Efficacy of Bioformulations Against Cut Worm Agrotis Ipsilon Hufnagel in Potato

The 1^st, 2^nd and 3^rd instar larvae of the potato cut worm Agrotis ipsilon Hufnagel were subjected to leaf dip method of bioassay to evaluate some bioformulations. It was observed that dashparni ark was the most effective causing maximum mortality followed by brahmastra, agniastra, neemastra and garlic + ginger + mint mixture. The bioformulations evaluated at 10% in the potato seedling trays decreased the damage by the 4^th instar larvae to 69.24% with dashparni ark, accompanied by brahmastra (61.53%), agniastra (49.24%), neemastra (41.53%) and garlic + ginger + mint mixture (29.24%) compared to untreated control. The results thus reveal that the bioformulations cause mortality in the early instars, and reduce the damage by the later instars.