Insecticides and Pesticides

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Pesticides are chemical compounds which are used to control or kill the pets. This note contains an information about uses of insecticides and their usefulness and negative impact on nature.
Insecticides and Pesticides


Pesticides are chemical compounds which are used to control or kill the pets. Depending upon the types of organism, pesticides are classified as follows:

  1. Insecticides: These pesticides are used for controlling insects.

  2. Herbicides:These pesticides are used for destroying weeds.
  3. Fungicides: These pesticides are used for killing fungi.
  4. Miticides: They destroy mites.


The poisonous chemicals which are made by humans and used to control or kill the insects are called insecticides.

  1. Organic insecticides: Those insecticides which are obtained from the living source are called organic insecticides. Mainly, there are three types of organic insecticides. They are:
    1. Organochloride

      Example: DDT (Dichloro Diphenyl Trichloroethane)

      BHC ( Benzene Hexachloride)

    2. Organophosphorous

      Example: Malathion, Parathion

    3. Carbonate insecticides
      • Baygon
      • Temik
      • Dinetan
  2. Inorganic insecticides

    Those insecticides derived from minerals are called inorganic insecticides.

    Example: calcium arsenate, lead arsenate

Advantages of using insecticides

  1. They kill or destroy harmful insects.
  2. They can destroy all the stages of the lifecycle of harmful insects. As a result, there is increase in crop yield.
  3. They help to control several diseases by killing germs.

Disadvantages of using insecticides

  1. Most of the insecticides are non biodegradable. Hence, they are harmful to insects and plants.
  2. Insecticides leave harmful deposits on food crops. The use of such food crops has adverse effects on the health of human beings and all other animals.
  3. They can pollute lakes, ponds, streams, etc.
  4. They destroy useful insects also.
  5. The spray of insecticides can affect plants and animals too.

Precautions in using insecticides:

  1. They should be kept away from the reach of children and ignorant persons
  2. The name of the insecticides should be labelled clearly.
  3. While applying it, the mouth, nose and eyes should be well covered.
  4. It should be used in little amount.
  5. We should be careful while using it.
  6. After spraying or dusting it, hands and other body parts must be properly cleaned.

Things to remember
  • Pesticides are chemical compounds which are used to control or kill the pets. 
  • Insecticides are used for controlling insects.
  • Herbicides are used for destroying weeds.
  • Fungicides are used for killing fungi.
  • Miticides are used to destroy mites.
  • It includes every relationship which established among the people.
  • There can be more than one community in a society. Community smaller than society.
  • It is a network of social relationships which cannot see or touched.
  • common interests and common objectives are not necessary for society.
Videos for Insecticides and Pesticides
8. Organophosphate Insecticide Action
9. Carbamate Insecticide Action
Controlling rice planthoppers without insecticides
Dr. Raymond Cloyd, How Insecticides Work
Home and garden use of pesticides
Natural Insecticides for a Vegetable Garden : Vegetable Gardening
Proper Pesticide Use
Toxic Food -- Poison On Our Plate?
Use of pesticide Endosulfan in India
Questions and Answers
DDT is the chlorine containing insecticides and Malathion is the phosphorus containing insecticide.
The poisonous chemical substances used to destroy or kill harmful insects are called insecticides. The use of insecticides is discouraged because it kills the useful insects like honey bee and makes chemical pollution in environment.
'Baygon' is the name of a carbamet insecticide. Insecticides are not good for health. Their use is harmful to other animals, birds and humans. But, without their use, it is not possible to grow the required amount of food. So, "the use of insecticide is not an interest, but an obligation".

The inorganic insecticides are prepared from minerals. The uses of inorganic insecticides are:
a. The help to destroy the annoying insects.
b. They help to control several diseases.

DDT- Dichlorodiphenyl Trichloroethane BHC- Benzene Hexachloride

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