author(s)
BK Singh, Rakesh Pandey, AK Singh and MK Mishra

abstract
A field study was carried out to determine the efficacy of different insecticides against leafhopper and whitefly on okra crop during Kharif 2015 and 2016. Three different concentrations of each insecticide viz., flonicamid 50 WG and flupyradifurone 200 SL and single concentration of commonly used neonicotinoid i.e., imidacloprid 17.8 SL were used to observe their efficacy against leaf hoppers and whitefly on okra. The lowest population of leafhopper, 1.0/five leaves/plant during 2015 and 1.33/five leaves/plant during 2016 after 10 days of third spray was recorded in flonicamid 50 WG @ 0.4 g/l. However, the lowest population of whitefly, 1.53/five leaves/plant during 2015 and 1.33/five leaves/plant during 2016 after 10 days of third spray was observed in flupyradifurone 200SL @ 2.5 ml/l. The highest marketable fruit yield, 41.55 q/ha and 64.27 q/ha, respectively, during 2015 and 2016 was recorded from the treatment flonicamid 50 WG @ 0.4 g/l. Flonicamid and flupyradifurone both the chemicals gave satisfactory control in comparison to imidacloprid, thus, these new class insecticides may be a suitable option for the management of sucking insect-pests in okra.