Feeding inhibition with bioformulations in cut worms Agrotis ipsilon (Hufnagel)

Feeding inhibition study of bioformulations viz., Neemastra, Agniastra, Brahmastra, Dashparni ark and garlic + ginger + mint mixture was carried out against fourth, fifth and sixth instar larvae of A. ipsilon. These bioformulations were observed to be not giving significant mortality in the fourth, fifth and sixth instar larvae but result in feeding inhibition. Concentrations ranging from 1.5% to 24% were evaluated for this action. It was observed that Dashparni ark was the most effective causing maximum feeding inhibition to later instar larvae of A. ipsilon followed by Brahmastra, Agniastra, Neemastra and garlic+ ginger+ mint mixture. Dashparni ark was found 1.35, 1.34 and 1.26x more effective compared to the least effective garlic + ginger + mint mixture against fourth, fifth and sixth instar larvae of A. ipsilon, respectively.