Explain the methods of controlling insect pests.
Controlling insect pests:
(i) Root cutting type of insects is controlled by mixing insecticides in the soil.
Example - Chloropyriphos.
(ii) Stem and leaf cutting type of insects can be controlled by dusting or spraying the contact insecticides.
Example - Malathion, Iindane and thiodan.
(iii) All sap sucking insects can be controlled by spraying systematic insecticides.
Example - Dimethoate and metasystox.