Abstract

                                A study was conducted to evaluate the effect of leaf extracts as ovipositional deterrents, ovicide and maggoticide against uzi fly, Exorista bombycis (Louis) at three concentrations viz., 0.2, 0.4 and 0.8 per cent. Among the treatments, 0.8 per cent of Eucalyptus citriodora recorded reduced oviposition (54.50 %), egg hatchability (63.85 %) and maggot recovery (74.00 %) followed by Tridax procumbens (55.00, 64.73 and 75.00 %, respectively) and was statistically superior than distilled water (97.95 %) and absolute control (100.00 %). Significantly higher maggot mortality was registered at 0.8 per cent Eucalyptus citriodora (46.00 %) followed by T. procumbens (45.00 %) compared to distilled water (3.85 %) and absolute control (0.00 %). Spraying leaf extracts of E. citriodora and T. procumbens, also drastically reduced the pupation rate, adult emergence and fecundity of uzi fly.

Key words : Silkworm, botanicals, Exorista bombycis, Eucalyptus, management.