Crop plants are usually affected by environmental stresses. Among different possible stresses, irrigation and available nitrogen supply are two of most important stresses for crop plants. Surveys of draught and nitrogen biofertilizer on yield and element of yield of && were conducted through a farm test in form split plot and in block frame. The experiment was conducted randomly with four replications in 2012. The surveys were on three levels of draught stress (control, no irrigation during stem development, no irrigation during flowering) and four level of nitrogen bio-fertilizer (control, 25%, 50%, azeto bacter + nitroxyn). The traits under consideration were yield, 1000 grain, total number of seeds in tray, total number of trays, and length of plant. The results showed significant differences of traits between draught stress samples and nitrogen bio-fertilizer stress samples. However, no significant difference was found regarding reciprocal effects. Results concerning agricultural traits showed that complete drought after stem formation negatively affected the sample. The best grain yield was obtained for ordinary irrigation sample (control group) and nitrogen bio-fertilizer of 25% and 50% with 6787 and 7215kg/ha yields.
