Vol. 11, Special Issue 11 (2022)

Author(s):
Moirangthem Monalisa Devi and SK Mukherjee

Abstract:
Efficacy of biopesticides; Bacillus thuringiensis, Lecanicillium lecani, Beauveria bassiana, azadirachtin and synthetic insecticide, fipronil (chemical check) and the untreated control (distilled water) were studied on the morphometry and duration of 3^rd instar larvae in the subsequent generation of Chrysoperla zastrowi sillemi after first round treatment by two different methods, residue deposit and diet contamination methods under laboratory condition. In both the methods, lowest length (5.16 mm in residue deposit and 4.96 mm in diet contamination) and breadth (1.98 mm and 1.95 mm respectively in residue and diet contamination methods) were observed in fipronil treated 3^rd instar larvae of subsequent generation followed by azadirachtin. Length and breadth of all the microbial treated 3^rd instar larval stage of subsequent generation were almost at par with the untreated control. Maximum larval duration was observed in Bacillus thuringiensis (9.80 days) in residue deposit method and Lecanicillium lecani (9.85 days) in diet contamination method.