author(s)
DN Kambrekar

abstract
The experiment on the bio-efficacy of Pyrrole (Chlorfenapyr) insecticide against Spodoptera litura and Helicoverpa armigera in soybean was conducted at Main Agricultural Research Station (MARS), University of Agricultural Sciences, and Dharwad during 2016-17 and 2017-18. The results revealed that, among the treatments evaluated against S. litura and H. armigera during 2016-17, chlorfenapyr 240 SC @ 1200 ml/ha was effective in reducing the larval population by recording the lowest population of 0.33 larvae /mrl and 0.50 larvae /mrl @ 10 DAS which is on par with the standard check, chlorantraniliprole 18.5 % SC @ 150 ml/ha (0.17 larvae /mrl each). Whereas, the highest larval population was recorded in the untreated control (5.67 and 5.57 larvae /mrl). Similar trend was observed during 2017-18 also in which least population was observed in chlorfenapyr 240 SC @ 1200 ml/ha (1.00 and 1.80 larvae/mrl) @ 10 DAS which is on par with the standard check, chlorantraniliprole 18.5 % SC @ 150 ml/ha (0.83 and 0.67 larvae /mrl) whereas, the highest larval population was recorded in the untreated control (6.83 larvae /mrl). Further, chlorfenapyr 240 SC @ 1200 ml/ha has also recorded the highest seed yield of 1898 q/ha in 2016-17 and 1880 q/ha during 2017-18.