The influence of insects on human life - destructive and beneficial - can be traced back to
prehistoric days until now. Agricultural entomology concerns itself with the study of insects
associated with various aspects of agriculture. It deals with the study of both beneficial and
detrimental insects. Insects that are detrimental to agriculture are commonly known as insect
pests. The bulk of agricultural entomology deals with the control of those. Insect pest control
is now conducted through integrated pest management (IPM) principles that aim to be sustainable
in the use of resources and environmentally friendly. IPM requires plenty of experience and
knowledge and combines all available methods of control. Prevention is also an important
component of IPM programs. In India agriculture is the main occupation of the majority of
people. The most important natural enemies of agricultural crops are insects plant diseases
weeds and weather conditions. Out of this insects are the greatest competitors of man in the
struggle for existence. In the present topic the various kinds of pest will be studied in broad
sense view.
