In this work we prepared Zinc oxide nano - particles controllably by polymeric precursor method. In this approach, zinc nitrate Zn (NO3)26H20 and polyvinyl-pyrolidine were used for the preparation of ZnO nanoparticles. The microstructure of the ZnO nano particles were characterized by X-ray diffractometer and Scanning electron microscopy and the optical property was investigated by the room temperature UV-Visible spectra. Zinc oxide (ZnO), a versatile material, has been attracting attention. It has been proved as a potential agent for seed germination activity. In the application part we dealt the seed growth activity for Cicerarieitnum seeds with ZnO nanoparticles. In this we observed growth is rapid for seeds washed with ZnO nanoparticles.