Development of reliable and eco-friendly process for synthesis of metallic nanoparticle is an important steps in the field of nanotechnology. An effort was made for biosynthesis of silver nanoparticles from Trichoderma asperallum, a potential indigenous biocontrol agents. Silver nitrate was added as precursor for the synthesis of silver nanoparticles. The biosynthesized silver nanoparticles was characterized by UV-Vis spectrophotometer, Dynamic Light Scattering (DLS), X-ray diffraction (XRD), Zeta Sizer and Transmission Electron Microscope (TEM). UV Vis spectrum of aqueous medium containing...