Two field trials were conducted during 1986/87 and 1987/88 seasons, at the Research and Experimental Station of the Faculty of Agriculture at Moshtohor. Each experiment included the treatment combinations of two wheat varieties (Giza 157 and Sakha 8) three seeding rates (40, 60 and 80 kg/fad..) and three N levels (0, 50 and 75 kg/fad.). Giza 157 surpassed Sakha 8 in plant height, number of tillers/rn2, spike length and grain as well as straw yield. The yeilds of grain and straw of Giza 157 overyielded those of Sakha 8 by 45 and 47%, respectively. Grain yield/fad. was not greatly influenced by seeding rate regardless the decreases in yield components characters which resulted from increasing seeding rates. Nitrogen application up to 50 kg N/fad, significantly increased studied growth characters, yield components and grain yield.. The interaction effects, AxB on number of tillers/rn2, number of grains/spike and weight of grains/spike, AxC on number of tillers/rn2, spike length, number of grains/spike and weight of grains/spike, BxC on the number of tillers/rn2 and AxBxC on number of tillers and number of spikes/rn2, spike length, spike weight, number of grains/spike, weight of 1000—grain and grain yield/fad, were significant and throughly discussed.