author(s)
Karthikeyan R and Ayysamy R

abstract
Biosafety of insecticides on natural enemies, coccinellids was evaluated in okra at two season in vilacherri, Madurai (I Season: August 2015 to December 2015 and II Season: August 2016 to December 2016) of Tamil Nadu. The new formulation of Emamectin benzoate 1.9 EC at different doses (5.00, 6.75, 8.50 and 11.00 g.ai ha-1) against the standard check, Pyridalyl 10 EC (50 g a. i. ha 1 and Lamda cyhalothrin 5 CS (15 g a.i. ha 1) for their safety to coccinellid predators in okra eco-system were studied. The coccinellid population were recorded prior to spraying and at 3, 7, 10 and 14 days of each spraying from ten randomly selected plants in each all the treatments. Emamectin benzoate 1.9 EC was found to be safer to coccinellids at all concentrations tested and the highest population was recorded in plots treated with emamectin benzoate 1.9 EC at 5.00 g a.i. ha 1 followed by emamectin benzoate 1.9 EC at 6.75,8.50 and 11.00 g a.i. ha 1 respectively.