Phosphate solubilizing bacteria (PSB) are able to convert insoluble forms of phosphorus to an accessible form. An investigation was carried out with MDU 6 rice seeds were bioprimed with Phosphobacteria (Concentration: 10, 15 and 20 %; Duration: 6, 12, 18 and 24 h). The seeds were also hydroprimed for 6, 12, 18 and 24 h. The nonprimed seeds served as control. Biopriming with Phosphobacteria (20 % concentration for 12 h) expressed high values for all the parameters studied namely speed of germination, germination (%), root length (cm), shoot length (cm), dry matter production (g/5 seedlings) and vigour index which accounted for 26, 15, 13, 15, 16 and 27 % increase over nonprimed seed.