Antifeedant bioassay was carried out using leaf disc no choice method. The crude extracts were dissolved in acetone and fresh castor leaf discs of 4-cm diameter were punched using cork borer and dipped in 0.5, 1.0, 2.5 and 5.0% concentrations.
Antifeedant bioassay was carried out using leaf disc no choice method.The crude extracts were dissolved in acetone and fresh castor leaf discs of 4-cmdiameter were punched using cork borer and dipped in 0.5, 1.0, 2.5 and 5.0%concentrations.