Two field experiments were carried out during the summer seasons 2013and 2014at Experimental farm of Sakha Agricultural Research Station to study the physiological attributes, yield and yield components of maize as affected by bio and mineral nitrogen fertilizers. The applied experiment was designed as complete Randomized Block Design with four replications. The experiment included 10treatments:- 1- 60 kg N fed-1.+Cerealin(C). 2- 60 kg N fed-1. +Microbien (M). 3- 60 kg N fed-1.+Rizobacterien(R).4- 80 kg N fed-1. +Cerealin (C). 5- 80 kg N fed-1. +Microbien (M).6- 80 kg N fed-1.+ Rizobacterien (R). 7- 80 kg N fed-1.+ Cerealin (C). 8- 100 kg N fed-1.+ Microbien(M). 9-100 kg N fed-1.+ Rizobacterien(R). 10-120 kg N fed-1. Grain maize (hybrid S.C.128 ) were sown in 14 and 16 July in both seasons. The results revealed that, application of 100 kg N+ biofertilizers (Rizobacterien) caused a significant increase in most studied characteristics in both seasons. This will greatly benefit for farmers in area where supply of nitrogen fertilizer is low and cases where farmers cannot afford the cost of high fertilizer input reduced the use a of chemical fertilizer and reduced the harmful effect on human health.