Bioefficacy of abamectin, chlorantraniprole and emamectin benzoate against tobacco caterpillar, Spodoptera litura (Fab.)

Bioefficacy of abamectin (0.1, 0.09, 0.08, 0.07 and 0.06%) and emamectin benzoate (0.04, 0.009, 0.006 and 0.002%) was examined against 10d old larvae of S. litura by leaf dip bioassay method. Emamectin benzoate proved to be more toxic than abamectin with the LC30, LC50 and LC90 values of 0.001, 0.007 and 0.45% respectively at 12 hours after exposure (HAE). At 24 HAE the LC50 value of emamectin benzoate and abamectin were 0.002 and 0.02% respectively. Emamectin benzoate showed 10 times more toxicity than abamectin at LC50 and was quick in causing mortality than abamectin.