Vol. 9, Issue 10, Part B (2025)

A pot culture experiment was conducted at the Biological Control Research Laboratory, ICAR Unit-9, AAU, Anand to ascertain the efficacy of different biopesticides against the assassin bug, R. marginatus. Ten days after spraying and release of second instar assassin bugs, a significantly highest mortality (83.64%) was recorded in Beauveria bassiana treatment, followed by Metarhizium anisopliae, with a mortality of 70.00 percent. The treatments Bacillus thuringiensis and Lecanicillium lecanii were found to be moderately toxic to the reduviid nymphs with mortality rates of 53.35 and 50.00 percent, respectively. Among the biopesticides tested, least cumulative mortality of 26.52 percent was recorded in treatments of Azadirachtin 1500 ppm and Azadirachtin 10000 ppm. No nymphal mortality was recorded in the untreated control.