The present study was undertaken to investigate the insecticidal properties of different plant extracts viz. Melia azadarach, Perthenium hysterophorus, Phlogocanthus thyrsiflorus, Vitextrifolia, Zanthoxylum acanthopodium and Azadirachta indica against lesser grain borer,

Rhizopertha dominica under the laboratory condition. Adult insects were exposed to the 1.5 g and2.5 g plant powder extract treated rice and mortality was assessed after 1,3,5,7 and 10 days. Therewas an increase in beetle mortality with days of exposure in all concentration. The result indicatedthat 2.5% P. hysterophorus and Z. acanthopodium extracts were more effective out of these sixplant extracts. They have shown high mortality (i.e. 75-80%) were found to be dose dependent. It was concluded that both P. hysterophorus and Z. acanthopodium can be used for the protection of stored rice grain from infestation of R. dominica.