What are the 3 parts of pesticides? What are the pesticide ingredients?

Pesticide names usually consist of three parts. That is, the content of the active ingredient of the pesticide, which is usually indicated by ""; The second part is the name of the drug, such as dichlorvos.

The third part is the processed dosage form. Such as 40% oxidized dimethoate.

Emulsifiable concentrate, 40% is the content of pesticide active ingredients, dimethoate is the name of the medicine, and emulsifiable concentrate is the processed dosage form.

The common characteristics of the chemical structure of 3azole fungicides are that the backbone contains hydroxyl (ketone group), substituted phenyl group and 1,2,4-3 azole group compounds. In addition to being inactive against oomycetes in the subphylum Flagellella, this kind of agent is active against pathogenic bacteria of the subphylum Ascomycetes, Basidiomycetes and Semi-Knowers, and its mechanism of action is to affect sterol biosynthesis and destroy the cell membrane function of the cell. Years of use have shown that no pathogenic bacteria have been found to be resistant.

In the 70s of the 20th century, it entered the pesticide market represented by 3 azolone, and showed the development prospect of 3 azole pesticides with its excellent efficacy. 3. In addition to the antibacterial effect, azole pesticides also have physiological effects on plants, change the binding group, and obtain insecticidal and herbicidal activities. This class of fungicides is widely used, and the mode of action is different from that of previous fungicides, and its biological activity is very promising.

In short, with the in-depth progress of research work, more new varieties of compounds with 3azole as the active structural component are bound to appear. Mycloconazole, enazole, 3azole alcohol and bisbenzyl 3azole are all new fungicides of 3azole produced and utilized in China in recent years. View the original post

There are many types of pesticides and complex ingredients, and the following is explained with plant-based pesticides

1. Plant pesticide components mainly include: alkaloids, glycosides, toxic proteins, volatile essential oils, tannins, resins, organic acids, esters, ketones, terpenes and other substances.

2. Plant-based pesticides are a branch of biological pesticides. It refers to the use of stable active ingredients contained in plants, according to a certain method of the recipient plant after use, so that it is free from or alleviate diseases, insects, weeds and other harmful organisms.

3. Plant growth regulator is a class of pesticides used to regulate plant growth and development. Through specific plant growth regulators, people carry out a variety of regulatory activities such as promoting, inhibiting, and delaying plants, so that plants can grow and develop in the direction of human needs.

Precautions for pesticide use:

1. Selection of pesticides. There are many varieties of pesticides on the market, the quality of pesticides is uneven, and the prevention and control objects are also very different.

2. Preparation of pesticides. Although the preparation of pesticides is not difficult, there are often some problems due to carelessness or improper operation, which should be paid attention to. First, it is necessary to accurately weigh the amount of medicine and the amount of water; Second, the mother liquor should be diluted first; Third, we should pay attention to the safety of personnel and the environment.

Plant growth regulators, in particular, are very sensitive to concentrations. Pesticide experts told reporters: the plant growth regulator preparations used are best to strictly follow the instructions for operation. Increasing or decreasing the dosage at will have a significant impact on the efficacy of the drug, and even cause drug damage.

3. The appropriate period for the use of pesticides. Any kind of disease, insect and weed pests, has its prevention and control period, to determine according to the specific situation, can not be blindly used, too early or too late can not achieve the desired effect, only the correct choice of the appropriate period of prevention and control can achieve the most ideal effect. The appropriate period for the control of different diseases, pests and weeds can be determined according to the forecast of the local agricultural department.

The above content reference: Encyclopedia - Pesticides

Pesticides are divided into chemical composition:

There are many varieties of pesticides, which are usually classified according to the control object, mode of action, ** and ingredients;

1. According to the classification of control objects, it can be divided into insecticides, acaricides, fungicides, nematicides, herbicides, rodenticides and plant growth regulators, etc., contact killers, systemic agents, fumigants and specific insect growth regulators; Fungicides can be divided into protective agents and first-class agents, the classification of herbicides, and the herbicidal performance can be divided into selective herbicides and biocidal herbicides; According to the application method, it can be divided into stem and leaf treatment agent and soil treatment agent;

2. According to the mode of action, it can be divided into contact herbicides and systemic herbicides. Some pesticides can have several modes of action at the same time, such as dichlorvos, which has three effects: contact killing, stomach toxicity and fumigation;

3. According to the classification of pesticides, it can be divided into inorganic pesticides, organic synthetic pesticides, plant pesticides and biological pesticides;

4. Classification according to chemical composition: pesticides can be divided into organophosphorus, organochlorine, organic nitrogen, carbamate, pyrethroid insecticides, etc.; Fungicides can be divided into inorganic sulfur, organic sulfur, inorganic copper, organic heterocyclics, substituted benzene and pesticide antibiotics.

I don't know where you're going to classify it.

Functional use classification: insecticide, bactericidal, weedicide, growth regulator, etc.

Structural classification: organophosphorus, nicotinoids, pyrethroids, carbamates, etc.

Classification in dosage form: emulsifiable concentrate, powder, granules, suspension agent, water agent, etc.

Classified by toxicity: highly toxic, high, medium and low toxicity, and slightly toxic.

According to the method of use: spraying, seed dressing, sprinkling, flushing, root irrigation, hanging strips, fumigation.

There are too many ways to classify it, so I won't write it.

Pesticides can be divided into:

1. Organophosphorus.

2. Organochlorine.

3. Organic nitrogen.

4. Carbamate.

5. Pyrethrins, etc.;

Fungicides can be divided into:

1. Inorganic sulfur.

2. Organosulfur.

3. Inorganic copper.

4. Organic heterocyclics.

5. Replace benzene and pesticide antibiocides.

1 Insecticides.

It has a direct poisoning effect on the insect body, and can control its population formation or reduce and eliminate the degree of pest damage through other ways.

2 Acaricides.

It can prevent herbivorous harmful mites.

3 Fungicides.

It can kill, inhibit or neutralize toxic metabolites of pathogenic bacteria, so that plants and their products can be protected from pathogens or eliminate diseases.

4 Nematicides.

Pesticides used to control crop nematode diseases.

5 Herbicides.

A medicine that can be used to control weeds.

6 Rodenticides.

It is used to poison and kill various harmful rodents in a variety of occasions.

7 Plant growth regulators.

Agents that control, promote or regulate plant growth and development.

It can be divided into insecticides, acaricides, rodenticides, nematicides, molluscides, fungicides, herbicides, plant growth regulators, etc.

Q: What are the control methods for pesticide residues?

2. Pay attention to the concentration and dosage of the drug, and master the correct dosage;

3. Improve the performance of pesticides, such as adding surfactants to improve the performance of the liquid chemicals;

4. Mix pesticides reasonably.