Evaluation of certain medicinal plant extracts for the management of late larval Flacherie disease of silkworm, Bombyx mori L.

Abstract

The study on evaluation of nine different medicinal plant extracts against late larval flacherie disease of silkworm B. mori L. showed significant results. Among the nine medicinal plants extracts, Asparagus officinalis administration in silkworms (CSR2 and PM x CSR2) was found effective by enhancing the larval growth parameters viz., fifth instar larval duration (197.48 h and 189.10 h), mature larval weight (33.66 and 29.28 g / 10 larvae), ET50 value for larval mortality (184.66 and 205.84 h), reduced larval mortality (18.00 and 12.66 %) and ERR (79.33 and 86.67 %) in both the silkworm breeds respectively compared to control.