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Evaluation of Toxicity of some Novel Molecules of Insecticides against Spodoptera litura (FAB.)


Affiliations
1 Forest Protection Division, Arid Forest Research Institute, New Pali Raod, Jodhpur, Rajasthan, India
2 Forest Protection Division, Institute of Forest Productivity, Ranchi, India
3 Department of Entomology, College of Agriculture, G. B. Pant Univ. of Agriculture and Technology, Pantnagar – 263145, U.S. Nagar, Uttarakhand, India
4 Department of Entomology, College of Agriculture, G. B. Pant Univ. of Agriculture and Technology, Pantnagar – 263145, U.S. Nagar, Uttarakhand
     

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An attempt was made to assess the toxicity of some novel molecules of insecticides against Spodoptera litura (Fab.). The dose mortality response to the 7 d old larvae of S. litura indicated that spinosad at 24 h was 4.773 times more toxic than cartap hydrochloride at LC50 value. By the lapse of time this ratio further increases to 82.5 at 48 h and 71 times at 72h. The relative toxicity ratio (RTR) of novel molecules at LC50 value in comparison to cartap hydrochloride at 24h and 48h were: spinosad (4.77, 9.9)> fipronil (1.59, 3) and at 72h the values were spinosad (10.14) and fipronil (2.54). LC50 values of cartap hydrochloride, fipronil, spinosad, as 0.44% and 0.126%; 0.0418% and 0.079%; 0.004% and 0.0264% respectively at 24 h.

Keywords

Spodoptera litura, Novel Insecticides, LC50 Values, Dose Mortality Response
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About The Authors

Shiwani Bhatnagar
Forest Protection Division, Arid Forest Research Institute, New Pali Raod, Jodhpur, Rajasthan
India

Arvind Kumar
Forest Protection Division, Institute of Forest Productivity, Ranchi
India

A. K. Karnatak
Department of Entomology, College of Agriculture, G. B. Pant Univ. of Agriculture and Technology, Pantnagar – 263145, U.S. Nagar, Uttarakhand
India

Yogesh Kumar
Department of Entomology, College of Agriculture, G. B. Pant Univ. of Agriculture and Technology, Pantnagar – 263145, U.S. Nagar, Uttarakhand


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  • Evaluation of Toxicity of some Novel Molecules of Insecticides against Spodoptera litura (FAB.)

Abstract Views: 482  |  PDF Views: 3

Authors

Shiwani Bhatnagar
Forest Protection Division, Arid Forest Research Institute, New Pali Raod, Jodhpur, Rajasthan, India
Arvind Kumar
Forest Protection Division, Institute of Forest Productivity, Ranchi, India
A. K. Karnatak
Department of Entomology, College of Agriculture, G. B. Pant Univ. of Agriculture and Technology, Pantnagar – 263145, U.S. Nagar, Uttarakhand, India
Yogesh Kumar
Department of Entomology, College of Agriculture, G. B. Pant Univ. of Agriculture and Technology, Pantnagar – 263145, U.S. Nagar, Uttarakhand

Abstract


An attempt was made to assess the toxicity of some novel molecules of insecticides against Spodoptera litura (Fab.). The dose mortality response to the 7 d old larvae of S. litura indicated that spinosad at 24 h was 4.773 times more toxic than cartap hydrochloride at LC50 value. By the lapse of time this ratio further increases to 82.5 at 48 h and 71 times at 72h. The relative toxicity ratio (RTR) of novel molecules at LC50 value in comparison to cartap hydrochloride at 24h and 48h were: spinosad (4.77, 9.9)> fipronil (1.59, 3) and at 72h the values were spinosad (10.14) and fipronil (2.54). LC50 values of cartap hydrochloride, fipronil, spinosad, as 0.44% and 0.126%; 0.0418% and 0.079%; 0.004% and 0.0264% respectively at 24 h.

Keywords


Spodoptera litura, Novel Insecticides, LC50 Values, Dose Mortality Response

References