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Journal of Entomology and Zoology Studies
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ISSN Print: 2349-6800 | ISSN Online: 2320-7078

Journal of Entomology and Zoology Studies

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2017, Vol. 5, Issue 4
Studies on the influence of Bollgard II Bt cotton (Cry 1Ac + Cry 2Ab) plants against I and II instar larvae of Spodoptera litura (Fab.)

Venkatesh YN, Prasad NVVSD, Varun Saini and Satyapriya Singh

The present investigation was conducted at Regional Agricultural Research Station, Lam, Guntur, A.P. during kharif, 2014-15. To study the affect of BG II cotton plants against I and II instar larvae of Spodoptera litura. The mortality of 1st instar larvae of S. litura was recorded 100 % and 2nd instar larvae recorded 92.5 % on BG II hybrids, where as the mortality was very low and more or less similar in BG I and non Bt cotton hybrids 15-17 % and 10- 12% respectively. The mean weight of larva fed on BG II cotton leaves was found to be very low, where as BG I hybrids shows marginal influence and non Bt versions did not affect the larval or pupal weight and weight gains were more or less similar.
Pages : 1721-1728 | 513 Views | 20 Downloads
How to cite this article:
Venkatesh YN, Prasad NVVSD, Varun Saini, Satyapriya Singh. Studies on the influence of Bollgard II Bt cotton (Cry 1Ac + Cry 2Ab) plants against I and II instar larvae of Spodoptera litura (Fab.). J Entomol Zool Stud 2017;5(4):1721-1728.
Journal of Entomology and Zoology Studies
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