Bio-efficacy of Synthetic Pyrethroids against Brinjal Shoot and Fruit borer, Leucinodes orbonalis (Guen.)

A field experiment was carried out during Rabi season 2002, to evaluate the bio-efficacy of cypermethrin applied at @ 0.003, 0.006 and 0.01%, and fenvalerate applied at @ 0.004, 0.008 and 0.015% concentrations against brinjal shoot and fruit borer, Leucinodes orbonalls (Guen.) on brinjal var. ‘Pusa Purple Round’ along with endosulfan @ 0.07%. All insecttcidal treatments gave effective control of shoot and fruit borers and increased yield of fruit over control. However, no significant difference was recorded among the treatments in reducing the shoot damage after 7cl of spraying. Plots treated with cypermethrin 0.006% and fenvalerate 0.015% recorded the 28.25% shoot damage at 7 d after spray. Yield was maximum (96.91 q ha−1) in cypermethrin 0.006% treated plots, followed by cypermethrin 0.01% (93.83 q ha−1), which was more than endosulfan 0.07% treated plots (68.58 q ha−1)