Department of Entomology, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur - 176 062, Himachal Pradesh, India
*Corresponding author's E-mail: ksverma_hpau@rediffmail.com
Online published on 4 January, 2023.
An investigation was carried out to determine the bioefficacy of natural products and biopesticides against first and second instar larvae of T. orichalcea under laboratory conditions. Brahmastra exhibited 1.32 and 1.22 times higher toxicity based on LC50 values against first and second instar larvae of T. orichalcea than Agniastra. In case of azadirachtin the LC50 was 6.91 and 8.10 ppm against first and second instar of T. orichalcea showing 1.17 times higher toxicity against first instar larvae. Among the two entomopathogenic fungi, Beauveria bassiana showed 1.38 times higher toxicity than Metarhizium anisopliae against first instar and 1.67 times against second instar larvae of T. orichalcea.
Azadirachtin, Entomopathogenic fungi, Intrinsic toxicity, Natural products, Thysanoplusia orichalcea
