author(s)
Chitralekha, GS Yadav and Tarun Verma

abstract
Studies on the efficacy of insecticides against H. armigera were conducted under field conditions of Haryana. Eight different treatments including control viz, novaluron 10EC @ 375 ml/ha, chlorantraniliprole 18.5SC @ 135 ml/ha, quinalphos 25EC @ 1000 ml/ha, lambda-cyhalothrin 5EC @ 500 ml/ha, nimbecidine 300ppm, Bacillus thuringiensis var. kurstaki @ 750 g/ha and emamectin benzoate 5 SG @ 220 g/ha were applied at economic threshold of H. armigera, i.e. 1 l/mrl on chickpea. After first and second spray minimum mean larval population of H. armigera was recorded in chlorantraniliprole 18.5 SC (0.68 and 0.90 l/mrl) and it was statistically on par with novaluron 10 EC (0.97 and 0.90 l/mrl), whereas maximum mean larval population was in nimbecidine (1.57 and 1.83 l/mrl) and it was statistically on par with emamectin benzoate 5 SG (1.51 and 1.65 l/mrl). All the treatments were significantly better than control. Percent larval reduction over control was highest in chlorantraniliprole 18.5 SC (85.68 and 82.59), whereas it was lowest in nimbecidine (66.94 and 59.68) after first and second spray of insecticides. On the basis of pooled mean of both the years (2015-16 and 2016-17), minimum pod damage (20.23%) and highest yield (1494.72 kg/ha) was recorded in chlorantraniliprole 18.5 SC.