Evolution of Some Bio-rational Pesticides against Third Instar Larvae of Spodoptera frugiperda

Aims: In the present study, to evaluate the impact of six biorational pesticides (viz., neem leaf extract, neem seed kernal extract, neem oil, Bacillus thuringiensis, novaluron 10 % EC and diflubenzuron 25 % WP) on S. frugiperda third instar larvae under laboratory conditions. Study Design: The design of the experiment was completely randomized with seven treatments replicated thrice. Place and Duration of Study: The experiment was carried out in the department of plant Protection, Shri Vishnav Institute of Agriculture, Shri Vaishnav Vidyapeeth, Indore, Madhya Pradesh. Methodology: In the experiment, third instar larvae of S. frugiperda were treated with six biorational pesticides by ingestion methods. Results: Among the biorationals, novaluron 10 % EC and diflubenzuron 25 % WP were found to be most effective as they recorded 100.00 and 90.00 % larval mortality of third instar larvae. However, the larval mortality in all the treatments increased with an increase in time. Conclusion: The study demonstrates that biorational pesticides are effective against Spodoptera frugiperda, with novaluron 10% EC being the most effective. It emphasizes the need for integrated pest management (IPM) and recommends rotating control methods to prevent over-reliance on a single strategy for sustainable pest control.