Repeated cultivation of the same crop like paddy results in a huge food reserve to a given pest, which encourages a rapid growth of the pest population. Any change in the crop would create a deficit in its food supply which results in a considerable mortality. Sometime a given pest population may be wiped out [...]
Systemic Insecticide: Insecticides that get into the body with food and affect different systems. e.g., Lead Arsenate, NaF.
Contact Insecticide: Insecticides that kill the insect on contact through toxic effects. e.g., BHC, DDT, Aldrin.
Insecticide: Chemical agents used for destroying insects. eg. DDT.
Pesticide: Chemicals meant for destruction of pests of any kind. e.g., Endrine, Drimecron etc.
Fumigation: The method of pests control through fume of some specific pesticides. Fumigants. e.g., Methyl Bromide.
