Larval Biology of Black Cutworm Agrotis ipsilon on Maize in Kashmir

The present investigation was carried during year 2019-2020 at Division of Entomology, Faculty Agriculture, Wadura, Sopore. A total six larval instars Agrotis ipsilon, were noticed in three generations one calendar year, the study. average length and breadth from first to sixth cutworm caterpillars ranged between 1.88 -34.21mm 0.35-3.5mm respectively. Whereas, mean developmental duration various 6.93-11.88 days, 4.60-9.38 days 5.85-10.45 for first, second third generation head width gradually increases successive instars, ranges 0.30 – 3.00mm, 0.30-3.36mm 0.30- 3.28mm instar generation. Study mortality revealed that maximum cumulative death percentage forth as 35.67 per cent, while minimum computed 11.00 cent.