National Academy of Agricultural Sciences (NAAS)
|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The present investigation was carried during year 2019-2020 at Division of Entomology, Faculty of Agriculture, Wadura, Sopore. A total of six larval instars of Agrotis ipsilon, were noticed in three generations of one calendar year, during the present study. The average length and breadth from first to sixth cutworm caterpillars ranged between 1.88 -34.21mm and 0.35-3.5mm respectively. Whereas, the mean developmental duration of the various larval instars ranged from 6.93-11.88 days, 4.60-9.38 days and 5.85-10.45 days for first, second and third generation respectively. The mean larval head width gradually increases in the successive instars, The mean larval head width ranges from 0.30 – 3.00mm, 0.30-3.36mm and 0.30- 3.28mm for first to sixth instar in first, second and third generation. Study of larval mortality revealed that the maximum cumulative death percentage was in forth larval instar as 35.67 per cent, while as the minimum larval mortality was computed for first larval instar as 11.00 per cent.
Citations |
 |
 |
 |
 |
