International Journal of Plant Sciences

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Evaluation of Toxicity of Emamectin Benzoate 5 Wg to Honey Bees


Affiliations
1 Department of Agricultural Entomology, Agricultural College and Research Institute, (T.N.A.U.), Madurai (T.N.), India
     

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Laboratory studies were carried out to assess the contact toxicity of emamectin benzoate 5 WG to workers of Indian bee, Apis cerana indica and Italian bee, Apis mellifera. Emamectin benzoate 5 WG to Indian bees showed that there was no mortality in emamectin benzoate 5 WG @ 100 and 125 g/ha, while emamectin benzoate 5 WG @ 150 g/ha caused 10.00 per cent at 6 (Hours after Treatment) HAT, and it increased to 6.67, 16.67 and 23.33 per cent, respectively after 24 HAT. However, standard insecticides lufenuron 5 EC @ 600 ml/ha, chlorantroniliprole 18.5 SC @ 150 ml/ha and spinosad 45 SC @ 125 ml/ha caused increased mortality of 30.00, 50.00 and 70.00 per cent, respectively. The mortality increased as the time of exposure increased from 6 to 24 HAT. Similar trend was also observed in Italian bees. Hence, emamectin benzoate 5 WG considered could be highly safe to both the species of honey bees than standard insecticides.

Keywords

Emamectin Benzoate, Honey Bees, Safety, Toxicity.
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  • Govindan, K. (2009). Evaluation of emamectin benzoate 5 SG against bollworms of cotton and fruit borers of okra. Ph.D. Thesis, Tamil Nadu Agricultural University, Coimbatore, India, 224p.

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  • Evaluation of Toxicity of Emamectin Benzoate 5 Wg to Honey Bees

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Authors

K. Thangavel
Department of Agricultural Entomology, Agricultural College and Research Institute, (T.N.A.U.), Madurai (T.N.), India
R. K. Murali Baskaran
Department of Agricultural Entomology, Agricultural College and Research Institute, (T.N.A.U.), Madurai (T.N.), India
P. Parthiban
Department of Agricultural Entomology, Agricultural College and Research Institute, (T.N.A.U.), Madurai (T.N.), India

Abstract


Laboratory studies were carried out to assess the contact toxicity of emamectin benzoate 5 WG to workers of Indian bee, Apis cerana indica and Italian bee, Apis mellifera. Emamectin benzoate 5 WG to Indian bees showed that there was no mortality in emamectin benzoate 5 WG @ 100 and 125 g/ha, while emamectin benzoate 5 WG @ 150 g/ha caused 10.00 per cent at 6 (Hours after Treatment) HAT, and it increased to 6.67, 16.67 and 23.33 per cent, respectively after 24 HAT. However, standard insecticides lufenuron 5 EC @ 600 ml/ha, chlorantroniliprole 18.5 SC @ 150 ml/ha and spinosad 45 SC @ 125 ml/ha caused increased mortality of 30.00, 50.00 and 70.00 per cent, respectively. The mortality increased as the time of exposure increased from 6 to 24 HAT. Similar trend was also observed in Italian bees. Hence, emamectin benzoate 5 WG considered could be highly safe to both the species of honey bees than standard insecticides.

Keywords


Emamectin Benzoate, Honey Bees, Safety, Toxicity.

References