Authors : S. R. Kochhar1 R. Urkude2 V. Dhurvey3 D. C. Sindhimeshram4
Page Nos : 639-646
Description :
From centuries humans have been using natural insecticides to control insect pests.
With advancement in technology, researchers observed the compounds responsible for
activity in the natural products.As soon as nature of active constituent was known
synthetic analogues were investigated in attempt to elucidate the principles governing
their activity and that lead to synthesis of simple or more potent insecticides e.g
pyrethrins responsible for insecticidal activity was extracted from chrysanthemum
flowers, its structure was studied and modified to develop synthetic pyrethroids .These
synthetic insecticides were found to have greater insecticidal activity ,photostability
and requires lower dose rates than the conventional pesticides. The usefulness of
synthetic pesticides in agricultural practices is unquestionable. However, injudicious
use of synthetic pesticides present hazardous impacts on humans and environment but
judicious use may help to control pest and environmental problems. This review covers
the historical use of natural products in agricultural practices, the impact of natural
products on the development of new pesticides and the future prospects for natural
products-based pest management,with special focus on pyrethrins and the following
synthetic pyrethroid insecticides.
