19
Jun
This use of pesticides is so common that the term pesticide is often treated as synonymous with plant protection product. They include pesticides of both synthetic and plant origin.
Pesticides are chemical substances that are meant to kill pests.
Chemical classification of pesticides. The WHO Recommended Classification of Pesticides by Hazard. This document sets out a classification system to distinguish between the more and the less hazardous forms of selected pesticides based on acute risk to human health that is the risk of single or multiple exposures over a relatively short period of time. Based on chemical nature insecticides are classified as carbamates organochlorine organophosphorus pyrethroids neonicotinoids miscellaneous pesticides such as spinosyns benzoylureas.
Dust- pesticide prepared as dry fine particles eg Sevin 85 WP Granules G- Pesticides prepared as large dry particles eg Furadan. Wettable Powders WP- consist of finely divided particles with other substances that enable the powder to be mixed with water to form a stable suspension eg. Classification of Pesticides The US Environmental Protection Agency EPA defines a pesticide as any substance or mixture of substances intended for preventing destroying repelling or mitigating any pest.
A pesticide may be a chemical substance or biological agent such as a virus. 26 righe The Pest Management Regulatory Agency PMRA has adopted a numerical classification system for. On chemical composition pesticides are classified into four main groups namely.
Organochlorines organophosphorus carbamates and pyrethrin and pyrethroids. The chemical based classification of pesticides is rather complex. In general modern pesticides are organic chemicals.
They include pesticides of both synthetic and plant origin. Pesticides can be grouped in a number of different ways. Most commonly they are grouped according to.
Their target the pests they control their mode of action the way they control the pest their chemical structure their method of application the timing of their application 9. Bactericides for the control of bacteria 2. Based on toxicity of pesticides WHO classified them into four classes.
Extremely dangerous highly dangerous moderately dangerous and slightly dangerous. Pesticides are also divided into groups according to their chemical structure for example. Organo phosphates or synthetic pyrethroids.
More detail on this a little later in this section. 123 Classification Properties and Products. 23 Classification of pesticides The word pesticide is an umbrella term for all insecticides herbicides fungicides rodenticides wood preservatives garden chemicals and household disinfectants that may.
The regulation dealing with the production and licensing of pesticides contains a positive list of approved active substances the chemical ingredients of pesticides drawn up at EU level. Pesticides are then licensed at national level on the basis of this list. 1B Organophosphates AcephateOrthene TTO 24 GHN Amvac Chemical Corp.
Orthene TR 24 GHBASF Chlorpyrifos ME 24 GHNBASF DuraGuard Dursban 50 WP 24 N Corteva Agriscience Malathion Gowan Malathion 8F 12 N Gowan Company PhosmetImidan 70W 24 N Gowan Company 2B Phenylpyrazoles Fipronil TopChoice 24 N Bayer Environmental. Chemical pesticides are further subdivided into organochlorine organophosphate carbamate and pyrethroids. Biopesticides are group of pesticides derived from natural materials such as animal plant and microorganism bacteria viruses fungi and nematodes.
4 The WHO Recommended Classification of Pesticides by Hazard The classification is based primarily on the acute oral and dermal toxicity to the rat since these determinations are standard procedures in toxicology. Where the dermal LD 506 value of a compound. Pesticides are chemical substances that are meant to kill pests.
In general a pesticide is a chemical or a biological agent such as a virus bacterium antimicrobial or disinfectant that deters incapacitates kills pests. This use of pesticides is so common that the term pesticide is often treated as synonymous with plant protection product. The WHO recommended classification of pesticides by hazard and guidelines to classification.
Hazardous substances classification. International Programme on Chemical Safety. ISBN 978 92 4 154796 3 NLM classification.
WA 240 ISSN 1684-1042.