Himachal Journal of Agricultural Research

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Feeding inhibition of natural products against Agrotis segetum (Denis and Schiffermuller)


Affiliations
1 Department of Entomology, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, India
 

The feeding inhibition (FI) of different natural products viz., Neemastra, Agniastra, Brahmastra and garlic + chilli extract was evaluated against the third and sixth instar larvae of Agrotis segetum (Denis & Schiffermuller). The concentrations tested ranged from 2 to 32 per cent. The mortality due to natural products was found to be non significant in third and sixth instar larvae but resulted in significant feeding inhibition (FI). Based on FI50 values, the order of feeding inhibition of the natural products tested against the third and sixth instar larvae was observed as Brahmastra (5.81 and 6.61%) > Neemastra (6.12 and 7.04%) > garlic + chilli extract (6.39 and 7.49%) > Agniastra (6.44 and 8.62%), respectively.

Keywords

Agrotis segetum, natural products, feeding inhibition
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  • Feeding inhibition of natural products against Agrotis segetum (Denis and Schiffermuller)

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Authors

Shiwani .
Department of Entomology, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, India
K.S. Verma
Department of Entomology, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, India
R.S. Chandel
Department of Entomology, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, India

Abstract


The feeding inhibition (FI) of different natural products viz., Neemastra, Agniastra, Brahmastra and garlic + chilli extract was evaluated against the third and sixth instar larvae of Agrotis segetum (Denis & Schiffermuller). The concentrations tested ranged from 2 to 32 per cent. The mortality due to natural products was found to be non significant in third and sixth instar larvae but resulted in significant feeding inhibition (FI). Based on FI50 values, the order of feeding inhibition of the natural products tested against the third and sixth instar larvae was observed as Brahmastra (5.81 and 6.61%) > Neemastra (6.12 and 7.04%) > garlic + chilli extract (6.39 and 7.49%) > Agniastra (6.44 and 8.62%), respectively.

Keywords


Agrotis segetum, natural products, feeding inhibition

References