This study was carried out to determine the effect of the combination of three N levels (0, 40 ad 80 kg N/fad.), three P levels (0, 16 and 32 kg P205/fad.) and two —1evelg (0, 48 kg K2o/f ad.) on the yield, yield compo nents and chemical analysis of soybean, clark cultivar Nitrogen application significantly increased plant height, number of pods/plant, weight of pods/plant, lOO-geeً weight, seed yield/fad, protein yield/fad, and oil yield/fad, The maximum seed yield was obtained by applying eo kg N/fad. On the other hand N, protein and oil Contents in seeds of soybean were not significantly affected by applying N fertilizer levels. Nitrogen application Significantly decreased P% and X%. Seed yield/fad, increased significa tly by increasing phosphorus fertilizer rates up to 32 kg P205/fad, in one season only. Whereas, the yield compo nents and chemical analysis in seeds of Soybean were not Significantly affected by P or N application.