In vitro Safety of Emamectin Benzoate 5 SG to Chrysoperla carnea (Stephens)

Abstract

Laboratory experiments were conducted at the Insectary, Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore during 2008-2009 to study the safety of emamectin benzoate 5 SG to the eggs, larvae and adults of Chrysoperla carnea (Stephens). Low egg mortality was recorded in emamectin benzoate 5 SG at 7 g (9.67%), 9 g (15.00%) and 11 g a.i. ha -1 (15.33%). The standard, Proclaim® 11 g (14.33%), spinosad 45 SC at 75g (19.00%) and endosulfan 35 EC at 350 g a.i. ha -1 (34.07%) recorded high mortality. Adult longevity was the highest in untreated check (15.77 days), emamectin benzoate 5 SG at 7 g (10.50 days) and 9g a.i. ha -1 (9.00 days). The number of eggs laid per five females was also greater in untreated check (373.67 eggs), 7g (132.33 eggs) and emamectin benzoate 5 SG at 9 g a.i. ha -1 (126.67 eggs). At 48 HAT, the lowest larval mortality was recorded in emamectin benzoate 5 SG at 7 g (17.67%) and 9 g a.i. ha -1 (21.00%) in larval feeding method. In dry film method at 48 HAT, the lowest per cent mortality of 16.67 per cent in emamectin benzoate 5 SG at 7 g followed by 26.67 per cent in emamectin benzoate 5 SG at 9 g a.i. ha -1 . Endosulfan 35 EC at 350 g a.i. ha-1 registered the highest larval mortality (43.33%), while untreated check recorded 3.33 per cent mortality.

DOI

https://doi.org/10.29321/MAJ.10.100206

Pages

832 - 836

Creative Commons

Copyright

© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

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