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 f 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 arid 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.