Evaluation of Adjuvants on Growth and Virulence of Metarhizium rileyi against Spodoptera litura (F.)

Authors

  • Gurmehar Kaur Grewal Department of Microbiology, Punjab Agricultural University, Ludhiana 141004, Punjab
  • Neelam Joshi Department of Microbiology, Punjab Agricultural University, Ludhiana 141004, Punjab

DOI:

https://doi.org/10.55446/IJE.2021.358

Keywords:

Spodoptera litura, Metarhizium rileyi, adjuvants, carboxy methyl cellulose, glycerol, boric acid, Tween-80, mixtures, virulence, surface coverage, biomass, mortality

Abstract

This study evaluated the effect of adjuvants viz. glycerol, boric acid, carboxy methyl cellulose (CMC) and Tween-80 on the growth of Metarhizium rileyi (Farlow) Kepler, Rehner and Humber isolates. Their virulence against Spodoptera litura (F.) larvae has also been assessed. The isolates were observed to exhibit maximum surface area coverage and biomass with glycerol @ 5% and CMC @ 0.5%. Further, NIPHM isolate of M. rileyi supplemented with mixture of adjuvants- glycerol @ 5% and CMC @ 0.5% when evaluated against S. litura larvae gave maximum mortality (63.33%) and increase over control (without adjuvants- 2.69%). This study demonstrates the possible role of adjuvants in enhancing the growth of M. rileyi and its virulence against S. litura.

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Published

2023-12-01

How to Cite

Grewal, G. K., & Joshi, N. (2023). Evaluation of Adjuvants on Growth and Virulence of <i>Metarhizium rileyi</i> against <i>Spodoptera litura</i> (F.). Indian Journal of Entomology, 85(4), 997–1000. https://doi.org/10.55446/IJE.2021.358

Issue

Volume 85, Issue 4, December 2023

Section

Research Communications
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Europe PMC

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