The principle of efficient use of available system for quality improvement is tried to utilize in the present study. The present attempt was undertaken to study the influence of acetone solution of Ferruginol, a natural phenol and a meroterpene compound, on the cocoon characters and silk filament parameters of silk worm Bombyx mori (L.) (Race: PM x CSR2). Three concentrations (5ppm; 10ppm and 20ppm) of Ferruginol were prepared. | Topical application of acetone solution of ferruginol meroterpene compound to the fifth instar larvae of silkworm Bombyx mori L. Race PM x CSR2 for quality improvement in silk