Anti-environment impacts of the widespread use of synthetic pesticides initiated exploration of safer ways to pest management. Plant products are now being studied for their role in curbing pest menace. In present study, acetone extract of seeds of Nyctanthes arbor-tristis has been evaluated for phagodeterrent properties against pulse beetle, Callosobruchus chinensis. The extract showed 48.7865, 72.888, 80.020 and 85.078 percent seed protection over control for 25%, 50%, 75% and 100% dose levels, respectively.