Efficacy of certain insecticides against Jasmine gallery worm, Elasmopalpus jasminophagus (Hampson) (Lepidoptera: Pyralidae)

Six insecticides were evaluated against bud borer, Elasmopalpus jasminophagus in Jasminum multiflorum Andre. Mean per cent affected buds was lowest in chlorantraniliprole 18.5 SC (6.80) which was significantly superior as compared to rest of the treatments, followed by flubendiamide 480 SC (8.62) which was on par with spinosad 45 SC (9.83), quinolphos 25 EC (11.90). NSKE 5 per cent (13.53) and Beauveria bassiana 1 x 10⁸ spores/g (14.23) were found less effective as compared to the chemical insecticides and were on par with each other. Chlorantraniliprole 18.5 SC was most effective with regard to flower yield(1975.11 kg/ha)followed by flubendiamide 480SC (1728.22kg/ha), spinosad 45 SC (1530.71 kg/ha). The B: C ratio was highest in case of chlorantraniliprole 18.5 SC@0.1ml/lt(1: 3.47) followed by flubendiamide 480SC @ 0.2ml/lt (1: 2.72).