Development and evaluation of formulations of Lecanicillium lecanii against Myzus persicae

Abstract

Evaluation of oil and talc-based formulations of an indigenous isolate of Lecanicillium lecanii (Zimm.) Zare and Games was performed at Kittur Rani Chanamma College of Horticulture (KRCCH), Arabhavi. Different formulations of Lecanicillium lecanii were developed and tested against cabbage aphid, Myzus persicae (Sulzer) under laboratory and field conditions. Among the various formulations screened, ground nut and sesamum oil-based formulations recorded the highest mean mortality of 96.66 per cent, followed by sunflower oil (95%), coconut oil (94.15%) and mustard oil (93.33%). However, most formulations of L. lecanii developed recorded more than 81.50% mean mortality of M. persicae under laboratory conditions. Further, based on the efficacy under laboratory conditions,
the four best formulations of L. lecanii were evaluated against M. persicae under field conditions. Among the selected formulations, the maximum per cent reduction of M. persicae was recorded in sesamum oil, resulted in 15.14 and 18.60 per cent reductions over control after the first and second sprays.