substance
Tsimbush, Arrivo, Sherpa, Inta-Vircypermethrin
Fustak, Furyzeta cypermethrin
Decisdelta metrin
Karatelambda cyhalothrin
Kinmiksbeta cypermethrin

Organophosphate Insecticides

These systemic drugs have a wide spectrum of action, but they are very toxic to humans and animals.

A drugActive substance
Fufanon, Aliot, KarbofosMalaton (Malathion)
Diazol, Grizzly, Basudin, 2-Thunder, Medvedoxdiazinon


These drugs affect the nervous system of insects and are almost non-toxic to humans. They are used for root and foliar treatments.

A drugActive substance
Aktara, Kruiserthiamethoxam
Konfidor Extra, Imidor, Commander, Tanrek, Antizhuk, Varantimidacloprid

Hormonal insecticides

Safe for animals, people and the environment. These drugs act on the physiological processes of insects. They do not kill adults, but sterilize them.

A drugActive substance


These drugs have a wide spectrum of action, are practically non-toxic to humans, and insects do not get used to them. As shown, avermectins are excellent help in the fight against ticks.

A drugActive substance
Akarin, Agravertinavertin


Acaricides are specialized tick control agents. The contact principle of action of all acaricidal preparations is due to the peculiarities of the vital activity of these arthropod insects.

Among acaricides, there are so-called insectoacaricides - drugs that work as insecticides. Most of them form a class of avermectins. Some acaricides act on ticks only at a certain stage of their development, while others - at all stages.

Currently, in the processing of the garden and the flower bed the following drugs have proven themselves best:

  • Omite. Active ingredient - propargite. Kills adult ticks, their larvae and nymphs. Does not destroy eggs. The protective effect lasts at least 21 days.
  • Flower. The active ingredient is diflovidazin. Low-toxic hormonal acaricide, which acts throughout the life cycle of ticks.
  • Apollo. Active ingredient - clofentezin. The drug is effective in combating many types of spider mites, especially with red fruit mites. Valid for at least one month.
  • Borneo. The active substance is etoxazole. Hormonal acaricide from eggs and larvae. With a large accumulation of adults, it is better to use it together with drugs that destroy adult ticks.

These preparations help protect garden and flower crops from ticks. And if you want to process the entire area to fight these insidious insects, read our article We treat the dacha from ticks. It explains in detail how to do it correctly.

To protect plants from fungal diseases and insect pests as effectively as possible, use treatments from different classes during treatments.

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