Bio-efficacy of different insecticides against tobacco leaf eating caterpillar, Spodoptera litura (Fab.) infesting soybean under field condition

Abstract

With a view to find out the relative bio-efficacy of different insecticides against tobacco leaf eating caterpillar, Spodoptera litura (Fab.) infesting soybean under field condition, field trial was carried out at Instructional Farm, College of Agriculture, Junagadh Agricultural University, Junagadh during Kharif season of 2017. The result of two applications of different insecticidal treatments against tobacco leaf eating caterpillar, S. litura (Fab.) revealed that the treatment with chlorantraniliprole 0.006 per cent, indoxacarb 0.008 per cent and quinalphos 0.05 per cent were found most effective against S. litura (Fab.). Among the combination of different insecticidal treatments there order of effectiveness were found as B. bassiana 0.0035 per cent + chlorantraniliprole 0.003 per cent >B. bassiana 0.0035 per cent + indoxacarb 0.004 per cent >M. anisopliae 0.0035 per cent + chlorantraniliprole 0.003 per cent >M. anisopliae 0.0035 per cent + indoxacarb 0.004 per cent. However M. anisopliae 0.007 per cent and B. bassiana 0.007 per cent were found less effective in controlling the pest.