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Classification of Agrochemicals

Classification of agrochemicals

(1) According to the prevention and treatment objects:

insecticides, fungicides, acaricides, nematicides, rodenticides, herbicides, defoliants, plant growth regulators and so on.

(2) According to the classification of processing dosage forms:

wettable powders, soluble powders, emulsions, emulsions, concentrated emulsions, creams, pastes, colloids, fumigants, fumigants, aerosols, oils, granules, microparticles, and so on.

(3) According to the chemical composition classification

1. Inorganic agrochemicals (inorganic pesticides are agrochemicals obtained from natural minerals)

Inorganic agrochemicals, which come from nature with good environmental solubility and low toxicity to people, they are widely advocated at present. They can be used in the production of pollution-free food, green food and organic food. Inorganic agrochemicals include inorganic agrochemicals, inorganic fungicides, inorganic herbicides, such as stone sulfur mixture, sulfur powder, Bordeaux liquid, etc. Inorganic agrochemicals are generally with small molecular weight and poor stability, they are not suitable for mixing with other agrochemicals.

2. Biopesticides (biopesticides refer to products that use organisms or their metabolites to control diseases and insect pests)

Biopesticides have a strong specificity, generally only for one or a certain kind of disease and insect to play a role, non-toxic or very small toxicity to people, they are also pesticides that are vigorously promoted at present; they can be used in the production of pollution-free food, green food, organic food; biopesticides, including true bacteria, bacteria, viruses, nematodes and other metabolites, such as Bacillus thuringiensis, Beauveria bassiana, insects Nuclear polyhedrosis virus, avermectin. When using biopesticides, live bacterial agrochemicals should not be mixed with bactericides and agrochemicals containing heavy metals, and spraying should be avoided when the sun is strong.

3. Organic agrochemicals (including natural organic agrochemicals and synthetic agrochemicals)

(1) Natural organic agrochemicals are organic compounds from the nature, which have good environmental solubility and low toxicity to human beings. They are widely advocated at present. They can be used in the production of pollution-free food, green food and organic food. Such as plant agrochemicals, gardening spray oil.

(2) Synthetic agrochemicals are synthetic chemical agrochemicals; they have many kinds and complex structures, most of which are macromolecular compounds; the pH is mostly neutral, most of which are easy to decompose under the condition of strong alkali or acid; some of them are suitable for current use and mixed use. It can be divided into five categories:

1) Organic insecticides, including organophosphorus, organochlorine, carbamate, pyrethroid and specific insecticides.

2) Organoacaricide: including specific organoacaricide containing tin and organoacaricide not containing tin.

3) Organic fungicides: including dithiocarbamates, Phthaloyl imines, benzimidazoles, dicarbamide, organophosphorus, phenylamide, sterol biosynthesis inhibitors and so on.

4) Organic herbicides: including phenoxycarboxylic acids, homotriphenyls, substituted urine, carbamates, amides, benzoic acids, diphenylethers, dinitroanilines, organic phosphorus, sulfonylureas and so on.

5) Plant growth regulators mainly include auxin, gibberellin, cytokinins and so on.

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