Abstract
A experiment was conducted to investigate the efficacy of different plant derivatives against the development of the green gram pest Callosobruchus chinensis (L). fed on green gram seeds Vigna radiate for one month period. The leaf extracts of lemon ( Citrus lemon ), mint ( Mentha arvensis ) and black pepper seed ( Piper nigram ) powders were evaluated for their growth, adult mortality and oviposition inhibition of Callosobruhus chinensis . The results revealed that the extracts of all the three plant products caused a considerable reduction in the number of bruchids. Among the treatments Piper nigram were found to be effective in destroying the pest.
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