How are agrochemicals classified?

Agricultural chemicals are classified as follows by application target. Agents for controlling harmful insect pests that damage field crops. Agents for controlling diseases that damage field crops. Agents that simultaneously control harmful insect pests and diseases that damage field crops.

What is the classification of pesticides?

Based on chemical composition, pesticides are classified into four main groups namely; organochlorines, organophosphorus, carbamates and pyrethrin and pyrethroids.

What are the three examples of agrochemicals?

Agrochemicals include pesticides, insecticides, herbicides, fungicides, along with fertilizers and soil conditioners.

What are the 4 types of pesticide exposure?

  • Unintentional environmental – any exposure from air, water, or soil contamination.
  • Unintentional misuse – improper or incorrect use of a pesticide product resulting in a pesticide exposure.
  • Unintentional occupational – any job-related exposure.
  • Unintentional general – all other unintentional exposures.

What are the two main classifications of pesticides?

Miticides (also called acaricides) kill mites that feed on plants and animals. Microbial pesticides are microorganisms that kill, inhibit, or out-compete pests, including insects or other microorganism pests.

What are the 7 categories of pesticides?

Types of Pesticides
  • Insecticides – insects.
  • Herbicides – plants.
  • Rodenticides – rodents (rats & mice)
  • Bactericides – bacteria.
  • Fungicides – fungi.
  • Larvicides – larvae.

What are LD50 and LC50?

LD50 and LC50 are the parameters used to quantify the results of different tests so that they may be compared. LD50 is the abbreviation used for the dose which kills 50% of the test population. LC50 is the abbreviation used for the exposure concentration of a toxic substance lethal to half of the test animals.

What is a Class 3 insecticide?

Acute toxicity makes it possible to classify pesticides into five classes: class I – highly toxic, class II – toxic, class III – moderately toxic, class IV – slightly toxic, class V – virtually non-toxic.

What are the types of toxicity?

Types. There are generally five types of toxic entities; chemical, biological, physical, radiation and behavioural toxicity: Disease-causing microorganisms and parasites are toxic in a broad sense but are generally called pathogens rather than toxicants.

WHO classifies pesticides?

EPA
EPA classifies pesticides as: restricted use pesticides (RUPs); or. general use (unclassified) pesticides.

What is pesticides write classification according to mode of action?

Based on the mode of action, it is classified as physical poisons, nerve poisons, respiratory poisons, protoplasmic poisons, general poisons, and chitin inhibitors. Based on toxicity, it is classified into four types: Extremely toxic – Colour: red, symbol: skull and poison, oral LD50: 1-50.

What are the characteristics of pesticides?

This EDIS publication provides a description of the following pesticide characteristics: solubility, adsorption, persistence, and volatility.

What is a Category 1 pesticide?

Pesticides that are classified as highly toxic (Toxicity Category I) on the basis of either oral, dermal, or inhalation toxicity must have the signal words DANGER and POISON printed in red with a skull and crossbones symbol prominently displayed on the front panel of the package label.

Why are pesticides classified?

Pesticides can be classified based upon their biological mechanism function or application method. Most pesticides work by poisoning pests. A systemic pesticide moves inside a plant following absorption by the plant. With insecticides and most fungicides, this movement is usually upward (through the xylem) and outward.

What are the 4 main modes of action of insecticides?

THEIR ACTIONS

Brown (1951) has classified insecticides into five groups, based on mode of action: (l) physical poisons, (2) protoplasmic poisons, (3) respiratory poisons, (4) nerve poisons, and (5) poisons of a more general nature.