Evolution of Some Bio-rational Pesticides against Third Instar Larvae of Spodoptera frugiperda
Sakshi Gehlot *
Shri Vaishnav Institute of Agriculture, Shri Vaishnav Vidhyapeeth Vishwavidyalaya, Indore-453111, Madhya Pradesh, India.
Rashmi Vishwakarma
Shri Vaishnav Institute of Agriculture, Shri Vaishnav Vidhyapeeth Vishwavidyalaya, Indore-453111, Madhya Pradesh, India.
Sundar Borkar
Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur-482004, Madhya Pradesh, India.
*Author to whom correspondence should be addressed.
Abstract
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.
Keywords: Efficacy, bio-rational pesticides, ingestion, mortality