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[en] A pot experiment was carried out in greenhouse to investigate the effect Pb and Cd applied on growth, yield and the amount of fixed nitrogen by pea's plants.15N-labelled (5 % atom excess) ammonium nitrate was applied at three levels (0,20 and 40 mg N-1 kg soil). The legume pea seeds were inoculated with Rhizobium Leguminesarum. Lead was applied as lead sulfate at rates of 0, 50 and 200 mg Pb kg-1 soil, while the cadmium applied as cadmium sulfate at rates of 0, 5 and 10 mg Cd kg-1 soil. Results indicated that the highest values of Pb uptake were 540,11.55 and 552 mg-1 pot for pea shoot, pods and whole plant at the rate of 200 mg Pb kg-1 soil + 40 mg N kg-1 soil, respectively, While, the highest values of Cd-uptake were 13.90, 6.54 and 20 mg-1 pot at the rate of 10 mg Cd kg-1 + 20 mg N kg-1 soil for the same sequence. The values of Ndff and Ndfa were 43.74 and 278.2 while Ndfs recorded 164.1 mg pot-1 at rate of 5 mg Cd kg-1soil + 40 mg N kg-1 soil compared to the control.