Himachal Journal of Agricultural Research

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Bioefficacy of Newer Insecticides Against Plutella xylostella (L.) Infesting Cabbage


Affiliations
1 Department of Entomology, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur - 176062, India
 

The bioefficacy of newer insecticides against diamondback moth, Plutella xylostella (L.) on cabbage was determined. Among different treatments, the per cent reduction of larval population over untreated check was highest in chlorantraniliprole @ 10 g a.i./ha (81.02%), followed by spinosad @15 ga.i./ha (78.13%) and indoxacarb @40 ga.i./ha (78.02%). The lowest per cent reduction was found in the plots treated with Bacillus thuringiensis (45.14%) and azadirachtin (45.52%). Among different treatments highest marketable yield was recorded in chlorantraniliprole (149.92q/ha) and the lowest marketable yield was observed in azadirachtin (98.1q/ha) and Bt (98.81q/ha). Incremental cost benefit ratio was maximum (1:18.44) in chlorantraniliprole followed by spinosad (1:16.33) and diafenthiuron (1:13.96). The lowest incremental cost benefit ratio was found with novaluron (1:2.48).

Keywords

Bioefficacy, Insecticides, Biopesticides, Plutella xylostella, Cabbage.
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  • Bioefficacy of Newer Insecticides Against Plutella xylostella (L.) Infesting Cabbage

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Authors

Namburi Mounica Chowdary
Department of Entomology, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur - 176062, India
P. C. Sharma
Department of Entomology, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur - 176062, India

Abstract


The bioefficacy of newer insecticides against diamondback moth, Plutella xylostella (L.) on cabbage was determined. Among different treatments, the per cent reduction of larval population over untreated check was highest in chlorantraniliprole @ 10 g a.i./ha (81.02%), followed by spinosad @15 ga.i./ha (78.13%) and indoxacarb @40 ga.i./ha (78.02%). The lowest per cent reduction was found in the plots treated with Bacillus thuringiensis (45.14%) and azadirachtin (45.52%). Among different treatments highest marketable yield was recorded in chlorantraniliprole (149.92q/ha) and the lowest marketable yield was observed in azadirachtin (98.1q/ha) and Bt (98.81q/ha). Incremental cost benefit ratio was maximum (1:18.44) in chlorantraniliprole followed by spinosad (1:16.33) and diafenthiuron (1:13.96). The lowest incremental cost benefit ratio was found with novaluron (1:2.48).

Keywords


Bioefficacy, Insecticides, Biopesticides, Plutella xylostella, Cabbage.

References