Two field experiments were carried out at the Experimental Farm of the Faculty of Agriculture (Saba Basha), Alexandria University, at Abees region, Alexandria. Egypt during the two growing seasons 2013 and 2014 to study the effect of bio- organicand nitrogenous fertilization on the productivity of some rice cultivars (Oryza sativa, L.).The applied experimental design was splitsplit plot with three replicates. The main plots were conducted for the three rice cultivars (Sakha 106, Sakha 104 and Giza 178), while the four nitrogen fertilizer levels (Control, 40, 60 and 80 kg N/fed), as urea for 46.5% were arranged in the sub-plots and three bio-organic (uninoculation, compost and A-Mycarrhizal) which were arranged in the sub- sub plots. The main results could be summarized as follows (1) Sakha 104 cultivar significantly surpassed the other cultivars in all yield and its components I.e. panicle weight, number of filled grains/panicle, number of panicles/m², 1000- grain weight, straw, grain and biological yields/ha as well as harvest index. (2) Application at 60 kg N/fed, gave the highest all characters under study But applying 60kg N/fed gave significantly the highest Hulling, milling and head rice percentage. (3) Application with 60 kg N/fed with A-mycorrhizal inoculation was the best combination to obtain the highest values of panicle weight, number of panicles/m², 1000- grain weight, grain and biological yield/ha and harvest index as well as milling percentage. 
 
The highest most traits except number of filled grains/panicle and straw yield were obtained from the combination of applying 60 kg N/fed and A-Mycorrhizal inoculation with sakha104 rice cultivar.