Difference between Insecticide and Pesticide
There are many insects, plants, grass fungus which are harmful to farms and forests. So, they are considered unwanted insects, unwanted plants, etc. For preventing farms and forests from pests, pesticides are used. Pesticides are used to kill or destroy pests. Whereas, insecticides are used to destroy insects.
They are chemical substances, which are used directly or indirectly against pests in order to eliminate or control them. Pesticides are toxic or poisonous substances. Farmers generally use pesticides to control the pests or diseases of plants.
What is a pest?
A pest is a destructive plant or animal that directly or indirectly affects humans or the things that people are attached to, like crops, livestock, and forestry. They can be of following two types;
According to 'WHO' one-third population of the world is suffering from malnutrition. As population size is increasing, so for meeting the requirements of this population, continuous efforts are going on in the field of agriculture. But the agriculture field is facing the problem due to the intervention of pests. These pests attack the crops in fields and the stored grains. So to eliminate this pest, pest control methods are used.
What is Pest Control?
Pest control is the regular process of management of pests and their species. Pest control can be achieved by agro-technical, mechanical, biological, and chemical control.
Properties or characteristics of pesticides:
What is LD 50 value/ lethal dose?
The pesticides which can seriously harm or kill 50% of the total population of a pest has LD50 value.
Side effects of pesticides on the environment:
Classification of pesticides
1) Based on the source
i) Natural pesticides: It refers to pesticides, which are obtained from a natural source like plant or animal or bacteria or fungi. E.g., nicotine, pyrethrins, neem oil, boric acid, diatomaceous earth powder, rotenone.
ii) Synthetic pesticides: These pesticides are produced in the lab with the help of chemicals. They are also called man-made pesticides. Because of their low cost and effectiveness, these synthetic pesticides are widely used. Arsenic is the first inorganic pesticide. But the most famous and commonly used pesticide is DDT that is Dichloro - Diphenyl trichloroethene. DDT is used to kill the mosquito, which spread malaria. Farmers are mostly dependent on the synthetic pesticides to protect their crop from the pest. Common examples are DDT, chloranil, malathion, parathion.
2. Based on the target
3. Based on the mode of action
Mode of action means an area or part of the pest's body on which pesticides show their effect.
4. Based on the chemical
i) Inorganic Pesticides
ii) Organic pesticides
In this type of pesticide, hydrocarbon is present. They are of two types that are natural and synthetic.
Toxicity labels of pesticides
There are four toxicity labels that indicate the harmfulness of pesticides. These labels are present on the packet of pesticides for user reference and understanding.
The insecticide is used to destroy insects. It is a type of pesticide, which is used to kill insects that harm or are dangerous for farms and plants. The insecticides enter insect bodies in different ways such as through stomach, contact, and fumigate.
Insecticides enter the stomach of insects when the insects eat the plant on which the insecticide is sprayed. That's why it is called stomach enter mode. After insects come in contact with the plant or crop on which the insecticide is sprayed, the insecticide enters into the body of the insect. This is called contact enter mode. Fumigate is another entering mode. In this mode, the insecticides enter the body of insects through vapor or air.
Types of Insecticides
1. Organochlorine insecticides:
These insecticides are made by mixing chlorine with some other molecule. For example, Hexachlorocyclohexane pesticides are made by adding hydrogen and carbon to the chlorine. So in this type of pesticide, chlorine is the fixed molecule in every insecticide. For example, DDT, Hexachlorocyclohexane, aldrin, etc.
2. Organophosphorus insecticide:
These insecticides are made by mixing phosphate with some other molecule. For example, Tetraethyl pyrophosphate, parathion, etc.
3. Carbomate insecticide: This pesticide is made by using carbonic acid. For example, aldicarb, carbofuran, etc.
4. Botanical insecticide: This insecticide is made from plants. For example, by using neem leaves, using neem branches, other herbal things, these insecticides are produced. It is also known as an herbal insecticide.
Difference Between insecticide and pesticide
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