author(s)
M Gayathri, NC Venkateswarlu, T MuraliKrishn and TNVK Prasad

abstract
Nomuraea rileyi (Farlow) Samson is one of the cosmopolitan occurrence primarily infecting Lepidoptera and particularly the economically important, polyphagous noctuid pests. The N. rileyi grown under nano based SMAY media recorded the maximum number of conidia 8.0, 7.3, 7.2 and 6.9 per ml with MgO at 50 ppm, CaO at 20 ppm, ZnO at 20 ppm, FeO 10 ppm, whereas in control it was recorded as 1.5 per ml during the year 2016. Similarly during 2017 also the condial count was 8.6, 8.1, 7.9, 6.6 with MgO 50 ppm, CaO 20 ppm, ZnO 20 ppm and FeO 10 ppm treatments respectively. The inhibited growth with increasing nanoparticles concentration might be due to the production of reactive oxygen species (ROS), the disruption or disorganization of cell walls due to interaction of nanoparticles, including interactions with DNA and proteins and accumulation of nanoparticles in the cytoplasm or on the outer membranes.